A few weeks ago I bought a very low milage 454 Gen. VI L29 Vortec engine with hydraulic roller. . BBK Performance Parts 1710-XD GM VORTEC 305/350/454 80MM POWER PLUS THROTTLE BOD. I bought this truck brand new. To others, the 7.4 Vortec 454 big-block was the perfect engine at the wrong time. Purchase a Chevy 454 crate engine online from JEGS High Performance. I am certain we can get more power and overall better drivability with our tuning versus your current setup. Thanks for any help. Primary or Expansion Gauges And Upgrade Kits (52mm) For 2008+ OBDII CAN bus vehicles, Upgrading SIx-Gun, Economind, and SpeedBrake, or use with BBus Sensor Modules. Mar 20, 2011 #4 M MyBoTy Veteran Member Feb 9, 2002 1,567 Lubbock, Texas USA The budget portion of the equation came from a 7.4L Gen VI big-block Chevy straight out of the local wrecking yard. . The 454 Vortec is the last in a line of one of the most successful classic engines in GM history. Will the UltraPower tune, give me the "best bang for my buck" performance increase? 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. Very interested in this. I am considering some performance upgrades to my 2000 Winnebago Brave with the 7.4 liter engine. The engine displacement in liters is 7400, which is readily changed to 7.4 liters. Just need a working substitute, no enhancements really needed. Check the make, year, and model of your car to see if the VIN number is available. Temperature measurements taken before and after the carburetor revealed that the fuel cooling dropped the intake charge temperature from 235 degrees (before the carb) down to 120 degrees (after). 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. Change to a synthetic oil that is light-weight. My car is GMC pick-up 7.4L 1998. it is manual transmission. Performance. Chevy Engine Kit - Chevy Stroker Kit, 454 Big Block, 454, 496 - Coast High We do not go further back than 1996 (OBD2) modules, sorry. For this test, the motor was configured with an Edelbrock RPM Air Gap intake and Holley 750 carburetor. The heads, pistons, and intake are stock. The tuning is custom to each vehicle depending on calibrations, modifications and any special requests. Solenoid resistance: 12.5 Ohms. We are not able to assist in providing this PCM. Precision Auto Injectors Set of 8 Genuine OEM 1996-2000 GMC Chevy 7.4L 454CID Vortec Rochester Fuel Injectors. Are there any gains to be had by programing and adding headers to my truck? 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. 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. $199.95. How much will the customization cost me? For this one, I would want you to send your PCM into us to be done. 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. Mark McNabb was a contributor at TopSpeed from 2013 to 2018. Gains with the modifications you have done would be around 45 HP/ 45 TQ. How to Make a Chevy 454 Vortec More Efficient | It Still Runs Only tow rigs I have used to pull my Jeep with was this truck and my DD Driver 5.3 Tahoe. That represents a 70-percent increase in horsepower. Elgin Industries set of (16) Hydraulic Roller Valve Lifters compatible replacements for Big Block Chevy GMC & Pontiac engines. Build your own custom newsletter with the content you love from Street Muscle, directly to your inbox, absolutely FREE! The Muscle Automobile Period had come and gone before the 7400 series debuted. Reference core exchange, what is the time limit for you to receive the exchange? Yes, you can pay the $100 up front core charge and be refunded when you send your original back to us. It is a re-programmed ECM, either you send yours in or we send you one on a core exchange. The Vortec 7400 as you know lays down 290 HP and 410 LbFt of Torque. Use for stock replacement OEM original equipment. Yes, we can resolve your issues. That being said, the threads on the net are pretty old. Performance Street, great low to mid-range. Howards, Hydraulic Roller Camshaft, Chev BB Gen 6 454-502, GM, Chev BB Billet Steel Hyd. Chevy 454 Rebuild Kits for Complete Street Performance! Even so, this engine was built primarily to provide huge towing power for CAFE-standard exempt vehicles, so there remains some room for improvement. 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. The 4300 was GMs first Vortec-engine V6, released in 1986 and designed for trucks. We have a complete Banks Power System and Banks Air Flow. Pace Performance Products in Ohio put together a decent upgrade. Heads, intake and headers would definitely wake it up. $360.56. I plan on the injector and ignition work done in march. GM 7.4 Vortec Ultimate Engine Guide - Specs, Problems, Performance Cost would be $495. Anything that will help the performance. Thinner oil drags less on internal engine parts, helping the engine to spin more freely and run more efficiently. Any "recalibration" would require sending your ECM to us for programming changes. The tune will definitely wake the truck up. We would recommend speaking directly with a camshaft manufacturer to determine the best for your particular engine. Would the retuned ECM provide any performance gains above what are present now? I have a few questions so bear with me here. It won't hurt anything to run like that. 454 VORTEC UPGRADES | HardlineCrawlers Just make sure to include that information in the order comments and we can make that happen for you :). We can also take care of the TQ management for you. O-rings: Top and bottom, 14.5 mm - Viton. They left all the original parts in place like the two-barrel carburetor and dilapidated ignition system. Your vehicle is not compatible. It was not a good moment to debut a big cubic-inch big block designed for performance vehicles, but the Chevy 7.4 made an impact nonetheless. $399.99. 