The main improvements will be improved shifting and overall more torque to pull hills. 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. Yes, as long as it is a "J" (8th digit of the VIN) Vortec 7.4L, we can tune it. I have a 1999 Fleetwood Flair with a 7.4 Workhorse. I do still have all the O2 sensors but would like to delete them if possible. 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. We immediately checked the latest 8.1L off the list due to lack of availability and parts cross over. The Chevrolet 454-cubic-inch, or 7.4-liter, V-8 engine was an extremely powerful gas guzzler that should have remained obscure after the 1973 oil crisis. 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? Thanks. What sets us apart from the others? 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. The air filter is easily removed, cleaned, and reused. K&N Performance Fuel Filters are built for high flow rates and capacity while they provide outstanding filtration. Thinner oil drags less on internal engine parts, helping the engine to spin more freely and run more efficiently. 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. The P12 was only available for 1 or 2 years so there wasn't enough demand to continue producing products for it. 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. We are unaware of any cam upgrades specifically for the L21. We appreciate it but we only specialize in the big block engines. Please see our shipping terms for more information. Yes we modify the shift patterns to hold the upper gears longer, your shift kit would not interfere or cause issues. 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. Thank you. Feel free to call me with your vin # handy if you would like to get your order in. 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. Using 3.5-inch aluminum tubing from CXRacing, we configured the intercooler between the YSI supercharger and the blow-through carburetor bonnet. The most important changes that are made have to do with spark advance, fueling, transmission shifting and torque management settings. 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Some differences are: 1. When you purchase, just let us know any modifications or requests and we can accomodate. PART NO. I had a 7.3 F250 about 8 years ago and I really think the ol Chevy would run with it or out run it. 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?? In search of power, GM reverted to the big-block engine design, with a 454-cubic inch displacement. 4 Bolt Main GM Factory Vortec, Edelbrock's Performer Multi-Point EFI. The Chevrolet 454s of the 1970s were the most powerful, with the LS5 producing approximately 360 horsepower and the LS6 generating around 450 horsepower. 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. To others, the 7.4 Vortec 454 big-block was the perfect engine at the wrong time. The 1993-or-so design FEAD has been shown the clear the factory hood. We only specialize in the big block engines. 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. Will the UltraPower tune, give me the "best bang for my buck" performance increase? Maybe I need to go by the dealer and test drive a diesel or another gasser so I have a comparison. Do you have any videos of how to locate and remove my ECM? It has an ohv configuration with two valves per cylinder and a bore and stroke of 4.24 inches x 3 on the intake side. 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. Do a 12 swap and be done. Cost would be $495. If I send yall Parts list of what kind of cam, injectors, pistons, etc. Reference core exchange, what is the time limit for you to receive the exchange? Free shipping. 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). To further improve power, we also upgraded the stock hydraulic roller camshaft with an XM284HR from COMP Cams that offered .547 lift, a 230/236-degree duration split and 112-degree lsa. Yes - We can definitely take advantage of the current modifications done to the truck and really help it out. The tuning is custom to each vehicle depending on calibrations, modifications and any special requests. Rowe studied engineering, philosophy and American literature at Central Florida Community College. You can source the 454 HO directly from Chevrolet. Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. Most ordersare shippedwithin 24 hours from the order date. Is it actually running at that RPM or just showing that? Vehicle Monitoring and data-logging like no other! Could you do a downstream 02 sensor delete? A few weeks ago I bought a very low milage 454 Gen. VI L29 Vortec engine with hydraulic roller. im wanting /needing power and torque. 