I just ordered an ECM for my 7.4 and was curious on if you guys did this tuning on the 5.7s? Some differences are: 1. We can also take care of the TQ management for you. Fuel pump doesn't run. The K&N raises the horsepower of your 5.7 Vortec crate engine by 45 percent. The cooler charge air (plus tubing length and bends) dropped the peak boost pressure from 19.1 psi down to 17.7 psi. If powertrain performance projects and hardcore technical content are your interest, Power & Performance News is the publication designed for you. As long as you don't have any emission systems removed, you will pass without any issues. Using 3.5-inch aluminum tubing from CXRacing, we configured the intercooler between the YSI supercharger and the blow-through carburetor bonnet. 496 cubic inches. Injector type: US-CAR, saturated. This ignition system upgrade will allow you to set your distributor for a little more timing advance. Do you offer anything for the 5.3? Forget the typical race-motor build up, Boneyard Boost was all about force feeding some tired, high-mileage workhorse we purchased for the paltry sum of $500 ($250 on half price sale weekend!). However, Chevy still offers the 454 big block V8 as a crate engine. There was plenty of power left in the YSI, but at 847 hp we couldnt help but be amazed at the extra strength GM put into the design of their 290-hp big block. Only a set of dyno headers and an electric water pump were different. Later i want to install the banks PPB 49070 package on this motorhome next year. The 1993-or-so design FEAD has been shown the clear the factory hood. The exhaust does not have CATS with dual to the muffler and single exit tailpipe. I borrowed a friends TBI 454 dually to pull my blazer one time and it impressed the **** outta me. When you buy a single component or a complete kit, like a camshaft, you must ensure that it is suitable for your car. The 7400 was essentially the same big block 454 that carried Chevy through the muscle car years, but a hydraulic roller camshaft and revised cylinder heads helped to make it far more efficient than the old LS6 could ever dream of being. torque so it will definitely be able to hold the upper gears better when hill climbing and have improved acceleration. We are currently waiting on more ECM's to come in to be able to provide them on exchange. GAS MILEAGE. PART NO. Or if I pay to send in, is the return shipping included in the $495? Vise grip, needle-nose and standard pliers. Even better than the big peak gains was the fact that the cam swap . The performance chip is fully compatible with your Chevrolet Silverado 1500 in all trims, including the 2.7L, 3.0L, 4.3L, 4.8L, 5.0L, 5.3L, 5.7L, 6.0L, 6.2L and 7.4L engines. Dedicated to making your Chevy Truck bad***. Yes we modify the shift patterns to hold the upper gears longer, your shift kit would not interfere or cause issues. Is it possible to get the newer 0411 with your tune for my truck. The Chevrolet 454s of the 1970s were the most powerful, with the LS5 producing approximately 360 horsepower and the LS6 generating around 450 horsepower. Yes, you will still pass emissions as long as you don't tamper with the existing emissions systems. Even so, this engine was built primarily to provide huge towing power for CAFE-standard exempt vehicles, so there remains some room for improvement. Our tuning is custom to your vehicle so if you ever did have a dealer flash the computer it would wipe out the performance settings and revert to stock. Weve seen a few 1996-1997 PCMs with this issue. They seem to be similar to those used in your RV work. Cost would be $495. watch out for chips as they just bump the fuel curve. We measured our stock iron heads right out of the box and the retainer-to-seal clearance was only .470-inch. If I order a ecm reprogram will this fix my speedometer error too?? I have a 2000 gmc k2500 with the l29 454. Engine is in stock configuration with no upgrades. I have 2000 Itasca, 30 foot Class A motor home with a high mileage engine, will the ECM performance reprogramming, short the life of my engine? In the end, we selected a 1999 Gen VI 454 and pulled it from its home in the engine bay of a 1-ton work truck. If you continue to use this site we will assume that you are happy with it. A restrictive or clogged air filter will force the engine to work harder to breathe, which makes it less efficient. The terms ECM, PCM, and VCM are all used to describe the engine computer by various manufacturers, yours is located above the radiator . Thanks for any help. The L29 454 was originally rated at 290 hp and 440 lb-ft of torque thanks to a combination of fuel injection, large oval-port heads (to replace the peanut ports