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. Oxygen sensor modifications can be done. We require the VIN so that we can pull up your vehicle's specific parameters and create a truly customized tune for your vehicle. HOW TO UPGRADE YOUR TBI PEANUT PORT 454 - YouTube My question is what cam you would recommend for towing? You can pretty easily get 400+ horses out of that thing and it be streetable. is this unit ready for plug and play. Install an aftermarket windage tray in your engine. 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. Growing up, Mark always had a mind for tinkering on random items throughout his home and dads garage, including a 1953 Ford Mainline and 1971 Corvette Stingray. After configuring a discharge tube and adding some race fuel, we slowly supplied boost to the boneyard big block. We wanted to make sure the air/fuel and timing curves were spot on before running the supercharged monstrosity in anger. We only specialize in the big block engines. The upgraded Vortec 7400 is a 7.4L V8 OHV 16V-volt FI engine. 7.4 Liter Vortec Info | GMC Truck Forum Other #s not sure what they are if theyre useful, 86DAFMM0017433PS, HDW # 16239740. The results: 567 horsepower and 537 pound-feet of torque on 89-octane pump gas! 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. After all, every horsepower lost to such "parasitic drag" is one less that won't be helping your truck move down the road. 800-417-4559 Jay, https://www.ultrarvproducts.com/UltraPower-GM-Workhorse-7.4L-(454)-Custom-Tuning. So, what are the most common problems with the Chevy 454 Vortec? 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! HotCars covers all things automotive: the latest auto news and informative reviews on the car, pickup truck and motorcycle industries. Warmed up at idle the gauge is reading 1200RPM then put it into drive holding the brake and its reading about 1000RPM. For a plain jane Sierra, not bad in my opinion. 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. K&N fuel injection performance kit. . Please contact us directly to set that up at 800-417-4559. Also how much horse power and torque do these motors have stock? All fuel injector specifications meet or exceed the manufacturer's specification standard. And what is the final cost of your ECM. Recommended 454 TBI modifications | TBI - harristuning.com Would this work on 1996 7.4L L29? Pindar If powertrain performance projects and hardcore technical content are your interest, Power & Performance News is the publication designed for you. The 1993-or-so design FEAD has been shown the clear the factory hood. BBK Performance Parts 1710-XC GM VORTEC 305/350/454 80MM POWER PLUS THROTTLE BOD. 7.4 Vortec Specs Chevy based the 7.4 Vortec off their 454 big block engine, hence the name 454 Vortec. I plan on a couple of cross country trips this summer before the Banks PPB install, so, should I wait for the tune until after the Banks install or do the tune this year? We can easily do this with the specs you provide. We've had a lot of issues with 1996 & 1997 PCM's so for the moment we are not tuning those. Whats the stock numbers on a Vortec 454? 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. my ecm has to be replaced. These modifications will help to generate more horsepower without adversely affecting fuel efficiency, which will ultimately increase net mileage. Our kits include camshaft, lifters, piston rings, pistons, both rod and main bearings, cam bearings, timing components, oil pump, frost plugs and gasket set, with an option to purchase a crankshaft as well. Also I have Thorley tri Y hearers on mine will that effect the tune? I wouldn't mind an EGR delete for the part throttle improvement and a cleaner intake, but mostly I would like to keep everything else functioning, I am looking for more torque below 3,000 rpms, ideally in the 1500-2500 range, because almost all of my driving is in that range. Gains will be on par with what we achieve with the RV's so it will very well suited for towing. torque so it will definitely be able to hold the upper gears better when hill climbing and have improved acceleration. Will this correct my RPM gauge issue? As long as the engine is well maintained, reliability is not affected. 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. Topping the engine is a borrowed four-barrel Holley XP carburetor. I'm saving up for the banks power pack system. The terms ECM, PCM, and VCM are all used to describe the engine computer by various manufacturers, yours is located above the radiator . Best, least expensive way to get more power out of this engine is with our custom tune. 7.3 is 250-275/505-525 stock. 7.4 and 8.1 vortec hp and tq ratings | Diesel Place 454 MK VI (vortec) | NastyZ28.com A/T Flywheel, Hedman TEMS headers, and all the other good stuff that goes with a long block. 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 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. 