Yes, we can tune your L21 for similar gains as with the L29. It gets you an EGR blockoff plate for the Vortec 4.3/305/350 engines. 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. It is a re-programmed ECM, either you send yours in or we send you one on a core exchange. After configuring a discharge tube and adding some race fuel, we slowly supplied boost to the boneyard big block. I plan on the injector and ignition work done in march. Thanks. 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. This is only 1 of the many changes that we make with our programming to achieve great power gains. The exhaust does not have CATS with dual to the muffler and single exit tailpipe. Yes that would be fine, you would just need to call in to our service department and schedule a date :). If you continue to use this site we will assume that you are happy with it. Check if this part fits . The previous owner had the engine rebuilt in 2012 and tells me they installed an RV cam but I am not sure which one. I just purchased your UltraPower GM / Workhorse 1998-2000 7.4L Vortec (454) Custom Tuning. The vin is for a 2004 gmc 1500 with a 5.3 vortec. 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. It is $495 if your sending your core/pcm in first. What type of gains could I expect with a tune for this? Prices increase after 2/28. Mark McNabb was a contributor at TopSpeed from 2013 to 2018. 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 2000 OBS Chevy quad cab with a 454 Vortec. Always a big complaint with 454 TBI trucks. However, this engine was intended to provide significant towing power for CAFE-exempt vehicles, so there is still room for improvement. O-rings: Top and bottom, 14.5 mm - Viton. He eventually figured it out. Full Forum Listing. 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. Richard Rowe has been writing professionally since 2007, specializing in automotive topics. Edlebrok performance heads with factory Combustion chamber size 100-110cc, valves set for .700 lift, I-2.190 E-1.880, 3/8" guideplates : http://www.summitracing.com/parts/EDL-60499/ GM Vortec EGR blockoff plate p/n is 12554606. Learn more. 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? 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. In 2001, production of the 7400 line was discontinued. Naturally, the truck-based 454s. 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 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. 2023 Power Automedia. Yes, we can resolve your issues. Any thoughts from you technical guys? my ecm has to be replaced. I'm saving up for the banks power pack system. The Chevrolet 454s of the 1970s were the most powerful, with the LS5 producing approximately 360 horsepower and the LS6 generating around 450 horsepower. 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. Roller Lifters 5. 90 and older is particularly bad and that is largely due to NO OVERDRIVE. 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? Now, that poses the question: what would you shoehorn this big-block Chevy into? Pace Performance Products in Ohio put together a decent upgrade. Oil collects on the crankshaft counterweights, adding weight to the rotating assembly (crankshaft, rods and pistons), reducing horsepower through parasitic drag. I'm interested in the available upgrades for the vortec 454. Buy your Painless Performance 60211 Standard Length MPFI Harness for 1996-2000 GM Vortec 7.4L V8 at Amazon! 7.3 is 250-275/505-525 stock. Et si je devrai faire recalibrer mon ecm? 1997 gmc 3500 cc dually. $119.95. In our quest to locate a suitable 454, a typical rip to the wrecking yard revealed at least three of the four available big-block combinations. This engine has two valves per cylinder and features multi-port fuel injection. So I have a 98 K3500 with the 7.4L and I use it mainly for hauling, but I have began to daily it. Apr 9, 2008 #4 7 70SSman Veteran Member Aug 11, 2005 134 Amston, CT, USA 100$ with low miles. We wanted to make sure the air/fuel and timing curves were spot on before running the supercharged monstrosity in anger. Yes, we could accept the PCM from your '98 as the core. 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 However, Chevy still offers the 454 big block V8 as a crate engine. 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. no. We do not, however, have core PCM's for this engine so you would have to send your PCM in for the flash. Is it not the same motor from 96 to 2001. The cooler charge air (plus tubing length and bends) dropped the peak boost pressure from 19.1 psi down to 17.7 psi. a good set of headers help to. Mfg Performance Parts www.straubtechnologies.com www.distributorgears.com Buy in monthly payments with Affirm on orders over $50. This modification won't be cheap or easy to install, but will eventually pay for itself if you do a lot of towing or drive a lot of miles. 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. 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. 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/. 