used in the previous Gen V motors) and a slightly higher static compression ratio. Buy in monthly . This mod will not be inexpensive or simple to execute, but it will pay for itself if you do a lot of towing or drive a lot of miles. Headers suggested. Don't worry about what a camshaft may produce at 4000-5000 rpms in truck engines like this - YOU DON"T DRIVE THERE! This project will also let customers know if spendintg approx $2300 on all these upgrades is going to give them the results they need from their big block engines. Originally Posted by PonyKiller87 Ok, sounds just like swapping over the 96-00 vortec 350 to the 0411 as far as the wiring goes. You can pretty easily get 400+ horses out of that thing and it be streetable. I read in earlier questions asked that you had stopped doing the earlier ones. I do still have all the O2 sensors but would like to delete them if possible. The intercooler did indeed drop the inlet air temps before the carburetor from 248 degrees to 111 degrees and the cooler charge dramatically improved the power output. 95K views 2 years ago WESTECH PERFORMANCE GROUP LETS TALK TORQUE! Yes, we can do that. I am doing a cam swap on a 98 GMC K3500 7.4 comp cams telks me i will need a custom tune according to cam specs this truck is primarily used for towing plan to use stock fuel injection if posdible any info would be greatly appreciated, I have a 1996 Chevrolet K3500 what is 7.4 454. It is a re-programmed ECM, either you send yours in or we send you one on a core exchange. I own a 1998 Safari Trek 2830 P32 chassis with an L29 28'7" Class A RV Drivetrain it s completely OEM.. Normally, advancing the distributor would increase octane sensitivity and possibly fuel economy, but the upgraded ignition system will allow you to do so without adversely affecting fuel burn or horsepower. I have a 1999 3500 Chevy crew cab with the 7.4l 454 Ive got Gibson headers true dual exhaust with flow masters no cats. I have a GMC PCM service # 16238212 for a 99 Topkick w/7.4L 454 gas engine; and was wondering if you are able to repair these PCMs/ECMs or have an equivalent I can replace it with? 16238212. 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. Return shipping is included , you are responsible for shipping to us , however if you choose the "core charge" and order the ECM , we can provide a return shipping label for your core and deduct from the core refund. I filled out a form and sent to COMP Cams to see what they recommend and sent an e-mail to Blackbear to see what cams they had experience with since I will need to PCM tune redone. That extra air going into your engine needs to get out somehow; installing a full aftermarket exhaust system like this is always good for more fuel economy, especially when combined with a freer-flowing intake. Orders placed on the weekend or after cutoff on Friday, and orders placed on select holidays, If you will be sending us your ECM for reprogram you will need to select "Remove Core Charge". The problem with making more power is that cost and performance often go hand in hand. Warmed up at idle the gauge is reading 1200RPM then put it into drive holding the brake and its reading about 1000RPM. The truck does not need to be emissions compliant. Yes you are correct that there is torque management which "pulls" back power when taking off from a stop. Primary or Expansion Gauges And Upgrade Kits (52mm) For 2008+ OBDII CAN bus vehicles, Upgrading SIx-Gun, Economind, and SpeedBrake, or use with BBus Sensor Modules. Always a big complaint with 454 TBI trucks. Chevrolet Performance 10141280 Part Number: 809-10141280 Chevrolet Performance L29 Vortec Cast Iron Cylinder Head L29 Vortec Cast Iron Cylinder Head 1991-2000 Big Block Chevy Gen V/VI Engines Only Bare Head Sold Individually View Details $756.99 Ships on 03/02/23 FREE Shipping Lowest Price Guarantee Add To Cart Check the make, year, and model of your car to see if the VIN number is available. The 8th digit of your VIN is the letter "D" which designates your engine as a 7.4L LP4 which is different from a normal L29 7.4L. For a better experience, please enable JavaScript in your browser before proceeding. I sprayed starter fluid in the tbi and it fired up for a few second. We set it for the best performance in all conditions, it is not user adjustable. The stock Vortec iron head will not tolerate more than .440-inch lift. Parts overview- James L29 Vortec 454 build Ep2 - YouTube 0:00 / 19:37 Parts overview- James L29 Vortec 454 build Ep2 20,387 views Oct 10, 2019 391 Dislike Share Save Dick Hamm 4.68K. Howards, Hydraulic Roller Camshaft, Chev BB Gen 6 454-502, GM, Chev BB Billet Steel Hyd. As I understand it I do not have the newer 