7.4 Vortec Vehicles Applications The Vortec 7400 had two variants, the L29 and L21, and they appeared in the following vehicles: Elgin Industries set of (16) Hydraulic Roller Valve Lifters compatible replacements for Big Block Chevy GMC & Pontiac engines. If it does work what would do for pulling and climbing hills? This 1-ton dually truck is used for hauling a large slide in camper and atv trailer. It was known as the Vortec 7.4 (7400, Regular Production Option designation L29) in North America and across other markets. Yes, this would be the compatible ECM with your VIN and part #. 2023 Power Automedia. Can you tune my new 2000 ECM and will it work without the original key and ignition harness. I borrowed a friends TBI 454 dually to pull my blazer one time and it impressed the **** outta me. As long as you don't have any emission systems removed, you will pass without any issues. Buy in monthly payments with Affirm on orders over $50. The bill: $3,699.96 for all but the carb. It was bone stock 2x4 extended cab dually. Install an aftermarket windage tray in your engine. Yes you are correct that there is torque management which "pulls" back power when taking off from a stop. Edlebrok performance heads with factory Combustion chamber size 100-110cc, valves set for .700 lift, I-2.190 E-1.880, 3/8" guideplates : GM Vortec EGR blockoff plate p/n is 12554606. $119.95. I have the 411. Precision Auto Injectors Set of 8 Genuine OEM 1996-2000 GMC Chevy 7.4L 454CID Vortec Rochester Fuel Injectors. Jump to Latest Follow . I would think that u-haul did not use their own ECM. 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. The engine receives cooler, more oxygen-dense air through a chilly air induction system. 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. You will gain approximately 35-40 horsepower and 45 lb-ft torque. I have a 2000 OBS Chevy quad cab with a 454 Vortec. I THINK I want a diesel until I look at the prices. Weve seen a few 1996-1997 PCMs with this issue. 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. Feb 1, 2016 #2 Jorge6.5 I'm Awesome Joined May 17, 2013 Messages 1,015 Reaction score Technical Specifications: No filter cleaning required for up to 100,000 miles. They said they no longer support my RV and had no parts available. Install a high-flow air filter and a cold air intake. We can also adjust your speedometer to be correct. I replaced the relay to no avail. 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. 1999 Crew cab dually, 454 vortec, AUTOMATIC. Only a set of dyno headers and an electric water pump were different. He eventually figured it out. The previous owner had the engine rebuilt in 2012 and tells me they installed an RV cam but I am not sure which one. 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. 1998 k 3500 454 auto 4:10 Dually..What on earth can I do to get more out of my truck..without mortgaging the house. It debuted in 1970 as an upgrade of the 427 big-block V8 engine. Et si je devrai faire recalibrer mon ecm? You can expect about 40-45 horsepower and 45-50 lb-ft torque increase with much better throttle response, crisp shifts and there is a reduction in the "TQ Management". Use a set of long-tube headers (exhaust manifolds) and an aftermarket exhaust system. We set it for the best performance in all conditions, it is not user adjustable. All above engines equipped wit Hydraulic Roller Lifters. Is the pcm that is used a 411? We also took the liberty of installing a Race-Port blow-off valve from Turbo Smart. 12568774 438 HP @5300 RPM 500 LB/FT @3500 RPM 1 2 Updated Design The 454 HO features an all-forged rotating assembly for great strength and durability. Stage 1 Upgrade for Mercury 525 EFI. The engine displacement in liters is 7400, which is readily changed to 7.4 liters. Straight Port Cylinder Heads 6. 1997 gmc 3500 cc dually. The 7.4L was originally offered in three versions: the LS5, LS6, and LS7 (which was never offered as a factory option to the general public). Windage trays are thin, sheet metal plates that bolt to the bottom of the main caps and act as a barrier between the oil in the pan and the crankshaft counterweights. Not sure if you have any other issues causing low power though because it should outperform the 5.7L, especially towing. Use for stock replacement OEM original equipment. Can I reprogram on the fly as conditions change and performance needs warrant a change?? Mostly people saying to try this and try that. You would see a nice gain in power, on your 1997 we generally pick up about 30 horsepower and 35 lb-ft torque. Don't know how tuning would work. Just wondering because Id buy one of those as well. better yet have it tuned (Brian Bosch I believe is the man to talk to about . My next upgrade is going to be exhaust. Most generic tuners only change very basic parameters within the computer, whereas UltraPower Tuning changes approximately 400 parameters including both engine AND transmission settings. What type of gains could I expect with a tune for this? Your email address will not be published. 