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. Just wondering because Id buy one of those as well. . CAN YOU REALLY MAKE DECENT POWER WITH A SET OF PEANUT PORT BBC HEADS?. Cats have been removed as well as smog pump. Orders placed on the weekend or after cutoff on Friday, and orders placed on select holidaysareprocessed on thenext business day. At the relay the Orange wire is hot with 12 volts continually. Free shipping. I heard these trucks have a torque management system does this computer give my truck back all its power? Reference core exchange, what is the time limit for you to receive the exchange? We tune the original black box PCM but do not do the 411 swap. Their high performance cellulose glass media traps contaminants such as rust, dirt, scale and other foreign materials. Also the torque management. $399.99. Buy in monthly . And i was wondering what benefits will i see with my 454 i have a new jasper motor with upgraded injectors and full exhaust. GAS MILEAGE. 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*. 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. Banks iDash: SuperGauge & DataMonster. 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. You will gain approximately 35-40 horsepower and 45 lb-ft torque. Dollar for Dollar, it is highly unlikely that the $2400 for a full blown Banks Power Package would yield the same cost/benefit as say the addition of the UltraPower GM / Workhorse 7.4L (454) Custom Tuning module. When taken together, this fairly inexpensive approach can be good for noticeable gains in fuel economy. Install a high flow air filter and cold air induction intake. From my experience, the HyperTech programmer for those engines is pretty generic and does not make very many changes in the programming. 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My goal is to improve torque and trans efficiency then MPG. 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. I'm is Arizona and I'm planning a trip this month after Bonneville, to Aberdeen, home town, and Centralia, still have relatives there. That just won't do. 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". Configured with our pulley combination, the YSI spit out a peak boost pressure of 19.1 psi where the boosted big block produced 791 hp and 713 lb-ft of torque. 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. I am doing a full engine swap from a damaged motorhome to my older motorhome. 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. Change to a synthetic oil that is light-weight. . We appreciate it but we only specialize in the big block engines. A cold air induction setup will feed the engine cooler and more oxygen-dense air. 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? As you can tell, it doesn't deliver much. I am considering your tune for my motorhome. 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. Will the UltraPower tune, give me the "best bang for my buck" performance increase? It will be plug and play. Alright Jay! That model of 454 is alot diffrent then gen 1..It wont take a normal cam and theres some other diffrences that kinda limit what can be done to it.im sure someone will chime in with specifics Yes, it's a OE roller camshaft block and 1 piece gasket crank. I've made several performance upgrades myself, but are always looking for something better. Also, is shipping included both ways? He could even be found working on tractors or hay bailers while on vacation at his uncles farm. For a better experience, please enable JavaScript in your browser before proceeding. Yes, as long as it is a "J" (8th digit of the VIN) Vortec 7.4L, we can tune it. The tire are one size larger than stock to the speedometer is off a little. I bought this truck brand new. We can send a pre-programmed ECU on core exchange. We gain on average 45-50 horsepower and 50 ft. lb. 7.4 chevy engine in georgia boy pursuit motorhome. 5. 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). 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. And performance tune? It was known as the Vortec 7.4 (7400, Regular Production Option designation L29) in North America and across other markets. what features will i gain with this new unit. 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. 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. Yes, all gains listed are with 87 octane gas. Don't know how tuning would work. I have a 2000 C3500 with the 454/L29 and auto trans. 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? Can you reprogram and net me the same HP & TQ numbers as the L29? 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. But don't despair. Whats the stock numbers on a Vortec 454? The batteries are fully charged and there is 12 volts to the distributor. It is located on top of the radiator support and has 4 connectors going into the back of it. I just bought this 97 suburban 4wd with the bbc. Is it actually running at that RPM or just showing that? Whats left, though, is a 454 cubic-inch big-block Chevy with huge potential. Thanks, WILL THE 2000 1 TON DULLY I HAVE STILL PASS CAL SMOG WITH THIS TUNE UP EMC. $360.56. Thanks. The ignition timing was dropped to 21 degrees and after adding a few jets to the carburetor, we were rewarded with some serious power. The Gray, the green with white strip and the black test grounded. I would like to get the o2 delete. A cold air induction setup will feed the engine cooler and more oxygen-dense air. A few weeks ago I bought a very low milage 454 Gen. VI L29 Vortec engine with hydraulic roller. Yes, we can do that. 