The single core from CXRacing featured 3.5-inch inlet and outlets and had been tested previously at over 1200 hp and 25 psi. If you had the proper tuning software, you could tune it yourself later. Topping the engine is a borrowed four-barrel Holley XP carburetor. I am doing a full engine swap from a damaged motorhome to my older motorhome. better yet have it tuned (Brian Bosch I believe is the man to talk to about . You would see a nice gain in power, on your 1997 we generally pick up about 30 horsepower and 35 lb-ft torque. Apr 10, 2008 #5 M MyBoTy Veteran Member We will safeguard your e-mail and only send content you request. These modifications will improve net mileage without sacrificing power, resulting in better overall mpg. Mfg Performance Parts www.straubtechnologies.com www.distributorgears.com The 454 cubic-inch 7400 Vortec V-8 GM motor, which produced 290 horsepower at 4,000 rpm and had 410 pound-feet of torque at 3,200 rpm, was a smooth four cylinder without much difference between the top and bottom. Before adding boost, the boneyard big block was run in normally aspirated trim and produced 427 hp at 5,500 rpm and 476 lb-ft of torque at 3,900 rpm. $399.99. After installed Ultrapower GM/ Workhorse 1998 7.4l Vortec 454c. 1997 gmc 3500 cc dually. It was only designed for Chevrolets high-performance vehicles, such as the Chevelle and Corvette, and there were claims that engine horsepower output was actually underreported by Chevrolet during the muscle car wars. Im doing a full build on the motor Ive been told that these injections systems dont do well with these kind of upgrades. Our acclaimed editorial staff covers all aspects of engine and driveline upgrades with a mission of presenting information that is both interesting and achievable for the average car guy. I'm sure there are other differences that would need to be addressed but you should still be able to re-use the original key and ignition harness. There is a small red wire that has never been connected to anything. what features will i gain with this new unit. I sprayed starter fluid in the tbi and it fired up for a few second. Hi Warren, that is definitely something we can tune for. How To Add 70 Percent More Power to A Chevy 454 V-8. Always a big complaint with 454 TBI trucks. You can either pay $100 for the core and then be refunded when we receive back yours or you can send in your ECM for reprogram. After selecting a motor, we set about making the necessary changes for our test. The Gray, the green with white strip and the black test grounded. Having tried the things you already have, I am pretty confident the issue is the PCM. Gasoline engines do not require different settings for different conditions like a diesel engine does. 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". Vise grip, needle-nose and standard pliers. It was utilized in the Chevrolet Silverado, GMC Sierra, Chevrolet Suburban, and Chevrolet Express. Yes our tuning does work for trucks as well. Thank you. Yes it would, the Banks PowerPack is helping the engine breathe better but the computer is not doing anything to take full advantage of it. 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. Check if this part fits . Yes - We can definitely take advantage of the current modifications done to the truck and really help it out. Marks spare time was heavily consumed by reading automotive magazines and wondering how in the heck people could land a job testing cars all day. Dont buy a camshaft because someone claims its fantastic; instead, purchase one because you know it will fit your vehicle and give you the performance look you desire. 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? Will the UltraPower tune, give me the "best bang for my buck" performance increase? I THINK I want a diesel until I look at the prices. And what is the final cost of your ECM. 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 "SE" Special Edition Tuning Kit For MerCruiser 454 & 502 Magnum MPI Engines. Vortech Superchargers torque so it will definitely be able to hold the upper gears better when hill climbing and have improved acceleration. Growing up, Mark always had a mind for tinkering on random items throughout his home and dads garage, including a 1953 Ford Mainline and 1971 Corvette Stingray. Reasons to buy: The guys over at Hot Rod magazine wanted to prove its possible to make big horsepower from a Chevrolet big-block V-8 lifted from a junk1986 motorhome. What are your recommendations?? BBK is your Number One Aftermarket Performance Brand in the USA - American Designed and Built . Also how much horse power and torque do these motors have stock? 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. Vehicle Monitoring and data-logging like no other! With the shut downs due to the virus, our normal service company that does that for us is closed. Check the make, year, and model of your car to see if the VIN number is available. I use the truck for towing and it is quite weak, If this ecm has to be reprogrammed in the future do I go to GM Dealer or have to send back to you?? Is this enough information to create a tune or will you need more information? Just need a working substitute, no enhancements really needed. Thank you. 