L29 454 Evap system from the charcoal canister to the evap valve (sorta a vacuum line) Fuel pressure regulator on the back of the intake manifold. I just picked up a 98 L29 Vortec 7400 long block for $160. or at least several electronic parts. 6 weeks ago when I was cruising on the highway at 60 MPH the check engine light came on. James and I disassemble the 454 down to the rotating assembl. ( 24 ) Estimated Ship Date: Today. Help please! 454 timing issue. 4 Vortec was essentially the same big block 454 that Chevrolet used to power its muscle cars, but it gained a hydraulic roller camshaft and improved cylinder heads to …. V and VI: 25 people found this article helpful what about you? Feedback. My big concern is the potential edge of the head chamber to piston dome interference. Using a CR calculator puts this cr at 9. Running a stock L29 head with 100cc chambers will put me at about 9. 2L MPI stern drive; Used on MerCruiser Inboard engines with ECM 555 and various MerCruiser 7. Voodoo Hydraulic Roller Cam - Chevrolet Big Block Mark VI 454, …. 454ci/L29: Rated at 290 hp, The Vortec 7400 is the last-generation 454, with the same 4. I was messing around with it this spring and never could get it to work like I 'Though' it should work. 454 Build and Dyno Results (600+ HP!). Eliminating vacuum lines 454 engine. breaks up like a rev limiter cause it screams to 5k but won't exceed it. 400-425-455- External AMC Gen 1 (to 1966) 250-287-327-External Gen 2 (1966-1970). In modern vehicles, the Check Engine Light will also pop on when there’s a …. 39" 3120X1440 40W Charger at Aliexpress for. ( i wouldnt run it over 5000rpm) even the less powerfull ones put out 300 hp or so factory and a bunch of torque. It is much nicer to run a late model 124 Amp alternator, stock GM mini starter and an actual reliable A/C compressor for a change. I will have to re-check with an oil squirter. I assume its because I have bigged injectors. RPO L21 was the version used in the medium duty trucks and probably has different emissions equipment. I installed a750 holley,performer rpm intake and lightning headers with very little gains. There is a diagram on top of the air filter, however, me being 90, thus being old enough to remember when engines did not require a jungle of tubing. disappointed in 454 combo. Thread starter RedBurb; Start date Dec 14, 2021; but my L29 issue is more of a faint miss or slight hesitancy during idle. 5" Single > True Duals Duals w/ Crossover > 3. Can I use the stock 1 bar MAP w/centrifugal S/C '0411 …. Both oils have lower viscosity at temperatures that measure the resistance of the oil to flow. Eliminating vacuum lines 454 engine. How To Add 70 Percent More Power to A Chevy 454 V. 3L with two narrow band sensors wired as factory, …. If you notice your vehicle idling roughly or stalling, it could point to a. Everything is stock on this truck other than the computer swap and EFI live tuning. and harness from a 02(?) full size pickup. 4L (454) from the late 1990s, with the plastic covers removed. 402 BBC filled block on alcohol. It had slightly reduced power compared to the L29 454 and used a different PCM. I have L-29 heads on a Mk IV block in my boat. I haven't had much time to spend learning and programming lately, but removing most of the torque management and adjusting a couple of timing points made a hugh diffference in performance and gas mileage, but I haven't even checked mpg yet. which prolly couldn't use anyways, whats the difference between the L21 n L29 wiring? Reactions: HotWheelsBurban and stutaeng. They're biased for low-rpm power and fuel economy. I have read nearly every thread on tbi surging idle, code 44's (lean o2), and everything in between. Gantry built and removal continues Sep 19, 2020 #17 HawkX66 Well-Known Member. Since all big blocks use the same bolt pattern, you must use an externally-balanced flywheel. Remanufactured long block engines come with 1 year / unlimited mileage warranties standard with 3 yr/50000 mile non-commercial extended warranties priced at $190 on …. 1st I put it on the full manifold vacuum port off the carter carb and I got a pretty steady low reading at 4in HG vac. 4 (7400, Regular Production Option designation L29) in North America and across other markets. 4L/454 Chevy big block Gen VI Oil Pans and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App Vehicle/Engine Search Vehicle/Engine Search Make/Model Search. 250 but the stroke increased from 4. Upgrading and building a powerful big block Chevy are where things get exciting, in our opinion at least. I pulled the pan and found a valve, some piston parts and roller lifter parts. You need cubic inches to make torque. Thread starter Scottm; Start date Sep 6, 2021; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. 4-liter 454-cubic inch V8 big block, which produced 230 horsepower. I was waiting to hear how that Blackbear box turned out as I plan on going the exact same route. 4L Remanufactured Engine K Series C Suburban 1996-2000 L29 GenVI BBC. Engine Assembly, New, Crate Engine, Chevy, V8, 7. So your 94/454 should time up by using the number 1 plug, marking the Harmonic Balancer scribe mark with a soap stone to make it easier to see. So if you have 62psi at idle, you would be flowing the equivalent amount of fuel to 72psi at full throttle. 4L Engines are designed as a stock replacement, providing the big torque you need for pulling a trailer or other heavy loads, for 1980-2000 Chevy/GMC trucks, SUVs and vans. Maintains speed and higher gears when climbing hills. 