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. I have a 1996 Winnebago with a P30 chassis and a 454 75,000 miles and runs great. That said, the main internal differences between the L29 and L21 is that the L21 has forged pistons and crankshaft. If you send your ECM in, we can make the necessary adjustments you are requesting. The upgraded Vortec 7400 is a 7.4L V8 OHV 16V-volt FI engine. 800-417-4559 Jay, https://www.ultrarvproducts.com/UltraPower-GM-Workhorse-7.4L-(454)-Custom-Tuning. I won't change the exhaust or add a ring eating K&N. Body Diameter: 16 mm. Solenoid resistance: 12.5 Ohms. Hot Rod decided to bolt up some typical speed parts. Is this doable? I sprayed starter fluid in the tbi and it fired up for a few second. cam with matching torque converter and headers would be easy. All rights reserved. No videos but your ECM is fairly easy to identify and replace. GMC 7.4L/454 JET Performance Parts and Accessories Brand: JET Performance Make: GMC Engine Size: 7.4L/454 Individual Parts Part Groups In-Store Pickup Results 1 - 25 of 117 25 Records Per Page Default Sort JET Performance Programmers 15024 Computer Programmer, Chevy, GMC/Cadillac, Fullsize Pickup/SUV, 4.3L/5.0L/5.7L/7.4L, V6/V8, Each Yes, you will still pass emissions as long as you don't tamper with the existing emissions systems. A restrictive or clogged air filter will force the engine to work harder to breathe, which makes it less efficient. PART NO. As long as the engine is well maintained, reliability is not affected. After installed Ultrapower GM/ Workhorse 1998 7.4l Vortec 454c. Chevrolet Performance's 454 HO crate engine is a Big-Block bargain - an affordable engine with performance specs that will make you think it's 1970 all over again. I like my shift points where they are. Also I have Thorley tri Y hearers on mine will that effect the tune? Make use of long-tube headers (exhaust manifolds) and an aftermarket exhaust system. We are currently out of clean/painted cases for the PCM's. 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. If they were cheap enough, sure. The General Motors 7400 is the name given to a 7.4-liter Vortec engine produced by GM from 1996 until 2001 as a truck engine. These modifications will improve net mileage without sacrificing power, resulting in better overall mpg. Sorry I dont have the VIN, the truck is not local, I have a 1998 2500 7.4 Vortec GMC Suburban. 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. 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. Is the Vehicle Control Module an ECM by another name? Seems like it's lacking power towing my boat. We've had a lot of issues with 1996 & 1997 PCM's so for the moment we are not tuning those. I have a 1998 Winnebago Brave on a p30 chassis with the 7.4 with a Banks Power Pack. Is there any way I could send you that one as a core in return for one to work in my 2000? It is bone stock except for tow mirrors and Kodiak door handles on all 4. The most important changes that are made have to do with spark advance, fueling, transmission shifting and torque management settings. Technical Specifications: No filter cleaning required for up to 100,000 miles. 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. With our tuning, peak horsepower is at about 3500 RPM and peak torque is about 2500 RPM. Typical turn around is 3-4 days, sometimes quicker. The main improvements will be improved shifting and overall more torque to pull hills. Based on experience, we have had good results with Comp Cams 212/218 hydraulic roller camshaft. We can also adjust your speedometer to be correct. Yes - We can definitely take advantage of the current modifications done to the truck and really help it out. You are using an out of date browser. Since the cat removal shift points have been wonky. You would see a nice gain in power, on your 1997 we generally pick up about 30 horsepower and 35 lb-ft torque. It specs out at 265 HP@4500 RPM and 340 ft/lbs of torque@3500 RPM. Yes, it definitely will. TQ with those modifications done. 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. I dont have the 2000 VIN only the VIN from my 1995. (454 used only MAP) 2. Yes, we can tune your engine for more power, doesn't matter what type of transmission. Give me some idea as to what this product does exactly, and how I will benefit from spending $$ on it. 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. 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. The Vortec 7400 was based on Chevrolets 1995 7.4-liter 454-cubic inch V8 big block, which produced 230 horsepower. I was interested in your tune for this engine and was wondering what your best guess on the horse power / toque gains would be. Its amazing what some bolt-on parts can do! Is this enough information to create a tune or will you need more information? The results: 567 horsepower and 537 pound-feet of torque on 89-octane pump gas! There was plenty of power left in the YSI, but at 847 hp we couldnt help but be amazed at the extra strength GM put into the design of their 290-hp big block. 