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Without going into the engine, they make a supercharger kit for it, I know whipple use to. 454 L29 Power Upgrade. We are not able to assist in providing this PCM. To others, the 7.4 Vortec 454 big-block was the perfect engine at the wrong time. 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. 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!). Would we still get the good price when you get more control modules in stock? Hot Rod And remember, thats all without touching the bottom end. You can definitely hold on to your PCM, that is not an issue. Buy your ELGIN Industries HL-7003S Hydraulic Roller Valve Lifters set at Amazon. No videos but your ECM is fairly easy to identify and replace. As I understand it I do not have the newer 0411 ECM and these have better processing power but need to be repinned. That being said, the threads on the net are pretty old. UltraPower GM / Workhorse 7.4L (454) Custom Tuning - Ultra RV Products Vortech Superchargers BBK is your Number One Aftermarket Performance Brand in the USA - American Designed and Built . And what is the final cost of your ECM. Yes, we can tune your ECM. I heard these trucks have a torque management system does this computer give my truck back all its power? I have a 2000 OBS Chevy quad cab with a 454 Vortec. 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. Are the tunes generic or do you change different things for different people? The heads, pistons, and intake are stock. 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. 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! 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. Only a set of dyno headers and an electric water pump were different. Free shipping. The peak numbers jumped from 791 hp and 713 lb-ft with no intercooler to 847 hp and 761 lb-ft with the intercooler. 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. The bill: $3,699.96 for all but the carb. I list that this RV was originally equipped with a 4.63 rear gear ratio and a tire size of 225/70R19.5. We tune the original black box PCM but do not do the 411 swap. Vortec 8100 8.1L Chevy GM Performance Parts - GEN 7 Big Block - 496MAG In an effort to further drop the inlet air temps, we installed a makeshift air-to-water intercooler. If so, is that the unit that sits above the radiator of a 2000 Itasca Suncruiser V32 w/ L29 7.4l (454ci) Vortec? 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. FULL RESULTS-GEN 5 454 UPGRADE-STOCK PEANUT PORT HEADS. A restrictive or clogged air filter will force the engine to work harder to breathe, which makes it less efficient. It won't hurt anything to run like that. Best, least expensive way to get more power out of this engine is with our custom tune. Hello! Eric, we can program for EGR delete, cost would be $ 495.00 and would also include the performance tune . Maybe I need to go by the dealer and test drive a diesel or another gasser so I have a comparison. Our typical turn around time is 2-3 business days. As long as you don't have any emission systems removed, you will pass without any issues. You may also like. We can also take care of the TQ management for you. 7.4 Liter Vortec Info | GMC Truck Forum 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. Some of which are going with an upgraded ignition, headers, removing the cats and having the computer flashed to shut down the secondary O2 sensors. 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. Also I have Thorley tri Y hearers on mine will that effect the tune? Yes, you can pay the $100 up front core charge and be refunded when you send your original back to us. Right now I have a CAI, 2" full length headers, 3" dual exhaust and EGR delete. Jump to Latest Follow . Its 567 horsepower of usable, reliable, fun power that anybody on a budget can build. The Official Vortec 454 Info thread - GMT400 Having tried the things you already have, I am pretty confident the issue is the PCM. 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? The cooler charge air (plus tubing length and bends) dropped the peak boost pressure from 19.1 psi down to 17.7 psi. Or if I pay to send in, is the return shipping included in the $495? thanks, Hey i have a 1997 chevy k2500 7.4 manual nv4500 trans 3.73 engine bone stock with 45,678 on rebuild with a working good ecm is tunning a question if so how much $. Yes you are correct that there is torque management which "pulls" back power when taking off from a stop. After the normally aspirated testing, we replaced the 750 Holley with a dedicated blow-through 850 Holley carburetor from Carb Solutions Unlimited (CSU) and installed the Vortech supercharger kit. How To Add 70 Percent More Power to A Chevy 454 V-8. Painless Performance 60211 Standard Length MPFI Harness for 1996-2000 GM Vortec 7.4L V8, Innovative Performance Chip/Power Programmer, Big Autoparts Ignition Distributor Set DR474 DR331, ELGIN Industries HL-7003S Hydraulic Roller Valve Lifters set, Painless fuel injection wiring utilizes all new TXL wire, OEM fitment connectors and grouped harness breakouts making for an easy install and saving you from using old re-worked wiring; Machine crimped terminals match OE quality. It is a redesigned Chevrolet Big-Block engine and was introduced with the 2001 full-size pickup trucks. 