000: 290 hp (216 kW) Vortec 7400 L21: MPFI: 1998-2001. This kit offers 6lb of boost to the sometimes lethargic L29 and from what I have read it really wakes it up. A friend has a 84 thousand mile L29 454 for sale its from a 1998 Chevy pu that was totaled, its a roller cam 4 bolt main block with 10141279 heads. Using E38 ECM with LS7 tune and after bumping cranking airflow and idle airflow and bumping spark to 16 from 13, it starts and idles reasonably well at 900 rpm. the 454 is a torque motor, high low end and a bit lower rpm range. This product may not be eligible for select promotional offers. I'd like to install non EGR headers on my 1997 L29 454 K3500 crew cab. 370HP @ 4700 RPM 476 FT LBS @3400 RPM. Its basically a “330 on Roids” clone with milder cam more aggressive porting. Remanufactured: General Motors. I keep wanting to slap a set of alum brodix race rite heads, oval port 110 cc, should fit all the stock stuff. 454-502- External Balance 572- Internal Balance GEN VI L29/L21- External Balance GEN VII L18-External Balance 8. 1997 Vortec Engine Specifications. Say if I put L92 heads, a moderate cam/lifter kit to broaden the powerband, and headers all …. Ive done one on a 1998 l31 350 but they did not offer the 454 in the express van. Find many great new & used options and get the best deals for Raw Water Pump for MerCruiser 7. Schurkey Premium Member · #5 · Nov 2, 2006. The first firing order is the more popular choice for street and drag racing applications since it provides more performance and power. It has all indications of a roller. From a previous thread I found I had no injector. 4L/454 Chevy big block Gen VI Camshafts and get Free Shipping on Orders Over $109 at Summit Racing!. They use the 1/4 megabyte(257 kilobyte to be exact) 4 connectored 30-34 pin PCM known as the "BlackBox PCM. Use for stock replacement OEM original equipment. 5 ounce-inch external balance spec. First we run the engine fuel injected and then swap on a carb. (belt no 15590) Diagram 3 is for the 3rd groove on the crank. Tuning an 0411 Swapped 454 Big Block GMT400. Here is the website for setting your new/old distributor and it will go into detail about setting up the CMP offset retard. Just by mounting the L29 AC/PS bracket it to the engine, it looks like even a smaller PS diameter pulley would be really close to the steering box. Probably one of the most common problems with the 7. Verify your engine specs with a service manual for your year and model. This is for a Gen 6 454 L29 head. Mercruiser Marine Quick Strike Spark Plug Wire Set Model 7. 5 inches lower than the doner 7. Mercury Quicksilver Parts Guide. Approx 32000km I installed 3 years ago. These brand-new cylinder heads meet GM’s stringent quality standards and provide excellent service and durability not found in used …. 4L/454 Chevy big block Gen VI Camshafts. 4L/454 Engine Oil Dipsticks Passenger side Oil Dipstick Location and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App. I'm not looking for a race motor. We're guessing that didn't help performance on the old Vortec 454. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search. For GM vehicles, the Vortec variant increased power by 60 horses. I assume when you say a late 90's 7400 454 Chevy engine you are talking about the VORTEC MPFI engine used from about 1996 to 1999. Franksmith said: I am preparing for the worst if I pull my heads to fit a coolant usage issue and one of them is cracked. 454; Engine Configuration*: OE Direct Replacement Engine; Crank Flange Bolt Count*: 6 Bolt. Vortec L29 Heads 99cc chamber volume (small ovals) Further Head specs-. 4L/454 Chevy big block Mark IV Harmonic Balancers and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App Vehicle/Engine Search Vehicle/Engine Search Make/Model Search. 2001 GMC 2500HD SLT CC SWB 4x4,8100 allison,3. 1968 GMC 3 door Suburban C10 454 4L80E EFI All for sale. Specs below, tune file and log attached that so far is just Injector data, RPM, idle base flow upped 20% and idle timing increased a little. when it was newer it would get 14. I tried it in a vacuum port and it doesn't get in evenly at all, it pools up somewhere and can hold nearly 1/2 gallon before you can actually start to get it in the chambers (I tried. The lower manifold's torque spec is 30 ft. ( 11 ) Estimated Ship Date: Oct 16, 2023 (if ordered today) $78. Included with this harness is an 8 circuit modular fuse block and GM color coded wires with labels for easy installation. 7 L 5700 L31 engine, which was produced from 1996 to 2002. UltraPower GM / Workhorse 7. I know the easiest thing to do would be to add one of those toolbox style fuel cells in the bed and that. That would mean that it rotates clockwise. Hi all, Wanted to ask some very basic questions. 68/1 gearbox on the back and this one is going to be direct drive so the engine will not be operated above 3200 RPM ever. 454 L29 Specs: Gas-STD (L29) 454 CID (7. Main Cap Bolt (396-454, 4-Bolt, Inner and Outer) 110 ft. 4 Vortec Performance Upgrades Guide. 4L/454 Engine Oil Dipsticks. With the 454, putting in Vortec 350 code and chaning the displacement and enter in the tables/constants/switches appropriate to the 454 is all that is needed. To ease up your suffering we have laid down the best 5 spark plugs for big. In this video James takes us through the motor build from short block all the way to long block. Schurkey Premium Member · #2 · Jul 25, 2012. Fresh from the wrecking yard, the L29 454 was upgraded with a new, carbureted induction system and mild Comp cam. New FPF Fuel Pressure Regulator Kit For Mercury Mariner MerCruiser Engine. All new fuel injection harness with OEM fitment. I ported cylinders 1 & 3 and left 5 & 7 stock and flowed them all. 73 12 bolt, 700R4, 12" discs front 10" rear. Howards CL120235-12 hydraulic roller cam and roller lifters kit. 19" intake valves, I bought the stock length. I'm going to be building an L29 454 (96-00). Introduced in 1996, it was produced for five years, until . These can be identified by drilled holes near the outside edge of the flywheel. yellowbulletdotcom Discussion starter · Aug 14, 2016. 