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. Some differences are: 1. For this test, the motor was configured with an Edelbrock RPM Air Gap intake and Holley 750 carburetor. You might be able to run an L29 cam, but you will need to consult an engine 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. Fuel pump doesn't run. Why a motorhome? Jump to Latest Follow . Only tow rigs I have used to pull my Jeep with was this truck and my DD Driver 5.3 Tahoe. 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. Howards, Hydraulic Roller Camshaft, Chev BB Gen 6 454-502, GM, Chev BB Billet Steel Hyd. Chevrolet Performance 10141280 Part Number: 809-10141280 Chevrolet Performance L29 Vortec Cast Iron Cylinder Head L29 Vortec Cast Iron Cylinder Head 1991-2000 Big Block Chevy Gen V/VI Engines Only Bare Head Sold Individually View Details $756.99 Ships on 03/02/23 FREE Shipping Lowest Price Guarantee Add To Cart Buy your K&N PF-1000 Fuel Filter at Amazon! This is a lie. Are the tunes generic or do you change different things for different people? Feel free to call me with your vin # handy if you would like to get your order in. youll have to stick to a torque cam because of the computor needs vacuum (speed density) headers will help greatly. Thank you. Can you tune my new 2000 ECM and will it work without the original key and ignition harness. Roller Cam, .483 Lift . A/T Flywheel, Hedman TEMS headers, and all the other good stuff that goes with a long block. You can definitely hold on to your PCM, that is not an issue. This engine series was utilized on Chevrolet and GMC large truck models such as the Suburban from 1996 through 2001. I have a 1996 Suburban K2500 with the L29 engine and 4l80 trans. "SE" Special Edition Tuning Kit For MerCruiser 454 & 502 Magnum MPI Engines. 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. Thanks. 7.4 Vortec Vehicles Applications The Vortec 7400 had two variants, the L29 and L21, and they appeared in the following vehicles: Pindar 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. When you buy a single component or a complete kit, like a camshaft, you must ensure that it is suitable for your car. The valve train is OHV with two valves per cylinder and multi-port fuel injection for fuel induction. To find out just how much the 30-year-old behemoth could muster, they took it to Westech Performances dyno room. Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube. I borrowed a friends TBI 454 dually to pull my blazer one time and it impressed the **** outta me. What is the difference between a Duramax 6.6-liter and a Chevrolet 7.4-liter engine? Programmers. Most generic tuners only change very basic parameters within the computer, whereas UltraPower Tuning changes approximately 400 parameters including both engine AND transmission settings. 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. It was utilized in the Chevrolet Silverado, GMC Sierra, Chevrolet Suburban, and Chevrolet Express. We can accommodate your requests for the oxygen sensors, speedometer adjustment and increased HP/TQ. Originally Posted by PonyKiller87 Ok, sounds just like swapping over the 96-00 vortec 350 to the 0411 as far as the wiring goes. 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 ?? Also I dont have either downstream 02 sensors. If not can a non uhaul ecm be used (ie plugged into the current harness)? Chevrolet 7.4 Vortec was a modern-day improvement of the firms most legendary big block. I know they were installed in trucks from 96- 00?. Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. Yes we modify the shift patterns to hold the upper gears longer, your shift kit would not interfere or cause issues. Feb 1, 2016 #2 Jorge6.5 I'm Awesome Joined May 17, 2013 Messages 1,015 Reaction score 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. In addition to the powerful YSI supercharger, the kit included a cog-drive system to eliminate belt slippage under boost. 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! Is it possible to upgrade the ECM on my 1994 Fleetwood Southwind Storm 454 TBI w/4L80E trans? Been reading the net the last few days on power upgrades for my truck after reading the "best year diesel" thread on here. No where near diesel power my ass. way stronger than a stock 12v, 6.5, & 7.3 powerstroke by far!!!! Most ordersare shippedwithin 24 hours from the order date. The greater the power gains, the bigger the budget. The tuning is custom to each vehicle depending on calibrations, modifications and any special requests. Later i want to install the banks PPB 49070 package on this motorhome next year. I am upgrading the fuel injectors with the new Bosch III's and the plugs and wires. 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. I assume the module is a pre-programmed ECM chip that replaces the stock ECM chip. I am considering some performance upgrades to my 2000 Winnebago Brave with the 7.4 liter engine. 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. The 1993-or-so design FEAD has been shown the clear the factory hood. If you can supply me with your VIN and any part #'s that are on the ECM I can do some research. It debuted in 1970 as an upgrade of the 427 big-block V8 engine. If it does work what would do for pulling and climbing hills? Apr 10, 2008 #5 M MyBoTy Veteran Member 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. Great motor and runs strong with gobs of TQ. Steel Camshaft 4. The tune will definitely wake the truck up.