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. We can also take care of the TQ management for you. Thanks. Change to a synthetic oil that is light-weight. Can i tell if my RV has this already? The heads, pistons, and intake are stock. Fuel pump doesn't run. Thanks to a maximum impeller speed of 65,000 rpm (racers go even higher) and a peak efficiency rating of 78%, the Vortech YSI was capable of supporting over 1,200 hp at 30 psi. I know they were installed in trucks from 96- 00?. Even so, this engine was built primarily to provide huge towing power for CAFE-standard exempt vehicles, so there remains some room for improvement. Project Boneyard Boost was one of those rare occasions where we got to apply a massive infusion of power to a motor that cost next to nothing. . We are currently waiting on more ECM's to come in to be able to provide them on exchange. I have a 1996 C3500 crew cab dually with a 7.4. 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! Check back with us as we plan on adding a set of Brodix Race Rite aluminum heads to the mix in Part 2 of Project Boneyard Boost. You might be able to run an L29 cam, but you will need to consult an engine builder. Thank you. The LS6 was discontinued after 1971 because of tighter emissions controls, and the LS5s power had dropped to about 245 horsepower by 1973 as a result of more stringent emission standards. 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. You can definitely hold on to your PCM, that is not an issue. I think they were made before Chevy started using real tornados. Stock TBI 454 makes 230hp and 380tq so stock fuel pump is maxed out right off and a typical 454 will run better with a fuel pump upgrade even with stock chip. Great motor and runs strong with gobs of TQ. If they were cheap enough, sure. 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!). The GM 7.4L UltraPower ECM has long been the ultimate performance modification you can make to your GM 7.4L powered RV or truck with the highest power gains on the market! 90 and older is particularly bad and that is largely due to NO OVERDRIVE. 4.56 might be abit tall. Obviously different, but I still think the 454 has more to offer. I just bought this 97 suburban 4wd with the bbc. is this unit ready for plug and play. Gains with the modifications you have done would be around 45 HP/ 45 TQ. All fuel injector specifications meet or exceed the manufacturer's specification standard. Typical gains are 40-45 horsepower and 45-50 lb-ft torque, 4. Oxygen sensor modifications can be done. oh, by the way, this is a low mileage engine, single owner and I have taken excellent care of this truck. 98 Single Rear Wheel 3500 7.4 Vortec. 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 have a 2000 C3500 with the 454/L29 and auto trans. Truck has k&n air filter, 2.5 inch exhaust (no cats), e3 spark plugs and 8.5mm plug wires. Do you still tune the 96 ecm? 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. Oct 25, 2004 Do you guys know anything about the L29 Vortec motor. Yes, we tune for 87 octane unless a higher octane is requested. How much can you get them for? See listing details. I have Bosch Gen III injectors; Volant Air intake; and 3 exhaust. I have a 2000 OBS Chevy quad cab with a 454 Vortec. Truth be told, Vortech offered a number of Maxflow Aftercooler systems but we selected an intercooler core we had on hand for testing. I am considering doing an EGR delete and I wasn't sure if this would accommodate that or if it will still throw a check engine light. Well, they can be had stupidly cheap, not counting the extra work it takes to remove the engine and then dispose of the lifeless RV. The state of California requires that this warning be posted for people purchasing products that reside in California. Hot Rod decided to bolt up some typical speed parts. 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 tune the original black box PCM but do not do the 411 swap. If you choose the core option we will program an ECM here and ship to you. With the shut downs due to the virus, our normal service company that does that for us is closed. Subtract the standard .050-inch clearance, this leaves only enough room for a .420-inch lift cam. Other #s not sure what they are if theyre useful, 86DAFMM0017433PS, HDW # 16239740. 