454 Gen VI rebuild, several questions. The factory zz502 hydraulic roller camshaft sounds great! Thanks. By N0DIH in forum RoadRunner Real-Time PCM Emulator Replies: 10 Last Post: January 22nd, 2013, 11:49 AM. For my vehicle I took the following Data and trying to judge whether this is within specifications. Introduced in 1996, it was produced for five years until being replaced by the Vortec 8100. Man, how freakin weirded out I've become over craving a silky smooth …. The BenchForce™ PowerBlock uses EFI# 100-01072. I really doubt there is anyone out there sell a harness for this engine meant for the 0411. 4L/454 Chevy big block Gen VI Rocker Arms Roller tip Rocker Arm Style and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App. Or, the 454 factory lower engine mounts are actually different compared to a 5. The L29 heads were designed to provide torque throughout the RPM range but are not high performance heads. 4:1, and it uses sequential multi-port fuel injection. The exhaust port is excellent--among the best of the GM ports. Edelbrock Pro-Flo 4 EFI System for Big-Block Chevy Oval Port engines. The same cam with more lift, a tighter LSA, and straight up or advanced would be noticeably improved. Thread starter Scottm; The cavernous L29 intake manifold will heat the intake charge to full engine temp no matter what. always torque bolts in three equal increments. 4L Remanufactured Engine K Series C Suburban 1996. Stock ECU Tune on 1999 L29 454. Complete Engines for Chevrolet C3500 for sale. The 454 "tall deck" is a good motor, 1999 K2500 Burb rocks, most if not all suspension parts and torsen bars are K3500 fitment too. The Vortec L29 L30 L31 L35 ECM does not communicate with CAN bus, so it can be programmed on the benchtop with a direct connection to the BenchForce™ …. 4 L L29 was based on the 454 cubic inch V-8 engine. This bolt pattern would accept either an 11 OR a 12in pressure plate/disc. 4L/454 Cylinder Heads Cast iron Cylinder Head Material and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App. Mercruiser 454 Magnum MPI vs Mercruiser L29 454 Engine’s. So I'm building another airboat and going a different direction on this one. I thought it would be badass to tow my Jeep with a Jeep. If you are looking for spark plugs for Chevy 454, this list can also be helpful for you. 4L/454 Intake Manifold and Carburetor Combos and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App Vehicle/Engine Search Vehicle/Engine Search Make/Model Search. com and look up an intake for the year/make/model of the engine. '73 LS4 454 Aluminum Head Choice?. 4L/L29 cylinder heads being the "hot tip" for big-blocks the same way the 5. RISER KIT, Exhaust (6 Inches) (1 required per assembly) (6 IN. Chevrolet Performance Big Block Chevy L29 Vortec Cast Iron Cylinder Head. 4L/454 Engine Oil Dipsticks Dipstick Tube Included and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App Vehicle/Engine Search Vehicle/Engine Search Make/Model Search. building a 454 to tow with. Up for sale is Volvo Penta / MerCruiser Magnum Block Casting 10237297 L29 Gen 6 , 7. Engine swapping a 454 Vortec and keeping the factory TBI. Its design shared much with the L29 454, but with the addition of forged pistons and crankshaft, and coil near plug ignition. 4L Engines are designed as a stock replacement, providing the big torque you need for pulling a trailer or other heavy loads, for 1980-2000 …. SET UPGRADE Fuel Injectors (8) For 1996-2000 7. 4L/454 Chevy big block Gen V Intake Manifolds, Carbureted. Hello folks! I previously posted about building a "TQ" focused engine for my truck so that I could use it to tow my race jeep. 4L/454 Engine Rebuild Kits. TBI L19 454 230 hp @ 3600 385 lb/ft torque @ 1600 rpm. 4L/454 Headers and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App Vehicle/Engine Search Vehicle/Engine Search Make/Model Search. That is half of your problem; the other half is a lack of a rear gear. This might be a touch low since piston friction will be less with the 454's shorter 4. I have new to the tuning world, but I have been a mechanic (more on the diesel side) for many years. Run in normally aspirated trim, the carbureted 454 produced 428 hp and 504 lb-ft of torque. 454 loading up and pulsing at higher RPM's due to faulty TPS. i upgraded the injectors on my 1999 GMC 7. Generation 6 (L29) - one-year unlimited hours warranty. I would like to build a 496 with an extrude honed factory L29 manifold and put it in a 454 SS clone but a 96+. The injectors and fuel rails are mounted in the center of the manifold. MC-20-93320A3 - 3 Inch MerCruiser Exhaust Riser Spacer Blocks [ More info ] $349. 4 GSI) produces 405 at the crankshaft and 385 at the prop, just like the Merc The TBI L29 was 310 at the prop The MPI LX with oval port heads was 320 to 330 at the prop. Help me identify mystery connectors. Thank you for choosing Chevrolet Performance Parts as your high performance source. Get the best deals on Mercruiser 454 Complete Inboard Gas Engines when you shop the largest online selection at eBay. Driving from Salt Lake to Denver yesterday it was triple digit hot and my ole Suburban didn’t fare well…. 2000 k3500 l29 454, nv4500. Searching for the right spark plugs can be a painful chore. 4L 454 CID Chevy Performance Truck Crate Engine. 