Just worth mentioning. Yes, we could accept the PCM from your '98 as the core. When you buy a single component or a complete kit, like a camshaft, you must ensure that it is suitable for your car. 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. 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. 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. Injector type: US-CAR, saturated. Install an aftermarket windage tray in your engine. 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. performance upgrades for 88-94 TBI chevy truck.? Would this work on 1996 7.4L L29? Maybe I need to go by the dealer and test drive a diesel or another gasser so I have a comparison. I am considering your tune for my motorhome. 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 had a hard time finding much of anything for these engines. Are there any gains to be had by programing and adding headers to my truck? I have a 1998 Winnebago Brave on a p30 chassis with the 7.4 with a Banks Power Pack. With the shut downs due to the virus, our normal service company that does that for us is closed. 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. 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 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. Now, that poses the question: what would you shoehorn this big-block Chevy into? Use a set of long-tube headers (exhaust manifolds) and an aftermarket exhaust system. Fortec4x4 Jeep Customizing - FORTEC4x4 This is only 1 of the many changes that we make with our programming to achieve great power gains. With the intercooler assembly in place, we once again ran the blown big block in anger with amazing results. We require the VIN so that we can pull up your vehicle's specific parameters and create a truly customized tune for your vehicle. Weve seen a few 1996-1997 PCMs with this issue. A restrictive or clogged air filter will force the engine to work harder to breathe, which makes it less efficient. He eventually figured it out. Switched to Mass-Air Flow. BBK Performance Parts 1710-XC GM VORTEC 305/350/454 80MM POWER PLUS Use for stock replacement OEM original equipment. Performance computer re-calibration and a Custom High flow Billet Flame Arrestor that increases the maximum power by more than 25 HP* and 30 pounds of torque*. Is this enough information to create a tune or will you need more information? (454 used only MAP) 2. And a k and n filter. Rowe studied engineering, philosophy and American literature at Central Florida Community College. The Vortec enhancements simply allowed GM to pass smog at a higher RPM. I have a 2000 OBS Chevy quad cab with a 454 Vortec. The 454 Vortec is the last in a line of one of the most successful classic engines in GM history. 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? We removed the factory EFI injection, and replaced it with simple carburetion. The cooler charge air (plus tubing length and bends) dropped the peak boost pressure from 19.1 psi down to 17.7 psi. It is not 4x4. K&N fuel injection performance kit. 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. 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. 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. Though larger than the previous 7.4L models, the unique 8.1L could not utilize the amazing array of performance parts available for the previous three conventional big-block models. Right now I have a CAI, 2" full length headers, 3" dual exhaust and EGR delete. Thanks. How to Make Power with a Chevy TBI V-8 - MotorTrend Raylar performance packages allow your 496 to produce massive amounts of power without sacrificing reliability. Could you do a downstream 02 sensor delete? In an effort to further drop the inlet air temps, we installed a makeshift air-to-water intercooler. Thanks. When you purchase, just let us know any modifications or requests and we can accomodate. Steel Camshaft 4. Power & Performance News is the source for news, tech and products that help you get more performance from your vehicle. Chevy 8.1 Vortec Ultimate Engine Guide - Specs, Performance, Problems Yes that would be fine, you would just need to call in to our service department and schedule a date :). To find out just how much the 30-year-old behemoth could muster, they took it to Westech Performances dyno room. For a plain jane Sierra, not bad in my opinion. 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. Yessir! The single core from CXRacing featured 3.5-inch inlet and outlets and had been tested previously at over 1200 hp and 25 psi. We are running about 2-3 days on turnaround right now. Here is info from COMP Cams. Without going into the engine, they make a supercharger kit for it, I know whipple use to. This engine has two valves per cylinder and features multi-port fuel injection. 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. 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. Typical turn around is 3-4 days, sometimes quicker. I fought this truck with the cats deleted and air pump disabled. 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. 