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 question is that I have a 1998 7.4 parts truck. Windage trays are thin, sheet metal plates that fit over the bottom of the main caps and act as a barrier between the oil in the pan and the crankshaft counterweights. My car is GMC pick-up 7.4L 1998. it is manual transmission. We gain on average 45-50 horsepower and 50 ft. lb. I own a 1998 Safari Trek 2830 P32 chassis with an L29 28'7" Class A RV Drivetrain it s completely OEM.. Banks iDash: SuperGauge & DataMonster. Bosch p/n: 0280155884. Learn more. K&N fuel injection performance kit. I plan on a couple of cross country trips this summer before the Banks PPB install, so, should I wait for the tune until after the Banks install or do the tune this year? 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. Also the torque management. Check the make, year, and model of your car to see if the VIN number is available. I installed a K&N replacement are filter in the stock air box. This is not an automatic check, it is performed manually by a parts specialist once the order is placed. I have a 2000 gmc k2500 with the l29 454. Makes NO permanent changes to your vehicle's computer! These modifications will improve net mileage without sacrificing power, resulting in better overall mpg. Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube. The batteries are fully charged and there is 12 volts to the distributor. 7.4 chevy engine in georgia boy pursuit motorhome. Is it possible to get the newer 0411 with your tune for my truck. Buy your Painless Performance 60211 Standard Length MPFI Harness for 1996-2000 GM Vortec 7.4L V8 at Amazon! The terms ECM, PCM, and VCM are all used to describe the engine computer by various manufacturers, yours is located above the radiator . Dec 18, 2007 . I heard these trucks have a torque management system does this computer give my truck back all its power? watch out for chips as they just bump the fuel curve. It would be a good idea to re-tune for the Banks and injection systems. Im also trying to get more out of this engine without tearing into it so I was just hoping this fixed my gauge as well. Pindar The budget portion of the equation came from a 7.4L Gen VI big-block Chevy straight out of the local wrecking yard. I have a 1998 Winnebago Brave on a p30 chassis with the 7.4 with a Banks Power Pack. If I send in a functional pcm for my Suburban mentioned in last question whats the average turn around for it? Mar 20, 2011 #4 M MyBoTy Veteran Member Feb 9, 2002 1,567 Lubbock, Texas USA GAS MILEAGE. How to Get More Horsepower From a 360 dragster engine image by Robert Young from, Copyright 2023 Leaf Group Ltd. / Leaf Group Media. It is an all-iron engine (block and heads . 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. 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. my ecm has to be replaced. Dodge RAM 3.0 Ecodiesel Performance Upgrades Guide, Best Ford 6.7 Powerstroke DPF Delete Kit Upgrade. That being said, the threads on the net are pretty old. I just ordered an ECM for my 7.4 and was curious on if you guys did this tuning on the 5.7s? Probably cause no cats. I won't change the exhaust or add a ring eating K&N. The old, weak 240 HP 454 is every bit as. Yes our tuning does work for trucks as well. Now, that poses the question: what would you shoehorn this big-block Chevy into? We have been doing them on a limited basis, it has been very challenging to find good cores to use. no. And what is the final cost of your ECM. The 8.1 Vortec was produced to compete with Dodge's 8.1 Magnum V10, and Ford's V10 Triton engines of the time. Whether the kit is intended for stock replacement or racing, various levels of compression will allow for improved performance with emphasis on top-end power and high RPM. 7.3 is 250-275/505-525 stock. The same 290 horsepower that was standard for all GM cars in 1980 was maintained throughout the decade. I've always heard that they were a good upgrade to the TBI 454 and earlier 454 heads. After installed Ultrapower GM/ Workhorse 1998 7.4l Vortec 454c. It is bone stock except for tow mirrors and Kodiak door handles on all 4. We can accommodate your requests for the oxygen sensors, speedometer adjustment and increased HP/TQ. It was utilized in both performance automobiles and trucks, as well as maritime and industrial applications in various combinations. Of