4L/454 Head Gaskets and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App Vehicle/Engine Search Vehicle/Engine Search Make/Model Search. The scan tool needs to have a set procedure program in it. Hey what can i do to give me about 500 H. Check the back of the intake manifold base for blown out sealant near the distributor for wet oil. I dropped L29 heads onto the 454 in my boat. 65@125mph 406 with home ported Dart 215 heads. BBC 454 Rotating Assembly, Scat 9000 Cast Crankshaft 4. Q: My hot rodded Chevy El Camino is powered by a 454, bored. This block is used in the ZZ427, the 454 HO, and the ZZ454 crate engines offered by GMPP. First let's cover the "basics" in terms of the possible causes of engine surging/hunting, where engine speed suddenly (or slowly) changes. Chevy Performance 454ci L19/L29 Truck Crate Engine. Odd though, that the 454 with the same came peak power comes in at 400 rpm less. The hard part is to get a good look at the timing mark bracket mounted on the timing chain cover because of the shroud! The setting should be 4deg. Maybe a good torque manifold, yet not too small to allow for some top end power. Since even mild performance cams stretch the valve-lift. Plus the added cost of conversion motor mounts and exhaust to clear the frame rails adds up. I asked for a photo of the motor, and to me it looks like a L29 Mercruiser 7. I don’t know much about this block I know a lot more about the mark iv 454 so I have a few questions. To set it you need to have a scan tool hooked up to the diagnostic connector. These Chevrolet Performance 454ci/7. 8 inches) BBC, and like all of the 454 engines built since 1974 it is a light truck motor. I plan on making this a top to bottom build, making a 496 stroker. The Chevrolet 454-cubic-inch, or 7. Headers, Super Comp, Engine Swap, Long Tube, Steel, Painted, Buick, Chevy, Oldsmobile, Pontiac, 396-454. Bumps compression on an L19 shortblock to around 9. 4 (L29) engine in my sea ray that I've been having issues with. 4 454 GM L29 Gen 6 Marine , 4 Bolt Main , Short Block 96 + 1996 -2012 . This thing seems like it should make big power with the right cam and intake. 454 TBI in a 1987 R30 CC Dually. Hello All, Assuming a late 70s flat top 454 with a little CR increase to 8. 5x4-inch bore and stroke as before. 2000 L29 454 Whipple Supercharger Tune. 4L/454 Chevy big block Gen VI Crate Engines. L29 454 coil on plug conversion. hi guys, am just wondering if a 454 with about 490hp at the flywheel with a stock rotating assembly (cast crank, standard rods, standard rod bolts) with speed pro hyper pistons (33cc dome with a 19 top and 21 bottom ring end gap) will take a 100hp shot ? i know the crank will hold in. I'll start with this first connector. A friend of mine has a late 90's 2500 Silverado extra cab 4wheel drive with the Vortec 7400 454. Our Chevy 454 Long Block Engine is on sale. Trick Flow® 350 HP Super 23® Top-End Engine Kits for Small Block Chevrolet TFS-K314-350-400. 5w30 engine oils will, therefore, be able to protect the inner components of the engine faster than the 10w30 due to its low viscosity. 4L, It would be interesting to see the difference between truck and Suburban. Howards 94580 solid aluminum thrust button. I'd like to post a photo, but I'm a newbie and not allowed. Many, many vacuum lines disconnected. As soon as I got mine up above 9:1, all those problems went away. by Alan Roehrich » Mon Nov 07, 2011 5:00 am. Estimated Ship Date: Nov 14, 2023 (if ordered today) …. 4L/454 Chevy big block Gen VI Engine Rotating Kits Forged 5140 steel Connecting Rod Material and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App. 2500-6000 so coupled with the hollow forged pistons with valve reliefs cut in them, along with a GM forged 454 crank, and GM 454 rods, it should make for a pretty stout 468. I have rebuilt many chevy engines in my ten year career as a mechanic, but I cannot figure out what is going on with this one. This product cannot be ordered at this time. 4L/454 Chevy big block Gen VI Fuel Injection Systems. 4-liter, V-8 engine was a brawny gas-guzzling powerplant that should have died an ignoble death after the 1973 fuel crisis. Need new cam/lifters for a 1996 C3500 Chevy truck that pulls 20,000-24000 pounds. 7 vortec 4x4, replaced fuel injectors at 140,000. A Gen VI L29 Vortec head is a big improvement over the 156 casting. if under 500hp they will probably work fine if rebuilt. It was utilized in both performance automobiles and trucks, as well as maritime and industrial applications in various combinations. If a high rpm, high HP 454 is desired, then the 454 Vortec is the wrong motor. The timing is computer controlled. 4L GM Remanufactured Marine Engines. It is also a newer pcm than the vortec pcm, more memory faster process speeds etc. This difference in injector size was the reason why dry nitrous kit manufacturers had 150 hp kits for the 98 and 01-02 F-Bodies and only 125 hp kits for the 99-00 cars. 4L/454 Engine Rebuild Kits and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App Vehicle/Engine Search Vehicle/Engine Search Make/Model Search. 4 Vortec Ultimate Engine Guide. 78 Silverado Big 10 w/factory 454. Timing Cover, 1-Piece, Aluminum, Polished, Gaskets, Bolts, Washers, Timing Pointer, Chevy, Small Block, Kit. Results 1 - 25 of 247 25 Records Per Page Default Sort. Please view the application guide below. Should be the same as any Mk IV head. Chevrolet Silverado (GMT800) The fourth generation of the C/K series is a range of trucks that was manufactured by General Motors. 4l TBI at the best online prices at eBay! Free shipping for many products!. 