0411 ECM and these have better processing power but need to be repinned. youll have to stick to a torque cam because of the computor needs vacuum (speed density) headers will help greatly. I installed a K&N replacement are filter in the stock air box. Straight Port Cylinder Heads 6. We can accommodate your requests for the oxygen sensors, speedometer adjustment and increased HP/TQ. There should be no reason to ever need to reprogrammed in the future and if you needed a replacement PCM we can take care of that for you. as far as the cam, make sure that year didnt have the core support going down the center of the rad (pretty sure it didnt). What sets us apart from the others? It gets you an EGR blockoff plate for the Vortec 4.3/305/350 engines. Also the torque management. CHEVROLET 7.4L/454 - Free Shipping on Orders Over $99 at Summit Racing Departments Restoration Stock Replacement Street Rod Shop Departments Air & Fuel Delivery Books/Videos/Software Brake Systems Chassis & Suspension Cooling & Heating Engines & Components Exhaust Exterior & Accessories Fasteners & Hardware Fittings & Hoses Gaskets & Seals The air filter is easily removed, cleaned, and reused. We can easily do this with the specs you provide. From my experience, the HyperTech programmer for those engines is pretty generic and does not make very many changes in the programming. I know that my question is very reduntant but I need to ask it .I pull a trailer and want a little more tow po1wer. Just make sure to include that information in the order comments and we can make that happen for you :). I have a 1999 Fleetwood Flair with a 7.4 Workhorse. Purchase a Chevy 454 crate engine online from JEGS High Performance. The Vortec 454 was touted as having substantially more power. Without going into the engine, they make a supercharger kit for it, I know whipple use to. These modifications will help to generate more horsepower without adversely affecting fuel efficiency, which will ultimately increase net mileage. A restrictive or clogged air filter makes the engine work harder to breathe, which reduces efficiency. Typical turn around is 3-4 days, sometimes quicker. This cam is designed specifically for the TBI 350 small-block and specs at 194/214 degrees of duration at .050-inch tappet lift with .398/.442-inch lift. Next best upgrade you can make is the Banks TorqueTube headers (, We recommend these injectors:https://www.fiveomotorsport.com/bosch-oem-454-j-code-884-black-knight/. It will not void your factory warranty, and does not modify any emissions systems. We use the original black box PCM's. So, I am contemplating upgrading this thing for more power, or selling and buying a Dmax. Your email address will not be published. The 1970 Chevrolet 454 was the most powerful with outputs of 360 and 450 horsepower from the LS5 and LS6, respectively. Oil tends to collect on the crankshaft counterweights, adding weight to the rotating assembly (crankshaft, rods and pistons) and reducing horsepower through parasitic drag. Mfg Performance Parts www.straubtechnologies.com www.distributorgears.com What type of gains could I expect with a tune for this? If you don't mind a "dirty" PCM case then we can take care of an order for you. TQ with those modifications done. Although Chevrolet doesn't specifically recommend it for this engine, the extreme slipperiness of a full synthetic will allow you to run a thinner weight oil without worrying about undue engine wear. Temperature measurements taken before and after the carburetor revealed that the fuel cooling dropped the intake charge temperature from 235 degrees (before the carb) down to 120 degrees (after). We don't however specialize in forced induction applications so we would not be able to help you with that. Change to a synthetic oil that is light-weight. With the shut downs due to the virus, our normal service company that does that for us is closed. Buy your Painless Performance 60211 Standard Length MPFI Harness for 1996-2000 GM Vortec 7.4L V8 at Amazon! Rowe studied engineering, philosophy and American literature at Central Florida Community College. For GM vehicles, the Vortec variant increased power by 60 horses. I've noticed a significant performance uptick, but it seems to fall flat in the upper mid-range, almost seems like it could use a MSD multi spark discharge, I don't know, but I'm considering having a dyno test to see what is happening. I have a 1998 Winnebago Brave on a p30 chassis with the 7.4 with a Banks Power Pack. We can adjust for speedometer error. I have a 2000 7.4 engine transmission and full wire harness and ECM from one motorhome and want to put it in my 1995 motorhome. If it does work what would do for pulling