course, the guys wanted to see what the old iron block had in her, so they ran a baseline test. The C/K 3500's standard engine is a 5.7-liter V8 OHV 16-volt FI engine, and the 454 engine comes as an optional upgrade. Apr 9, 2008 #4 7 70SSman Veteran Member Aug 11, 2005 134 Amston, CT, USA 100$ with low miles. Richard Rowe has been writing professionally since 2007, specializing in automotive topics. Installed E3 spark plugs which seemed to help. If it is a 1998 then yes you can. This is a stock style setup, featuring a 4.000" stroke and bore sizes ranging from 4.250" (standard) to 4.375". Stronger shift points for towing and power. I am certain we can get more power and overall better drivability with our tuning versus your current setup. Thanks, WILL THE 2000 1 TON DULLY I HAVE STILL PASS CAL SMOG WITH THIS TUNE UP EMC. With our tuning, peak horsepower is at about 3500 RPM and peak torque is about 2500 RPM. Engine Hotrodders' Lounge Body - Exterior Transmission - Rearend . Check if this part fits . Naturally, the truck-based 454s were tuned for torque, so having nearly 500 pound-feet wasnt a big surprise. I dont have the 2000 VIN only the VIN from my 1995. "SE" Special Edition Tuning Kit For MerCruiser 454 & 502 Magnum MPI Engines. 2. The 1970 Chevrolet 454 was the most powerful with outputs of 360 and 450 horsepower from the LS5 and LS6, respectively. I was interested in your tune for this engine and was wondering what your best guess on the horse power / toque gains would be. Programmers. Step 2 Install a high flow air filter and cold air induction intake. We'll send you the most interesting Street Muscle articles, news, car features, and videos every week. It's a nice cam for a 454 big block chevy engine that runs with 1500-6500 RPM Range. CAN YOU REALLY MAKE DECENT POWER WITH A SET OF PEANUT PORT BBC HEADS?. Yes that would be fine, you would just need to call in to our service department and schedule a date :). While we do get reports back of fuel economy gains, that is something we can not guarantee as there are just too many variables that can affect an RV's fuel economy. When taken together, this fairly inexpensive approach can be good for noticeable gains in fuel economy. Roller Cam, .483 Lift . Buy your Big Autoparts Ignition Distributor Set DR474 DR331 at Amazon! The stock injectors are fine for our performance tuning. Would this work on 1996 7.4L L29? After selecting a motor, we set about making the necessary changes for our test. A restrictive or clogged air filter makes the engine work harder to breathe, which reduces efficiency. I sprayed starter fluid in the tbi and it fired up for a few second. 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. The Vortec 454 was touted as having substantially more power. Only tow rigs I have used to pull my Jeep with was this truck and my DD Driver 5.3 Tahoe. Full Forum Listing. I have a 1996 Suburban K2500 with the L29 engine and 4l80 trans. If you continue to use this site we will assume that you are happy with it. Interested, but don't want to buy one to find out i've already got it :D (my unit has 2 previous owners i think). The old cast-iron cylinder heads and low-rise intake manifold were dumped in favor of some aluminum PowerOval 280 heads from Trick-Flow with upgraded valvetrain and a Summit single-plane intake manifold. Very interested in this. You claim 40-55hp gains is that something that I will notice drastically or is it more of a subtle power increase? Aftermarket hood are hit and miss, we did find that the integrated airbox arrangement of the Suncoast hood played havoc with clearances that were confirmed to fit within the factory underhood bracing. At this point the engine run well, with no code problems. Yes, we can tune your ECM. The issue with your tachometer would only be fixed if there is an actual issue with your PCM. 7.4 Vortec Specs Chevy based the 7.4 Vortec off their 454 big block engine, hence the name 454 Vortec. If I order a ecm reprogram will this fix my speedometer error too?? What are your recommendations?? This engine series was utilized on Chevrolet and GMC large truck models such as the Suburban from 1996 through 2001. But like any stock engine, there was tons of power left to be squeezed out. Naturally, the truck-based 454s. Some parts are not legal for use in California or other . Buy your K&N PF-1000 Fuel Filter at Amazon! However, this engine was developed mostly for large towing ability for CAFE-exempt passenger cars, so there is still room for improvement. 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. father chris st mary's hanover,