2 L 502 ci is a spinoff of that motor and used throughout the boat and hotrod industries. Click on engine below for more information: Year: Rotation: Description: Price: Gen 4: Standard LH Rotation: 2 Piece Rear Main Seal : Gen 4: Standard LH Rotation: Magnum 2-Pc Seal. Checked firing order, changed plugs, wires etc. They had coils over the plugs like the later 8. L29 454 coil on plug conversion. I agree, the factory L21/L29 cam is puny, more like the specs of the TPI 305 cam! Toss in a ZZ502 cam and go have a ball. Thread starter phatphuck; Start date Oct 9, 2020; Looking for better towing in my 96 DRW CCLB L29. Like the Gen V, all engines feature four-bolt mains. I can say a friend of mine has a V10 Excursion and compared to my 454, low end, I can move out and GO far faster than he can. ATI Super Damper Standard Harmonic Balancers 917740. 7 truckthe new motor in my truck sits about 1. 5:1, much better ports, they're not the heads to use for a 7000RPM motor but for street heads they're decent and hard to pass up for the money. VI L29 Vortec engine with hydraulic roller. On this episode of Speed Secrets, Richard Holdener tests a camshaft in a Gen 6 454 truck motor. I have my records from doing a compression test on the same motor about 10 years ago, and the same cylinder had the same high reading. I plan on putting it into a 63 GMC 1/2 ton shortbed. I am in need of a little advice to perfect some things after a ZZ502 cam swap. It is controlled by the computer and idle speed is determined by engine temperature. 250 inch stroke Scat forged crankshaft. I've been reading up on the forum about the MPFI Spider conversion and have some questions specific to the L29. I just want to make it reliable easy to fix on the road so I found someone who will tune the stock ECU for me and was trying to see if any one has used this business or know of someone that help me …. Both oif these engine models are easy to recognize by the large “Bread Box” style intake plenum mounted directly on top of the engine. Most of the time the TPS is not the issue but sometimes it can be. The engine was designed for power and was a monster gas eater that got 15 mpg at best. Available to Order: Usually ships within 10 days. Additional Vehicle Information. Vortec GEN VI L29 454 Big Block swap people need advice. All the Vettes in 01-02 uses the larger LS6 injectors which are 3. The intake manifold is now laying flat on the workbench awaiting tomorrow's cleaning and new intake gaskets. 1994-95 454 TBIs ran a higher fuel pressure (30+ psi) than the earlier ones (13 psi), they had smaller injectors to work with the higher pressure. I'm not too sure I can give a good description of performance, since I'm running the carb from my old small block. These arent really peanut ports. To keep it easy you could simply dial in couple deg more timing going from 16/36 to 18/38 and if the motor responds well to the aditonal timing …. USED 1999 CHEVY C3500HD LIFTOUT 454 ENGINE ASSEMBLY 7. → Fuel Injector 802632T - MPI - For 7. 500" or less lift to work with the nonadjustable valvetrain. Performer 454-O cylinder heads have the same outstanding features as the Performer RPM heads but with an exhaust crossover passage for a 50-state emissions legal status. I've been researching all the other build plans and results already to get me started. 5 -1 maybe 9-1, via either small chamber 366 heads or '96 up vortec truck heads. 4 when towing a trailer, power wise. 4L/454 ATI Performance Products Harmonic Balancers. More power and mpg for a Gen VI 454?. anyone have any experiance camming one of these??,. As I see it I have several options. This item: SET 8 Fuel Injectors For GM 454cid 7. 4L MPI (L29) MerCruiser Stern Drive and Inboard Engines View Larger Image Fuel Injector 802632T - MPI - For 7. Wrong! It is totally possible that there is a balance mismatch if your flywheel was just bolted on without the entire rotating assembly being balanced together. 4L/454 Chevy big block Mark IV Rocker Arms and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App Vehicle/Engine Search Vehicle/Engine Search Make/Model Search. "Later, a fuel system and computer controls can be added for the full swap. There are three important considerations when choosing valve springs: Matching …. Lidstrom Discussion starter · Apr 14, 2016. Flat-top (with big bevel around the edge) pickup truck nothing-to-one pistons. The date code on the back of the block is ( B 23 6 ) The confusion continues with 4 bolt mains, composite 6 bolt timing cover, and a FLAT tappet cam. The background; Engine is a Vortec 7400 L29, which I pulled out of a '99 Suburban because of a low oil-pressure problem. But most of the time I get around 14 degrees timing at best on the stock timing map. Take the clam shell mounts off the small block and bolt on the big block. Maybe someone can port them so they make power. Degree so far has been 6-8, so I was shooting for 7 and road. I have been looking at the comp cams xr270hr-13. Chevrolet Big Block Remanufactured Engines. Mercruiser 454 Complete Inboard Gas Engines for sale. FIVEO highly recommends also replacing the fuel filter—Add a K&N Fuel Filter now and we’ll ship with your injectors. The 454 in the car is out of a Vette, unknown Cam but it’s not stock. Stock replacement valve for Gen-V and Gen-VI 454 and 502 HO engines; 12366986. i was planning on getting black bear performance to send me a tuned 411 pcm. Comp Cams XR264HR-13 towing cam. Thread starter my99bigblockL29; Start date Nov 13, 2022; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. Gonna have to use the 454's accessories as well, in less you can find an older big block and take the p/s pump. 7 vortec engine, and it also used the 0411 pcm. COMPLETE longblock buildup of the L29 Gen VI 454. 