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. 454 L29 Power Upgrade | Hot Rod Forum If powertrain performance projects and hardcore technical content are your interest, Power & Performance News is the publication designed for you. 5. I've installed hypertech power programmer, lower thermostat, gale banks torque tube headers and full exhaust, with hi-flow catalytic converters, shift-kit for tranny and larger external cooler. I installed a K&N replacement are filter in the stock air box. Does this computer hav egr delete programmed into it. Vehicle Monitoring and data-logging like no other! Engine is in stock configuration with no upgrades. I recently ordered an ecm for a 7.4 vortec and was very impressed. I've made several performance upgrades myself, but are always looking for something better. See listing details. 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 1970 Chevrolet 454 was the most powerful with outputs of 360 and 450 horsepower from the LS5 and LS6, respectively. I know they were installed in trucks from 96- 00?. 1997 gmc 3500 cc dually. Alright Jay! 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? My car is GMC pick-up 7.4L 1998. it is manual transmission. 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. Cats have been removed as well as smog pump. It was also noted to have more power for gasoline engines. Do a 12 swap and be done. With the intercooler assembly in place, we once again ran the blown big block in anger with amazing results. Pindar You can pretty easily get 400+ horses out of that thing and it be streetable. The tuning alone will be the single biggest change you can make to improve power and throttle response. The 7400 was essentially the same big block 454 that powered Chevy through the muscle car years, but with improved cylinder heads and a hydraulic roller camshaft, it was far more efficient than the old LS6 could ever hope to be. I have now disassembled the entire engine (except the crank and pistons) to check that everything looks good, remove all the dirt and grease and to prepare it for a rebuild. These modifications will help to generate more horsepower without adversely affecting fuel efficiency, which will ultimately increase net mileage. The great thing about using a blow-though carburetor combination is the intercooling effect you get from the introduction of fuel. Gains with the modifications you have done would be around 45 HP/ 45 TQ. 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. 2023 Power Automedia. 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'm sorry, we can't tune anything prior to 1996 model year. 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. . They also installed roller lifters, heavy springs and chain/gears. We set it for the best performance in all conditions, it is not user adjustable. Any thoughts from you technical guys? 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. $199.95. Chevrolets Vortec 454 was a modern-day evolution of the firms most famous big block. It went through different upgrades over the years finally ending with the 454 Vortek which stopped production in 2001. Check if this part fits . 3. This thing is weak as water. A stock 12v ain't got **** on a BBC. Motorhome Performance Parts and RV Upgrades - BanksPower 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. Don't worry about what a camshaft may produce at 4000-5000 rpms in truck engines like this - YOU DON"T DRIVE THERE! If you don't mind a "dirty" PCM case then we can take care of an order for you. 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. I have a 1996 Winnebago with a P30 chassis and a 454 75,000 miles and runs great. After installed Ultrapower GM/ Workhorse 1998 7.4l Vortec 454c. Thank you. It's a nice cam for a 454 big block chevy engine that runs with 1500-6500 RPM Range. The Gray, the green with white strip and the black test grounded. We also took the liberty of installing a Race-Port blow-off valve from Turbo Smart. Seems like it's lacking power towing my boat. Body Diameter: 16 mm. It is $495 if your sending your core/pcm in first. As you can tell, it doesn't deliver much. 4 Bolt Main GM Factory Vortec, Edelbrock's Performer Multi-Point EFI. The 7.4 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 LS6 could ever hope for. They have a high strength carbon steel housing and a high performance rolled seam that exceeds OEM pressure requirements. Stronger shift points for towing and power. 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). If I send in a functional pcm for my Suburban mentioned in last question whats the average turn around for it? Do you offer anything for the 5.3? Common Problems with Chevy 454 Vortec (Explained!) It is unlikely that the Vortec 454 accessories will clear the hood. Is there any way I could send you that one as a core in return for one to work in my 2000? Is the Vehicle Control Module an ECM by another name? Warmed up at idle the gauge is reading 1200RPM then put it into drive holding the brake and its reading about 1000RPM.