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. Yes, we can do that. UltraPower 7.4L ECM Benefits: Gains of 40-45 HP and 45-50 lb-ft torque depending on existing upgrades Gains of 1/2 - 1 MPG Maintains speed and higher gears when climbing hills So if I have your tune done what is the turn around time sending my PCM to you? youll have to stick to a torque cam because of the computor needs vacuum (speed density) headers will help greatly. It is quite a noticeable difference! Typical gains are 40-45 horsepower and 45-50 lb-ft torque, 4. I have a 2000 7.4 with a bigger cam cold air kit dual exhaust better mass air flow senser and roller tip rockers can u tune that as well or do you just do stock stuff, I have a 99 k 3500 Chevy 1 ton with 454 5 speed.will your computer tune work in my truck and can I expect 40+hp gain? Orders placed on the weekend or after cutoff on Friday, and orders placed on select holidaysareprocessed on thenext business day. 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. The previous owner had the engine rebuilt in 2012 and tells me they installed an RV cam but I am not sure which one. Also how much horse power and torque do these motors have stock? 5. 2019 Rodney W. Brazel Inc. - Ultra RV Products is a Division of Brazel's RV Performance, UltraPower GM / Workhorse 1998-2000 7.4L Vortec (454) Custom Tuning, within 24 hours from the order date. 90 and older is particularly bad and that is largely due to NO OVERDRIVE. But like any stock engine, there was tons of power left to be squeezed out. This upgrade will not only improve overall top end power but it also . After installed Ultrapower GM/ Workhorse 1998 7.4l Vortec 454c. 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. These 454 7.4L engines tend to respond pretty well to camshaft changes with good grinds that are designed to produce low and mid-range rpm torque increases. This camshaft provides more lift and longer duration using the 10-12 Manifold vacuum. Thousands of satisfied customers have reported fuel economy increases as well as less transmission downshifting because of the increased horsepower and torque. . It specs out at 265 HP@4500 RPM and 340 ft/lbs of torque@3500 RPM. The stock injectors are fine for our performance tuning. TQ with those modifications done. 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. Thank you for any information you could give me. It is bone stock except for tow mirrors and Kodiak door handles on all 4. We'll send you the most interesting Street Muscle articles, news, car features, and videos every week. You can pretty easily get 400+ horses out of that thing and it be streetable. Even so, this engine was built primarily to provide huge towing power for CAFE-standard exempt vehicles, so there remains some room for improvement. Cats have been removed as well as smog pump. My next upgrade is going to be exhaust. That just won't do. Does this computer hav egr delete programmed into it. high flow intake elbow, filter and MAF We can tune it if you can build it :). Feel free to call me with your vin # handy if you would like to get your order in. 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/. Yes, as long as it is a "J" (8th digit of the VIN) Vortec 7.4L, we can tune it. 1996 K3500 454 (7.4L) | Off Roading Forums The Vortec 7400 was based on Chevrolets 1995 7.4-liter 454-cubic inch V8 big block, which produced 230 horsepower. 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. Oil collects on the crankshaft counterweights, adding weight to the rotating assembly (crankshaft, rods and pistons), reducing horsepower through parasitic drag. Both Vortec 7400 heads (the '98-'01 12560241 and the '96-'01 10141279) have about 100cc chambers. Dedicated to making your Chevy Truck bad***. Is it possible to get the newer 0411 with your tune for my truck. Thanks, WILL THE 2000 1 TON DULLY I HAVE STILL PASS CAL SMOG WITH THIS TUNE UP EMC. 1014127996-upoval..CLOSED.."Vortec 7400", 100cc chambers Your email address will not be published. Set of 8 1996 - 2000 GMC Chevy 7.4L 454cid Vortec Bosch 4 Hole Upgrade It is a redesigned Chevrolet Big-Block engine and was introduced with the 2001 full-size pickup trucks. Most generic tuners only change very basic parameters within the computer, whereas UltraPower Tuning changes approximately 400 parameters including both engine AND transmission settings. Just wondering because Id buy one of those as well. Free shipping. They left all the original parts in place like the two-barrel carburetor and dilapidated ignition system. But don't despair. Free shipping for many products! The state of California requires that this warning be posted for people purchasing products that reside in California. Thinner oil drags less on internal engine parts, helping the engine to spin more freely and run more efficiently. PART NO. It can be done fairly cheap , power for days and 15-20mpg, I repeat. 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 ?? Yes you are correct that there is torque management which "pulls" back power when taking off from a stop. It was bone stock 2x4 extended cab dually. 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. Sorry I dont have the VIN, the truck is not local, I have a 1998 2500 7.4 Vortec GMC Suburban. 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. The budget portion of the equation came from a 7.4L Gen VI big-block Chevy straight out of the local wrecking yard. Vehicle Monitoring and data-logging like no other! 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. It may not display this or other websites correctly. We have no issues with tuning a higher mileage engine as long as it is in good running condition. Thank you. Buy your Big Autoparts Ignition Distributor Set DR474 DR331 at Amazon! Gains will be on par with what we achieve with the RV's so it will very well suited for towing. Also the torque management. The tuning alone will be the single biggest change you can make to improve power and throttle response. With our tuning, peak horsepower is at about 3500 RPM and peak torque is about 2500 RPM. Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. Thank you. I'm sorry, we can't tune anything prior to 1996 model year. The batteries are fully charged and there is 12 volts to the distributor. Only tow rigs I have used to pull my Jeep with was this truck and my DD Driver 5.3 Tahoe. cam with matching torque converter and headers would be easy. Richard Rowe has been writing professionally since 2007, specializing in automotive topics. I called Banks Power last week to try and find out what they recommend. My car is GMC pick-up 7.4L 1998. it is manual transmission. Howards, Hydraulic Roller Camshaft, Chev BB Gen 6 454-502, GM, Chev BB Billet Steel Hyd. For GM vehicles, the Vortec variant increased power by 60 horses. Vortech supplied a pulley combination that included an 80-tooth crank pulley and 32-tooth blower pulley which provided a drive ratio of 2.5:1. These fit: 1966-1998 Chevrolet & GMC 6.0L, 1970-2000 Chevrolet, GMC, Pontiac & Mercruiser Marine 7.4L 454, 2001-2009 Chevrolet & GMC 8.1L , Also fits Mercury Marine Big Block 7.4L, 8.1L & 8.2L Engines. It's a nice cam for a 454 big block chevy engine that runs with 1500-6500 RPM Range. 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 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. 98 Single Rear Wheel 3500 7.4 Vortec. 496 MAG Performance Parts Performance Applications Chevy / GM Trucks 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. The terms ECM, PCM, and VCM are all used to describe the engine computer by various manufacturers, yours is located above the radiator . The only weak link is the peanut port factory heads and the sprinkler style fuel injection. If you send your ECM in, we can make the necessary adjustments you are requesting. The vin is for a 2004 gmc 1500 with a 5.3 vortec. If you had the proper tuning software, you could tune it yourself later. I am in a non emissions state My 98 GMC K2500 L29 7.4 litre has 2.5" true dual exhaust with pro Flowmax mufflers an X-Pipe, cat delete but still has both upstream and both downstream o2 sensors. I'm is Arizona and I'm planning a trip this month after Bonneville, to Aberdeen, home town, and Centralia, still have relatives there. Buy in monthly payments with Affirm on orders over $50. BBK Performance Parts 1710-XC GM VORTEC 305/350/454 80MM POWER PLUS THROTTLE BOD. . You can source the 454 HO directly from Chevrolet. I have a uhaul topkick with the 7.4. It is located on top of the radiator support and has 4 connectors going into the back of it. Truck is stock otherwise and runs good just looking for more out of it. Then, in 2001, GM dropped the 7400 and 454 combination in favor of the final powerful big block, the 8100 496-cubic inch engine with 340 horsepower at 4,200 rpm and 455 foot-pounds of torque at 3,200 rpm. Learn more. My question is that I have a 1998 7.4 parts truck. 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? Gains with the modifications you have done would be around 45 HP/ 45 TQ. And performance tune? 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? Engineered specifically compatible with General Motors Vortec V8 engines,specifically compatible with General Motors Vortec V8 engines,Offering the quality,reliability,durability. We can do the tune now with the Banks kit taken into consideration for down the road. I have Bosch Gen III injectors; Volant Air intake; and 3 exhaust. Can I reprogram on the fly as conditions change and performance needs warrant a change?? Naturally, the truck-based 454s were tuned for torque, so having nearly 500 pound-feet wasnt a big surprise. 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. Heads, intake and headers would definitely wake it up. 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. If you would like to place your order feel free to give me a call at 800-417-4559. To allow the motor to rev cleanly to 6,000 rpm under boost, the cam upgrade was teamed with a new set of beehive valve springs. 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. If you don't mind a "dirty" PCM case then we can take care of an order for you. 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. Truck runs great doesnt miss or anything just seems to not really have any power at all in 1st gear and alittle more in second gear. Please just leave in the order comments your requests to be done. I have a few questions so bear with me here. Reading some of your responses I came across one with regards to a 1996. 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. As long as you don't have any emission systems removed, you will pass without any issues. Vortec 8100 8.1L Chevy GM Performance Parts - GEN 7 Big Block - 496MAG The 4300 was GMs first Vortec-engine V6, released in 1986 and designed for trucks. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. I am upgrading the fuel injectors with the new Bosch III's and the plugs and wires. We use cookies to ensure that we give you the best experience on our website. Although Chevrolet does not explicitly recommend it, because a full synthetic is so slippery, you can use a lighter weight oil without risk of excessive engine wear. I just bought this 97 suburban 4wd with the bbc. There are a lot of variables that play into the exact gains we can achieve but I would say somewhere around 45-50 HP and 60 Ft Lb. Our tuning is based off of extensive dyno testing of RV's, and while results may vary, our gains are generally higher than others due to our expertise in the tuning of the L29 7.4L.