454 Chevy Big Block Build. VI) GM 454 V-8 > 0L085400 - 0M024999 Find Your Engine Drill down to the horsepower, liters or outdrive model, serial number range and component section to get an online inventory of original and aftermarket Mercruiser boat parts. My 2000 C2500 is an L29 Vortec 7. So like many others, I've been watching the Richard Holdener videos on youtube. I would like to know what modifications are needed to help make even more horsepower and torque. You can get a part that replaces the distributer but still allows the oil pump to be driven by the oil pump. HP525 SC (carb) UA1996-1999, 6UA start of Gen VI, (356)GM V8 454 cid L29 with Roller and Inboard Models (GM multi-port, 4 bolt mains, LH rotation). 87 88 Chevy Big Block 454 Fuel Injection Throttle Body Adapter 10045799. L29 454 Tune and scan "stock" I just tried this today, figured out another issue with the truck. Future availability is unknown. Mercruiser 454 Magnum MPI Models. 1-91605 Scat BBC 496 Stroker Kit, Rotating Assembly, 9. New cam, headers and a Vortech Superchargers ! Just needs tuning! | supercharger. 496 exhaust & a performer manifold on a Gen V 454 & went from a 21P 3 blade to a 23P Rev 4. How to Resurrect a Dead Big-Block Chevy Vortec 454 (L29) Engine Trying to Revive a Chevy Vortec 454 See all 12 photos Click to Unmute 00:01 / 00:37 Verne Simons Author Dec 9, 2019 Bad ideas?. Remanufactured long block engines come with 1 year / unlimited mileage warranties standard with 3 yr/50000 mile non-commercial extended warranties priced at $190 on engines priced under $2000, $290 if under $3000, etc. The later GEN V and VI big-block 454 engines (your engine) used a one-piece rear main seal and required the offset weight of 42. It had 410 torque at 3,200 rpm. Ultimate Guide to Building Chevy. Revise Search: All Models > 454 Mag. important_devices: Order online, get free downloads* Fast Trackable Insured Shipping. Oil Pan Gasket, 1-Piece, Rubber/Steel Core, Chevy, 7. Google GM L21 _____ 06 Hurricane 34FT WH W20 Chassis 8. This engine series was utilized on Chevrolet and GMC large truck models such as. Stock the heads didn't have enough valve spring height even without shims and with the rotators. I removed the fuel, cool system, checked everything replaced the fuel pressure regulator, because the. The flywheel (FROM THE FACTORY) that was installed behind a 454, was 14in diameter with 168 teeth. Like the Gen V, all engines feature four …. Note: This engine has a core charge of $500. Second what kind of power can the stock rotating assembly. Best of all, the word has gotten out and folks all over. Also known as the Vortec 7400 (7. I also bought and installed rotator eliminators. You also have the option of changing the effective gear ratio by changing the tires. 454, P/U engines heads to the old 454 PP P/U engines heads and there was no comparison due to the 100 cc heart-shaped, fast-burn chambers of the L-29 head vs the something like 113 …. So, to use this supercharger, I have to use the factory intake, which includes the lower intake manifold. I'm running a '96 Vintage L29 in my Chevelle. I am wondering if anyone has put a small turbo on their L29 454. If you change the valve springs, you'll want to ditch the valve rotators. Screw-In Rocker Arm Studs: 50 ft. I would expect the fan blade to spin when pushed by hand even if hot (don't think you could get it hot enough to lock up in the driveway). How to Make a Chevy 454 Vortec More Efficient. Free shipping on many items GM 454/7. Stock 454 cam isn't bad, I think it was 208/208. 060" Fiber Intake Manifold Gasket Set, 1. L29 454 Improving Airflow. 4 MPI has a 2 bolt block, cast crank, 3/8 rods, cast pistons, peanut oval port heads with smaller valves,etc. 4L/454 Chevrolet Performance Crate Engines. bone stock,other than headers and sidepipes along with 3. The stock Vortec springs are designed to control a very mild stock cam. Mailbag: Tips for Supercharging a 454 Engine. I measured the combustion chambers at 100cc. L29 454 Intake Manifold Gaskets. One challenge with the L29 Vortec 454 heads is getting the compression up to the 11:1 range we've been discussing. The engine was completely rebuilt (by me done right) the only aftermarket part is replacement injectors from 5. what spark plugs for L29 vortec heads?. The truck has 325K on it and it seems that the engine finally gave up the ghost. liquidbacon said: Hello BBC experts, and thanks for your help! I have a gen 6 454 in my truck. Engine is zero miles with a 2 year unlimited mile warranty. Man I'm really sorry to hear that. Truck is breaking up under load l29 454 whipple charged. Information and engine specs for the Chevrolet 454 V8 Engine. Reviewed in the United States on July 6, 2019. My K2500 Suburban is powered by a vortec big block, aka 7. eabride Discussion starter · Jun 29, 2010. I'm not trying steal a tune I just need a starting point. Crate Engine, Long Block, Chevy 454 Stroker, SBC Crate Motor, New Block and Cylinder Heads, Roller Cam, 563HP Part Number: MLL-PS4541CT 5. I figured it would be a great donor truck for my crew. I was able to identify that unique looking intake manifold and the exhaust risers which look JUST like the stock 7. The L21 was paired with the early 4-speed Allison automatic transmission or manual transmission, … See more. Joined Sep 5, 2010 Messages 7,357 Reaction score 7,633 Location The 26th State. Gmc Chevy 2500 3500 Vortec 454 Big Block L29 7. Two sets (16 pieces) of valve rotator eliminator shims will be needed. 