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. oh, by the way, this is a low mileage engine, single owner and I have taken excellent care of this truck. Buy your ELGIN Industries HL-7003S Hydraulic Roller Valve Lifters set at Amazon. Typical gains are 40-45 horsepower and 45-50 lb-ft torque, 4. If so, is that the unit that sits above the radiator of a 2000 Itasca Suncruiser V32 w/ L29 7.4l (454ci) Vortec? It is unlikely that the Vortec 454 accessories will clear the hood. Without going into the engine, they make a supercharger kit for it, I know whipple use to. I was thinking about removing the catalytic converter and was wondering if your reflash will delete the "check engine" light that will probably occur when I cut it off? Learn more. The same 290 horsepower that was standard for all GM cars in 1980 was maintained throughout the decade. We tune the original black box PCM but do not do the 411 swap. From my experience, the HyperTech programmer for those engines is pretty generic and does not make very many changes in the programming. Do you still tune the 96 ecm? If I order a ecm reprogram will this fix my speedometer error too?? We are currently out of clean/painted cases for the PCM's. If you can find this PCM in a salvage yard or from a different type of vehicle that uses the same, we can likely program it to your vehicle for you. We CAN tune the engine computer with our UltraPower tuning to get more performance but we MUST have you send your PCM in to us for programming as it has a unique PCM that we don't have cores for. I have a 1999 Fleetwood Flair with a 7.4 Workhorse. 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. The heads used on the L29 combined the large oval intake ports with small (100 cc) combustion chambers to produce a slightly higher (than the Gen V) 9.0:1 compression. Also I want to send you guys mine as core but I wanted to get yours first so Im not without my truck and if something goes wrong I can plug my factory one back in, so can I wait to send mine till after I get yours? Roller Lifters 5. 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. Once the order is placed and you have paid for a core, we will program a PCM here and ship it with a return shipping label for your core. FULL RESULTS-GEN 5 454 UPGRADE-STOCK PEANUT PORT HEADS. If you are wanting to keep the truck otherwise stock, the tuning would be your best upgrade to boost the performance and it would definitely help the low end where you are wanting it to. Our typical turn around time is 2-3 business days. That being said, the threads on the net are pretty old. You can definitely hold on to your PCM, that is not an issue. Switch to a lightweight synthetic oil. Performance. Don't know how tuning would work. I do some pulling but mainly driving with this truck I have a factory y pipe with no cats and dual 3 inch flowmaster mufflers. Do you have any videos of how to locate and remove my ECM? Only a set of dyno headers and an electric water pump were different. Whats the stock numbers on a Vortec 454? The terms ECM, PCM, and VCM are all used to describe the engine computer by various manufacturers, yours is located above the radiator . I would think that u-haul did not use their own ECM. In our quest to locate a suitable 454, a typical rip to the wrecking yard revealed at least three of the four available big-block combinations. 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. Mar 20, 2011 #4 M MyBoTy Veteran Member Feb 9, 2002 1,567 Lubbock, Texas USA It wasnt the best moment to put out a big cubic inch big block designed for performance vehicles, but the Chevy 454 made an impact. can you tune it Perform with these upgrades, We would like to have ordered the 7.4 custom tune ,but appearantly you are out of stock at the moment.Is there any time frame when you will have more modules.I would like to send you mine but I need my vehicle.Also we would like to have had the reasonable price. Straight Port Cylinder Heads 6. Et si je devrai faire recalibrer mon ecm? Free shipping. merci. After all, every horsepower lost to such "parasitic drag" is one less that won't be helping your truck move down the road. I have a 1996 C3500 crew cab dually with a 7.4. Thanks. If they were cheap enough, sure. It was bone stock 2x4 extended cab dually. This is only 1 of the many changes that we make with our programming to achieve great power gains. Any thoughts from you technical guys? JavaScript is disabled. See listing details. They have a high strength carbon steel housing and a high performance rolled seam that exceeds OEM pressure requirements. Prices increase after 2/28. . . We can tune the 2000 ECM for that engine and I'm pretty sure the ignition harness on that vehicle has no tie in with the ECM. I am certain we can get more power and overall better drivability with our tuning versus your current setup. It will not void your factory warranty, and does not modify any emissions systems. We set it for the best performance in all conditions, it is not user adjustable. Even better than the big peak gains was the fact that the cam swap . In addition to the powerful YSI supercharger, the kit included a cog-drive system to eliminate belt slippage under boost. That represents a 70-percent increase in horsepower. Best, least expensive way to get more power out of this engine is with our custom tune. My question is that I have a 1998 7.4 parts truck. I've always heard that they were a good upgrade to the TBI 454 and earlier 454 heads. We can even modify these Chevy 454 rebuild kits to your specifications, giving your vehicle exactly what it needs for maximum performance. Chevrolet 7.4 Vortec was a modern-day improvement of the firms most legendary big block. I do still have all the O2 sensors but would like to delete them if possible. For more information, visit www.P65Warnings.ca.gov, NOTICE: Fororders outside of United States. All above engines equipped wit Hydraulic Roller Lifters. This ignition system upgrade will allow you to set your distributor for a little more timing advance. Find many great new & used options and get the best deals for BBK Performance Parts 1710-XC GM VORTEC 305/350/454 80MM POWER PLUS THROTTLE BOD at the best online prices at eBay! Would we still get the good price when you get more control modules in stock? 