and climbing hills? To find out just how much the 30-year-old behemoth could muster, they took it to Westech Performances dyno room. I have a 2000 OBS Chevy quad cab with a 454 Vortec. Configured with our pulley combination, the YSI spit out a peak boost pressure of 19.1 psi where the boosted big block produced 791 hp and 713 lb-ft of torque. No videos but your ECM is fairly easy to identify and replace. WARNING: Products may contain one or more chemicals known in the State of California to cause cancer and/or birth defects or other reproductive harm. 454 Vortec Reliability and Ownership Guide, Pre-Purchase Inspection: What to look out for, crate version of the 454 big block from Chevy, 1996-2000 Chevrolet/GMC C/K GMT-400 platform trucks 2500/3500, 1996-1999 Chevrolet Suburban 2500/GMC Suburban 2500, 1996-2000 Chevrolet Express ( & 1 ton versions), 19982001 Chevrolet Kodiak/GMC TopKick/Isuzu H-Series 4500 5500, Larger Fuel Injectors and Fuel Pump Regulator. Sequential-Port Fuel Injection (454 only had 2 Throttle Body Injectors) 3. Reading some of your responses I came across one with regards to a 1996. The old, weak 240 HP 454 is every bit as. After all, every horsepower lost to such "parasitic drag" is one less that won't be helping your truck move down the road. We can tune it if you can build it :). We would reprogram yours and put it in a new case so it looks nice! Of course, the guys wanted to see what the old iron block had in her, so they ran a baseline test. Topping the engine is a borrowed four-barrel Holley XP carburetor. My next upgrade is going to be exhaust. The banks system will give you 70hp and 85lb-ft. Hello! Do a 12 swap and be done. The great thing about using a blow-though carburetor combination is the intercooling effect you get from the introduction of fuel. Any "recalibration" would require sending your ECM to us for programming changes. Free shipping. I wish we could say for sure that you will be able to see a nice gain but we try not to over-promise on that. After installed Ultrapower GM/ Workhorse 1998 7.4l Vortec 454c. as much as possible im going to do a cam exhaust and injectors and intake so my questions are what do you think my gain would be with your pcm and can it be piggy backed with a plug in tuner thanks matt, would i be able to get a retune if i add a cam after, and what is the turn around time, thanks. This 1-ton dually truck is used for hauling a large slide in camper and atv trailer. I have a 2000 C3500 with the 454/L29 and auto trans. We do not go further back than 1996 (OBD2) modules, sorry. I have Bosch Gen III injectors; Volant Air intake; and 3 exhaust. My car is GMC pick-up 7.4L 1998. it is manual transmission. oh, by the way, this is a low mileage engine, single owner and I have taken excellent care of this truck. This combined with the internal step gearing and maximum engine speed of 6,000 rpm to produce a peak impeller speed of 51,700 rpm, well below the listed maximum of 65,000 rpm. I have a vortec454 in a non smog az tow vehicle. We require the VIN so that we can pull up your vehicle's specific parameters and create a truly customized tune for your vehicle. Safely gain up to +35 HP and up to +5 MPG in fuel mileage in your vehicle by safely optimizing your air/fuel ratio and timing curve for increased efficiency! Will the UltraPower tune, give me the "best bang for my buck" performance increase? In 1996, when all of GMs models received excellent reviews due to a new range of engines that added power, every one of its vehicles were praised by clients. I'm interested in the available upgrades for the vortec 454. Also known as the Vortec 7400 (7.4L, Regular Production Option designation L29), Chevrolet's Vortec 454 was a modern-day evolution of the company's most legendary big block. The stock injectors are fine for our performance tuning. I am upgrading the fuel injectors with the new Bosch III's and the plugs and wires. Does this computer hav egr delete programmed into it. However, this engine was intended to provide significant towing power for CAFE-exempt vehicles, so there is still room for improvement. They said they no longer support my RV and had no parts available. Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. will your new part ecm work on this motorhome. I am ready to pull the trigger if I continue to run 87 octane fuel. Can you reprogram and net me the same HP & TQ numbers as the L29? The heads, pistons, and intake are stock. The engine receives cooler, more oxygen-dense air through a chilly air induction system. This upgrade will not only improve overall top end power but it also . If you would like to place your order feel free to give me a call at 800-417-4559.