18085 Views 5 Replies 3 Participants Last post by 65skyturbo , Apr 15, 2013. When the gang at COMP Cams decided to swap the camshaft in a 454-cubic-inch V8 L29 L. I have spent more time wrenching on it than I have driving it. Just keep it stock, stock tires and keep with maintenance clean the egr vavle, run some seafoam through the intake to clean some of the carbon buildup out thats restricting flow, keep tires at right psi, ect. It ran good for 2 pulls then I blew a head gasket. The Vortec 7400 (RPO L21) was a Commercial version of the Chevrolet Big-Block engine used in the Medium Duty truck platform and Workhorse Custom Chassis. No gasket matching, all the gaskets I have are huge compared to these ports. The idle air control (IAC) valve or actuator controls the idle speed of fuel injected vehicles. I'm not sure how much timing could be added across. And put in a different cam to get the 454 firing order. Guys out there with dyno proven. 4L/454 Chevy big block Gen VI Engine Rotating Kits. -Use blue loctite, or pipe dope, to seal the intake manifold bolts when you tighten them down. 2L MPI MIE 377/ V-8 Delco - HEI 2002 - 2004 0M300000 - …. I'm hoping that's enough to get started on the cold start. The L29 longblock utilizes a 1 piece rear main seal, roller camshaft, and oval port heads. 4L/454 Rocker Arms Self-locking Rocker Arm Nut Style and get Free Shipping on Orders Over $109 at Summit Racing! $5 Off Your $100 Mobile App Purchase - Get the App. 280 inches) compared with our 4. 5-2 hours then it won’t have much power. Gen 5 454 swap to 1996 L29 454 7. 4L Remanufactured Engine K Series C Suburban 1996 ">Chevy 454 7. The 4L80e early Valvebody is not compatible with the late model. As good as the $500 454 is, the stock L29 truck motor (circa 1999) was originally rated at 290 hp and 410 lb-ft of torque. Follow my Instagram: dieseldog_1988Tags: 454 SS, c1500, big block, TBI, vlog, ignition timing, obs Ch. A 496 and "only" 500 horsies would mean you …. mine will be used for hauling a camper and a quad around and possibly a toy hauler later down the road. There aren't that many vacuum lines. The 454 is thirsty and I'm trying to extend the driving range and add some more weight in the back. 19" valves and the stock flat top pistons? I know the valve relief is small on those flat tops, but I figured that the cam is pretty small, too. In this article, we'll discuss engine idle issues, surging and "hunting" problems. It wasn't the best moment to put out a big cubic inch big. Oct 25, 2019 #4 AllDodge said:. The fix is to strip out all both harnesses and reinstall properly. 1 L or 496 ci that is, in my opinion, one of the best motors GM ever made. I have a 69 El Camino that im thinking about upgrading to a big block. It is important to note that the BBC 454 firing order should be checked regularly to ensure that the engine is running correctly. I have put together a Vortec 454 with some aftermarket goodies. 4 L (454 cid) V8 was a truck version of the engine. Before the motor was pulled it would stall when put into gear every once in a while, never threw codes, ran perfect other than the stalling. 0L LQ4 I think Then add in fuel economy. I just had a rebuild done on my L29 engine and had a mild towing cam installed and was told that I would need to have a tune put on it. Results 1 - 25 of 549 25 Records Per Page Default Sort. That last number, the rpm of the torque peak, is the key to towing. The $500 Question: Budget Boosted Big Block. VI GM 454 V-8 1998-2000 > 0L002006 - 0L674613 > Senders & Harness Bracket. It just barely scuffs the subframe. The lack of valve reliefs in the pistons minimizes available piston-to-valve clearance. The 7400 Vortec V-8 GM engine has 454-cubic inches and was rated at 290 horsepower at 4,000 rpm. The king of the Vortec small block engines during 1997 was the 5. duration intake-270 exhaust-276. We take the Vortec big-block from this 1996 Chevy truck. I have a 1996 Itasca Suncruiser with a 85 gal gas tank and a L29 454 will this fit my gas tank and meet the fuel flow specs? Fuel Pump Kit - VIN J Eng Code L29 ( Support) I purchased this pump 25178145 for my 99 P32. 454SS (91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system) Vortec L29 454 290 hp 410 lb/ft …. L29 454 Build for '63 K15 with NV4500. Randy 67EC Lifetime Premium · #10 · Sep 8, 2017. There are three important considerations when choosing valve springs:. I also checked all ignition related. 4L 454 cid Big Block V8 Marine …. Changing the tires from say 33" diameter to a set of 28" diameter tires. dominator scott Premium Member · #16 · Aug 30, 2002. ( Joe Soares, 05/16/2021) We can accommodate your requests for the oxygen sensors, speedometer adjustment and increased HP/TQ. The ECM won't even be aware that the sensor has changed. However after the 1990's rolled around the 8. ( 3 ) Estimated Ship Date: Nov 14, 2023 if ordered today. Have just installed new taylor plug wires and installed a new GM HEI, have newer NGK UR4 plugs and a holley 80508s 750 with vac secondaries. 007dragracer · #7 · Mar 5, 2019. The L29 is the best of both worlds. 00-inch stroke, so 550 hp isn't out of the question even with your Edelbrock RPM dual-plane, since that's what. There is a lot of knowledge about these engines and tons of aftermarket upgrades and solutions for existing issues. It had slightly reduced power …. Vortec 7400 (L29) The Vortec 7400 L29 7. Part Number: ESP-445442526385 3. Upon Light Acceleration - 53 - 55 psi. 4 Vortec was essentially the same big block 454 that Chevrolet used to power its muscle cars, but it gained a hydraulic roller camshaft and improved cylinder heads to make it considerably more efficient than the old. 68Chevele · #13 · Jan 29, 2023. Includes necessary heat shielding. Im not looking for a race motor, just a strong …. Stock BBC valve lengths are: Intake 5. Included with this harness is an 8 …. Looking for better towing in my 96 DRW CCLB L29. From what I can tell the engine is running very lean and it is pulling tons of timing in certain kpa regions. Its stock with LS7 intake/injectors. Buy Global Version HuaWei Mate 20 Pro LYA-L29 Cell Phone Kirin 980 6GB RAM 128GB ROM 40. Block Chevrolet Engine Crankshaft Specifications">Big Block Chevrolet Engine Crankshaft Specifications. The 454 HO is not suitable for RV/HD use for many reasons, But the most glaring reason is the rectangular port heads will not match the oval port intake that's installed on L29 454's. 2nd I connectinted directly to a port off of the intake manifold and got a higher reading at. The lack of valve reliefs in the pistons minimizes available piston-to …. !