454 vortec performance upgrades

2. Richard Rowe has been writing professionally since 2007, specializing in automotive topics. Explore Our Forums. It is a re-programmed ECM, either you send yours in or we send you one on a core exchange. Mostly people saying to try this and try that. Feb 1, 2016 #2 Jorge6.5 I'm Awesome Joined May 17, 2013 Messages 1,015 Reaction score . 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. Change to a synthetic oil that is light-weight. The Vortec 7400 was based on Chevrolets 1995 7.4-liter 454-cubic inch V8 big block, which produced 230 horsepower. You can definitely hold on to your PCM, that is not an issue. 1999 vortec 454 7.4 - HPTuners Installed E3 spark plugs which seemed to help. Pindar You claim 40-55hp gains is that something that I will notice drastically or is it more of a subtle power increase? oh, by the way, this is a low mileage engine, single owner and I have taken excellent care of this truck. UltraPower GM / Workhorse 7.4L (454) Custom Tuning - Brazel's RV The batteries are fully charged and there is 12 volts to the distributor. Most generic tuners only change very basic parameters within the computer, whereas UltraPower Tuning changes approximately 400 parameters including both engine AND transmission settings. This engine series was utilized on Chevrolet and GMC large truck models such as the Suburban from 1996 through 2001. Make use of long-tube headers (exhaust manifolds) and an aftermarket exhaust system. We modify this so that it is still "safe" but definitely wakes the truck up. In search of power, GM reverted to the big-block engine design, with a 454-cubic inch displacement. Right now I have a CAI, 2" full length headers, 3" dual exhaust and EGR delete. At times I get a dtc for bank 1 and 2 too rich. The issue with your tachometer would only be fixed if there is an actual issue with your PCM. 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. It was produced as a gas alternative to the new Duramax LB7 diesel, offering a high-torque gas engine capable of towing just about anything. 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. Cats have been removed as well as smog pump. Oct 25, 2004 Do you guys know anything about the L29 Vortec motor. Buy your ELGIN Industries HL-7003S Hydraulic Roller Valve Lifters set at Amazon. For GM vehicles, the Vortec variant increased power by 60 horses. I heard these trucks have a torque management system does this computer give my truck back all its power? We are currently waiting on more ECM's to come in to be able to provide them on exchange. It gets you an EGR blockoff plate for the Vortec 4.3/305/350 engines. The cooler charge air (plus tubing length and bends) dropped the peak boost pressure from 19.1 psi down to 17.7 psi. from your CUSTOM TUNING,ECM, J'ai l'intention d'amliorer l'ordinateur de mon VR, par un model ULTRAPOWER mais avant d'acheter, j'ai besoin de savoir quels fuel injecteurs seront le mieux adapts ( conomie et rendement ) avec le nouveau module? Only a set of dyno headers and an electric water pump were different. So, I am contemplating upgrading this thing for more power, or selling and buying a Dmax. But don't despair. Dec 18, 2007 . If product is incorrect for the provided VIN we will contact you to revise order. Reference core exchange, what is the time limit for you to receive the exchange? watch out for chips as they just bump the fuel curve. do you think I could get more power with your ecm re-program? I would like to get the o2 delete. 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. This 1-ton dually truck is used for hauling a large slide in camper and atv trailer. This is only 1 of the many changes that we make with our programming to achieve great power gains. 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*. what does this do at emission inspections?? It is a redesigned Chevrolet Big-Block engine and was introduced with the 2001 full-size pickup trucks. And a k and n filter. Reasons to buy: Hot Rod decided to bolt up some typical speed parts. 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. 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 will it improve my over all power? 1997 gmc 3500 cc dually. The Vortec enhancements simply allowed GM to pass smog at a higher RPM. These Chevy 454 Vortec engines made 290 horsepower and 410 lb-ft. Chevy 454 HO Crate Engine Vortec 7400 engines were the final version of the 454 used in production vehicles or trucks. 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. Just wondering because Id buy one of those as well. Also I have Thorley tri Y hearers on mine will that effect the tune? Chevy Performance BBC L29 Vortec Cast Iron Cylinder Head - JEGS We removed the factory EFI injection, and replaced it with simple carburetion. They have a high strength carbon steel housing and a high performance rolled seam that exceeds OEM pressure requirements. I have been watching lots of posts and things get carried away very quickly about getting big big hp. 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. Check for Availability: $349.95. 7.4 Vortec Specs Chevy based the 7.4 Vortec off their 454 big block engine, hence the name 454 Vortec. 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. 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. Engineered specifically compatible with General Motors Vortec V8 engines,specifically compatible with General Motors Vortec V8 engines,Offering the quality,reliability,durability. Is it actually running at that RPM or just showing that? If you continue to use this site we will assume that you are happy with it. Using 3.5-inch aluminum tubing from CXRacing, we configured the intercooler between the YSI supercharger and the blow-through carburetor bonnet. The Official Vortec 454 Info thread - GMT400 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. We immediately checked the latest 8.1L off the list due to lack of availability and parts cross over. Always a big complaint with 454 TBI trucks. We also took the liberty of installing a Race-Port blow-off valve from Turbo Smart. Anything that will help the performance. Chevrolet BB Gen 6 454-502, '96-'00 Camshafts at Competition Products! the Vortec 7400 (454) that came in that suburban is one hell of an engine, there are also many things you can do to get more mileage and power out of it. 