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 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. 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. 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. My question is that I have a 1998 7.4 parts truck. My next upgrade is going to be exhaust. To find out just how much the 30-year-old behemoth could muster, they took it to Westech Performances dyno room. 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. 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. Buy in monthly payments with Affirm on orders over $50. Prices increase after 2/28. Also I have Thorley tri Y hearers on mine will that effect the tune? As I understand it I do not have the newer 0411 ECM and these have better processing power but need to be repinned. 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. Can you tune my new 2000 ECM and will it work without the original key and ignition harness. It may or may not have a decal on the ECM depending on if they did a mail order tune or came in to our shop. The 4300 was GMs first Vortec-engine V6, released in 1986 and designed for trucks. Apr 10, 2008 #5 M MyBoTy Veteran Member 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. 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. It is a re-programmed ECM, either you send yours in or we send you one on a core exchange. Roller Lifters 5. Boost your horsepower, torque, throttle response and fuel economy with the advanced Innovative Performance Chip compatible with your Chevrolet Silverado 1500! Yes, you can pay the $100 up front core charge and be refunded when you send your original back to us. The UltraPower ECM performs very well on both stock engines and ones that have been upgraded with other modifications. what does this do at emission inspections?? Would this work on 1996 7.4L L29? Both Vortec 7400 heads (the '98-'01 12560241 and the '96-'01 10141279) have about 100cc chambers. Do you offer anything for the 5.3? Most ordersare shippedwithin 24 hours from the order date. We include a data recorder with the ECM for your to record engine data and send to us to verify all engine systems are running efficiently. Hot Rod decided to bolt up some typical speed parts. 2023 Power Automedia. 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. Maybe I need to go by the dealer and test drive a diesel or another gasser so I have a comparison. will your new part ecm work on this motorhome. Installed E3 spark plugs which seemed to help. Here is info from COMP Cams. Engine is in stock configuration with no upgrades. 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. The Gray, the green with white strip and the black test grounded. Any thoughts from you technical guys? It was utilized in the Chevrolet Silverado, GMC Sierra, Chevrolet Suburban, and Chevrolet Express. Do you have identifying marks on the ECU? Chevrolets Vortec 454 was a modern-day evolution of the firms most famous big block. Yes, you will still pass emissions as long as you don't tamper with the existing emissions systems. I am considering some performance upgrades to my 2000 Winnebago Brave with the 7.4 liter engine. my old part number on ecm is 16263494 on 1999 454. Vortex comes from the word vortex. The goal was to construct a fuel-efficient engine with an air-to-fuel combustion system that would eventually produce more power. Thanks, WILL THE 2000 1 TON DULLY I HAVE STILL PASS CAL SMOG WITH THIS TUNE UP EMC. All fuel injector specifications meet or exceed the manufacturer's specification standard. Thank you. Also how much horse power and torque do these motors have stock? TQ with those modifications done. Great motor and runs strong with gobs of TQ. Programmers. Buy your Painless Performance 60211 Standard Length MPFI Harness for 1996-2000 GM Vortec 7.4L V8 at Amazon! You can source the 454 HO directly from Chevrolet. Install an aftermarket windage tray in your engine. Thanks. 7.4 chevy engine in georgia boy pursuit motorhome. Hello! This thing is weak as water. "SE" Special Edition Tuning Kit For MerCruiser 454 & 502 Magnum MPI Engines. 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. Wiring is the same. How much can you get them for? That represents a 70-percent increase in horsepower. Please contact us directly to set that up at 800-417-4559. The same 290 horsepower that was standard for all GM cars in 1980 was maintained throughout the decade. As long as you don't have any emission systems removed, you will pass without any issues. 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. We will safeguard your e-mail and only send content you request. My question is what cam you would recommend for towing? 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. A stock 12v ain't got **** on a BBC. No where near diesel power my ass. way stronger than a stock 12v, 6.5, & 7.3 powerstroke by far!!!! I installed a K&N replacement are filter in the stock air box. Free shipping for many products! Reading some of your responses I came across one with regards to a 1996. The tire are one size larger than stock to the speedometer is off a little. Typical gains are 40-45 horsepower and 45-50 lb-ft torque, 4. I would like the biggest bang for the $. I have a 2000 7.4 with a bigger cam cold air kit dual exhaust better mass air flow senser and roller tip rockers can u tune that as well or do you just do stock stuff, I have a 99 k 3500 Chevy 1 ton with 454 5 speed.will your computer tune work in my truck and can I expect 40+hp gain? I am upgrading the fuel injectors with the new Bosch III's and the plugs and wires. oh, by the way, this is a low mileage engine, single owner and I have taken