/2" pipe thread is actually tapered from 27/32" up to about 13/16". Vans in 2000 got only BB PCM's, 2001, they got BB or 0411. 1L 132K, Steersafe, Koni Shocks, DIY Trac Bar, Tri-Metric 2025RV Battery Monitor, 4-6V Batteries, Scan Gauge 2,. I am looking to find out what the fuel pressure specifications are for a Sequential Port Fuel Injected 454. For 1980-2000 Chevy/GMC trucks, SUVs and vans with a VIN build code of L19, L29 or LE8. You can see that cam swap video here. Well, I don't own a Chevelle guys, but this is probably the best Chevy forum site out there, and I do own a '90 454SS truck and have a lot of cam questions with the following engine-. L29?">What is the difference between a BBC L21 and L29?. Since the engine didn't run on its own, the next step was to make sure it was getting. Hell, I have an Edelbrock carbureted intake on a 454HO with L29 heads. The 2002 express van was still using the 5. So I have to figure out how to get it in the engine evenly, this intake is HARD to work with. 454 engine oil type: It is a large engine, adequate for water-sports towing, and is generally used in larger runabouts and cruisers. 4L 454 cid Big Block V8 Marine Engines. The Gen V motors got the less powerful throttle-body injection, while Gen VI L29 454 received a long-runner, multi-port fuel injection system. 1 Rated, External Balance, Carbon Steel, Black Paint, Chevrolet 454, Each. 4 MerCruiser Generation #6 Replacement Premium Engine MPI L29. It is located in the vicinity of the maf, intake temp, and retractable flashlight in the engine. The results: 567 horsepower and 537 pound-feet of torque on 89-octane pump gas! That represents a 70-percent increase in horsepower. Here is the stock L29 Timing Map (the second map below is the PE mode (aka, Powervalve open timing adder to the main table). I recently purchased a 1996 Suburban Vortec 454 that has had nothing but issues. The Vortec 7400 L29 454 cu in was a truck version of the Chevrolet Big-Block engine. First I should ask what kind of powers this block capable of handling. Symptoms of a Bad or Failing Engine Control Module (ECM). I recently was able to purchase a 1998 OBS that was straight axle converted and had the l29 454, 4l80e combo. I was looking for information on the use of single bank fuel control. Advanced Search Cancel Login / Join. Part of the problem was a backfire thst was persistent and low power. These engines were rated about 275-290 HP and about 390-410lb/ft. The Big Block 454 is also interconnectedly used for the Chevy 454 engine. 5:1 flat top pistons, World Merlin oval port heads, a Mallory Unilite distributor with a HyFire 6AL box, a COMP Cams Magnum hydraulic cam, and …. Well, might be easier to have a 454 thread to cover gasser mods, as the 8100 is so vastly different, even though it is still a Mark VI (Gen VI) BBC. Remember I'm new to tuning but have done SCCA Club racing. Since the engine didn't run on its own, the next step …. The supercharger is very clean. Hello, on my 1992 454 motorhome, when i turn the key to on position the fuel pressure builds up to about 12 psi, I can hear the pump coming on then after two seconds roughly the pump turns off and the pressure drops back own to zero. PN 19170540 shares the same traits as the PN 19170538 block, but has siamesed 4. It is a 454 that appears to be a L29 but has coil on plug and is called the L21. But now she won't even fire, much less misfire. Smaller SC pulley, SLP cold air box, TB spacer 68 El Camino 350, B&M TH350, 12 bolt posi 3. This is a really old thread, but yes you can do it but you need to use the conversion head gaskets and may need to drill the Mark IV block not to have cooling issues. BBC 454 Rotating Assemblies. L29’s had multiport sequential fuel injection, all of the latest sealing technology to. L29 454 cam swap stock injection. I haven't had much time to spend learning and programming lately, but removing most of the torque management and adjusting a couple of timing points made a hugh diffference in performance and gas mileage, but I haven't …. 4L/454 Chevy big block Mark IV Piston Rings 0. Thread starter Scottm; Start date Sep 6, 2021; The L29 mani is a huge aluminum box, being heated by oil on the underside and by hot air under the hood. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Make/Engine Search Departments; Brands; Savings Central. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. intended to be a high-mileage commercial truck motor. 2000 GMC C3500 2WD PICKUP (7. Adding a pair of Borg 475 turbos to the mix plus an air-to-water intercooler upped the power ante considerably. Engine Build 454 Gen VI (bored. Chevrolet Mark-IV; GM Gen-V/VI Big Block V8. I replaced the plugs and coil and rewired it, now it won't fire off. The temp sender that is shown in the parts catalog should fit. Looking for some help with this truck. 4L 2WD DRW with the 4L80 and 4:10 gears. 2L 502 Cu In Big Block V8 was introduced. Anyone know if there is any street performance potential …. L-29 454 Free!!! I was given a L-29 454, my friend was using the motor on a irrigation pump and it quit working, he gave me the motor.