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!). Elgin Industries set of (16) Hydraulic Roller Valve Lifters compatible replacements for Big Block Chevy GMC & Pontiac engines. The Vortec 8100 was built off of the GM 454 engine platform, also known as the 7.4 Vortec. The 8.1 Vortec was produced to compete with Dodge's 8.1 Magnum V10, and Ford's V10 Triton engines of the time. In search of power, GM reverted to the big-block engine design, with a 454-cubic inch displacement. Inexpensive and fairly easy to install, a windage tray will help to keep oil in the sump where it's supposed to be and can even help to extend bearing life by keeping the rotating assembly in balance. The tuning is custom to each vehicle depending on calibrations, modifications and any special requests. We appreciate it but we only specialize in the big block engines. Power & Performance News is the source for news, tech and products that help you get more performance from your vehicle. Purchase a Chevy 454 crate engine online from JEGS High Performance. The truck does not need to be emissions compliant. Right now I have a CAI, 2" full length headers, 3" dual exhaust and EGR delete. However, Chevy still offers the 454 big block V8 as a crate engine. 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. Can I tune it myself later with my own tuner or is it still a black box like the oem? Orders placed on the weekend or after cutoff on Friday, and orders placed on select holidaysareprocessed on thenext business day. All other modifications are going to be expensive, labor intensive and still not necessarily yield the same results. Seems like it's lacking power towing my boat. Dec 18, 2007 . Distributors cap and rotor kit features brass inserts and stainless steel rotor springs,designed to provide the best possible fit to ensure maximum conductivity between the distributor towers and spark plug wires,prevents arc through and crossfire. This is not an automatic check, it is performed manually by a parts specialist once the order is placed. General Motors debuted the 7.4 Vortec in 1970, one year before emissions requirements were tightened and three years before the gas crisis hit with full force. I like my shift points where they are. 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. Best of all, this engine will make that power all day long without the threat of grenading under the stress of a turbo or supercharger. The Chevrolet 454 was phased out in most passenger vehicles by 1975, but it remained a viable power plant in heavy-duty Chevrolets until 1996. We set all the parameters in the PCM, so you will not have a way to make adjustments on your end. We would recommend speaking directly with a camshaft manufacturer to determine the best for your particular engine. Whether your power boat is running boost or naturally aspirated, we have the correct performance parts for your application. Any "recalibration" would require sending your ECM to us for programming changes. When reliability and performance can't be compromised, you want TXL Wire - not the inexpensive primary wire you find in other harnesses; High strand count copper and high-quality insulation makes for high abrasion resistance and easy routing. im wanting /needing power and torque. We are not able to assist in providing this PCM. Yes, we can tune your L21 for similar gains as with the L29. 7.4 Vortec Specs Chevy based the 7.4 Vortec off their 454 big block engine, hence the name 454 Vortec. The stock injectors are fine for our performance tuning. The tune will definitely wake the truck up. Anything that will help the performance. Thank you. For a plain jane Sierra, not bad in my opinion. I just ordered an ECM for my 7.4 and was curious on if you guys did this tuning on the 5.7s? We would just need to know the tire size you are running and if the rear gear ratio was ever changed from factory. I don't drive the truck daily so could send my ECM to you for tuning My question is would this eliminate the SES light for the cats P0430/20 and air pump ?? We have been doing them on a limited basis, it has been very challenging to find good cores to use. The engine displacement in liters is 7400, which is readily changed to 7.4 liters. That extra air entering your engine must go somewhere; a full aftermarket exhaust system like this is always beneficial to fuel efficiency, especially when combined with a freer-flowing intake. Check out their web sight Bankspower.com 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. my ecm has to be replaced. He has worked as a tractor-trailer driver and mechanic, a rigger at a fire engine factory and as a race-car driver and builder. It may not display this or other websites correctly. Sorry I dont have the VIN, the truck is not local, I have a 1998 2500 7.4 Vortec GMC Suburban. 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. We wanted to make sure the air/fuel and timing curves were spot on before running the supercharged monstrosity in anger. Dedicated to making your Chevy Truck bad***. If you are placing an order to ship outside the United States, Shipping Insurancewill be required and added automatically at checkout. 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? Another popular upgrade is changing to Bosch 4 hole injectors. Precision Auto Injectors Genuine Delphi 12568155 12586557 GM Fuel Injectors Set of 6 2004-2007 GM 3.5L OHV. Can you reprogram and net me the same HP & TQ numbers as the L29? Is it worth tuning a black box or worth changing to 411, I have headers ,cat delete, 19.5 five 0 injectors, and Pulling cam swap. My question is you claim 40-55 hp gain on the 7.4l , and all the other tuners on the internet only claim 20-25hp gain, will I really see 40-55hp gain with stock engine, exhaust, and air filter?