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. Pace Performance Products in Ohio put together a decent upgrade. Thanks. I wish we could say for sure that you will be able to see a nice gain but we try not to over-promise on that. What are your recommendations?? How To Add 70 Percent More Power to A Chevy 454 V-8 - Top Speed This project will also let customers know if spendintg approx $2300 on all these upgrades is going to give them the results they need from their big block engines. I'm is Arizona and I'm planning a trip this month after Bonneville, to Aberdeen, home town, and Centralia, still have relatives there. Yes we modify the shift patterns to hold the upper gears longer, your shift kit would not interfere or cause issues. You are using an out of date browser. Do you offer anything for the 5.3? So, what are the most common problems with the Chevy 454 Vortec? When you buy a single component or a complete kit, like a camshaft, you must ensure that it is suitable for your car. Roller Lifters 5. Would you be able to tune this on a new computer so I can keep the original? Yes - We can definitely take advantage of the current modifications done to the truck and really help it out. Chevy Engine Kit - Chevy Stroker Kit, 454 Big Block, 454, 496 - Coast High All fuel injector specifications meet or exceed the manufacturer's specification standard. The 1993-or-so design FEAD has been shown the clear the factory hood. You can source the 454 HO directly from Chevrolet. Yes, we can tune your engine for more power, doesn't matter what type of transmission. The Muscle Automobile Period had come and gone before the 7400 series debuted. Following up from previous question, here is the VIN 1GDG6H1BXYJ907917 and #s off the ECM, 09384681, sev. 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. Check if this part fits . 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. It is unlikely that the Vortec 454 accessories will clear the hood. However, this engine was developed mostly for large towing ability for CAFE-exempt passenger cars, so there is still room for improvement. . L29 454 Vortec | Team Chevelle We can tune it if you can build it :). We use cookies to ensure that we give you the best experience on our website. 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. 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. I have the 411. Oil tends to collect on the crankshaft counterweights, adding weight to the rotating assembly (crankshaft, rods and pistons) and reducing horsepower through parasitic drag. 7.4 Vortec Vehicles Applications The Vortec 7400 had two variants, the L29 and L21, and they appeared in the following vehicles: If you can supply me with your VIN and any part #'s that are on the ECM I can do some research. The greater the power gains, the bigger the budget. The UltraPower ECM performs very well on both stock engines and ones that have been upgraded with other modifications. The stock injectors are fine for our performance tuning. 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. Precision Auto Injectors Genuine Delphi 12568155 12586557 GM Fuel Injectors Set of 6 2004-2007 GM 3.5L OHV. CAN YOU REALLY MAKE DECENT POWER WITH A SET OF PEANUT PORT BBC HEADS?. 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 I have a uhaul topkick with the 7.4. TQ with those modifications done. 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. Vortech Superchargers To others, the 7.4 Vortec 454 big-block was the perfect engine at the wrong time. 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. It was known as the Vortec 7.4 (7400, Regular Production Option designation L29) in North America and across other markets. The bill: $3,699.96 for all but the carb. I like my shift points where they are. 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? Technical Specifications: No filter cleaning required for up to 100,000 miles. During its five years on the market, the 7400 was employed in 26-foot U-Haul trucks for commercial purposes. 496 MAG Performance Parts Performance Applications Chevy / GM Trucks Injector type: US-CAR, saturated. Headers exhaust. We are unaware of any cam upgrades specifically for the L21. 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? performance, modifications, classifieds, troubleshooting, maintenance, and more! 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. 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! Yes, we could accept the PCM from your '98 as the core. Not sure if you have any other issues causing low power though because it should outperform the 5.7L, especially towing. I am considering some performance upgrades to my 2000 Winnebago Brave with the 7.4 liter engine. A restrictive or clogged air filter makes the engine work harder to breathe, which reduces efficiency. I have a 2000 GMC school bus with the L21 7400 motor. I think they were made before Chevy started using real tornados. Im interested to know if you change the shift points or anything like that cause I have a shift kit in the transmission already. Even so, this engine was built primarily to provide huge towing power for CAFE-standard exempt vehicles, so there remains some room for improvement. 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. Some differences are: 1. Is there any way I could send you that one as a core in return for one to work in my 2000? Even stock we see impressive gains but even more so with the Banks PowerPack installed. Thinner oils allow the internal engine components to spin more freely and effectively, which improves their function. The only weak link is the peanut port factory heads and the sprinkler style fuel injection. 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. Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. How to Make a Chevy 454 Vortec More Efficient | It Still Runs I replaced the relay to no avail. GM 7.4 Vortec Ultimate Engine Guide - Specs, Problems, Performance

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