excellent care of this truck. I have a 2000 gmc k2500 with the l29 454. The guys over at Hot Rod magazine wanted to prove its possible to make big horsepower from a Chevrolet big-block V-8 lifted from a junk1986 motorhome. Oxygen sensor modifications can be done. I don't drive the truck daily so could send my ECM to you for tuning My question is would this eliminate the SES light for the cats P0430/20 and air pump ?? There is a small red wire that has never been connected to anything. Please see our shipping terms for more information. We do not go further back than 1996 (OBD2) modules, sorry. K&N Performance Fuel Filters are built for high flow rates and capacity while they provide outstanding filtration. I am ready to pull the trigger if I continue to run 87 octane fuel. Its amazing what some bolt-on parts can do! Despite the impressive cooling powers of the carburetor, we were still concerned about the elevated charge temps going into the carburetor. So if I have your tune done what is the turn around time sending my PCM to you? Apr 9, 2008 #4 7 70SSman Veteran Member Aug 11, 2005 134 Amston, CT, USA 100$ with low miles. merci. I have a 2000 3500 454. They said they no longer support my RV and had no parts available. 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! And performance tune? I think I am going to swap on a good set of aftermarket heads and change out to an Edelbrock Pro Flo EFI. Free shipping for many products! Not sure if you have any other issues causing low power though because it should outperform the 5.7L, especially towing. FULL RESULTS-GEN 5 454 UPGRADE-STOCK PEANUT PORT HEADS. Is there anything to be gained within my parameters? The 1970 Chevrolet 454 was the most powerful with outputs of 360 and 450 horsepower from the LS5 and LS6, respectively. You are using an out of date browser. Topping the engine is a borrowed four-barrel Holley XP carburetor. 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? Gains with the modifications you have done would be around 45 HP/ 45 TQ. That said, the main internal differences between the L29 and L21 is that the L21 has forged pistons and crankshaft. 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. 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/. For more information, visit www.P65Warnings.ca.gov, NOTICE: Fororders outside of United States. 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. We use cookies to ensure that we give you the best experience on our website. So, I am contemplating upgrading this thing for more power, or selling and buying a Dmax. Oil tends to collect on the crankshaft counterweights, adding weight to the rotating assembly (crankshaft, rods and pistons) and reducing horsepower through parasitic drag. Following up from previous question, here is the VIN 1GDG6H1BXYJ907917 and #s off the ECM, 09384681, sev. It is quite a noticeable difference! Free shipping. Find many great new & used options and get the best deals for BBK Performance Parts 1710-XD GM VORTEC 305/350/454 80MM POWER PLUS THROTTLE BOD at the best online prices at eBay! If you want to send your PCM in that you know is functional, that is the best way to do it. Originally Posted by PonyKiller87 Ok, sounds just like swapping over the 96-00 vortec 350 to the 0411 as far as the wiring goes. 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. I know they were installed in trucks from 96- 00?. Does this computer hav egr delete programmed into it. 7.4 Vortec Specs Chevy based the 7.4 Vortec off their 454 big block engine, hence the name 454 Vortec. Whats left, though, is a 454 cubic-inch big-block Chevy with huge potential. 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. 1997 gmc 3500 cc dually. If you don't mind a "dirty" PCM case then we can take care of an order for you. The old camshaft came out, too, with a meatier hydraulic bump stick with 0.600 inches of lift taking its place. 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. Straight Port Cylinder Heads 6. The upgraded Vortec 7400 is a 7.4L V8 OHV 16V-volt FI engine. Have you plugged an OBD2 reader into the truck to see what it is displaying for RPM? It will be plug and play. Been reading the net the last few days on power upgrades for my truck after reading the "best year diesel" thread on here. Turn around time is 1-2 business days. The only way to know for certain would be to pull the ECM and send to us so we can read it out and check. 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). It was the same size as the outgoing 7.4 L V8, but got a boost in power and more towing capacity. 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. 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. 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? Anything that will help the performance. We are unaware of any cam upgrades specifically for the L21. Just worth mentioning. We can easily do this with the specs you provide. It is bone stock except for tow mirrors and Kodiak door handles on all 4. Jump to Latest Follow . Check if this part fits . 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. I plan on the injector and ignition work done in march. Their high performance cellulose glass media traps contaminants such as rust, dirt, scale and other foreign materials. Yes, it definitely will. 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. 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. Injector type: US-CAR, saturated. The peak numbers jumped from 791 hp and 713 lb-ft with no intercooler to 847 hp and 761 lb-ft with the intercooler. I'm saving up for the banks power pack system. 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.