7.4 Vortec Vehicles Applications The Vortec 7400 had two variants, the L29 and L21, and they appeared in the following vehicles: 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. Yes that would be fine, you would just need to call in to our service department and schedule a date :). How much can you get them for? my old part number on ecm is 16263494 on 1999 454. Yes, all gains listed are with 87 octane gas. Vehicle Monitoring and data-logging like no other! Thousands of satisfied customers have reported fuel economy increases as well as less transmission downshifting because of the increased horsepower and torque. My goal is to improve torque and trans efficiency then MPG. The engine receives cooler, more oxygen-dense air through a chilly air induction system. I have a uhaul topkick with the 7.4. Hardin Marine - EFI Upgrade Kits I have a 2000 OBS Chevy quad cab with a 454 Vortec. The state of California requires that this warning be posted for people purchasing products that reside in California. We can tune stock or modified, not a problem. If I send in a functional pcm for my Suburban mentioned in last question whats the average turn around for it? 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. 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. After installed Ultrapower GM/ Workhorse 1998 7.4l Vortec 454c. I called Banks Power last week to try and find out what they recommend. You might be able to run an L29 cam, but you will need to consult an engine builder. Is the pcm that is used a 411? Unfortunately this is not something that we offer. Also the torque management. Can you guys tune that ecm? 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. 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. It is bone stock except for tow mirrors and Kodiak door handles on all 4. They seem to be similar to those used in your RV work. If you don't mind a "dirty" PCM case then we can take care of an order for you. Thank you for any information you could give me. It is an all-iron engine (block and heads . Learn more. We use the original black box PCM's. Probably cause no cats. I have a 1996 Suburban K2500 with the L29 engine and 4l80 trans. This cam is designed specifically for the TBI 350 small-block and specs at 194/214 degrees of duration at .050-inch tappet lift with .398/.442-inch lift. Weve seen a few 1996-1997 PCMs with this issue. The banks system will give you 70hp and 85lb-ft. 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. 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. The air filter is easily removed, cleaned, and reused. I'm sorry, we can't tune anything prior to 1996 model year. Turn around time is 1-2 business days. . As long as you don't have any emission systems removed, you will pass without any issues. I didnt see anything on the site but that doesnt mean I saw everything. 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. Using 3.5-inch aluminum tubing from CXRacing, we configured the intercooler between the YSI supercharger and the blow-through carburetor bonnet. Despite the impressive cooling powers of the carburetor, we were still concerned about the elevated charge temps going into the carburetor. Full Forum Listing. 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. Oct 25, 2004 Do you guys know anything about the L29 Vortec motor. 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). Do you folks know of cam upgrades along with tuning that would give power upgrades on a l21 with a manual transmission ? Dec 18, 2007 . Would you be able to tune this on a new computer so I can keep the original? 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. We tune the original black box PCM but do not do the 411 swap. The cooler charge air (plus tubing length and bends) dropped the peak boost pressure from 19.1 psi down to 17.7 psi. This is a lie. 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? I'm interested in the available upgrades for the vortec 454. CHEVROLET 7.4L/454 - Free Shipping on Orders Over $99 at Summit Racing Departments Restoration Stock Replacement Street Rod Shop Departments Air & Fuel Delivery Books/Videos/Software Brake Systems Chassis & Suspension Cooling & Heating Engines & Components Exhaust Exterior & Accessories Fasteners & Hardware Fittings & Hoses Gaskets & Seals This is perfect for an otherwise stock engine as the gains are the best bang for the buck by far. This thing is weak as water. FULL RESULTS-GEN 5 454 UPGRADE-STOCK PEANUT PORT HEADS. During its five years on the market, the 7400 was employed in 26-foot U-Haul trucks for commercial purposes. Buy your Chevrolet Performance 454 crate engine from JEGS High Performance today! what does this do at emission inspections?? 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. How To Add 70 Percent More Power to A Chevy 454 V-8. Does this computer hav egr delete programmed into it. We removed the factory EFI injection, and replaced it with simple carburetion. I have a 98 C-3500 dually with a Vortec 454. We can also adjust your speedometer to be correct. I have the 411. I fought this truck with the cats deleted and air pump disabled. If not can a non uhaul ecm be used (ie plugged into the current harness)? This 1-ton dually truck is used for hauling a large slide in camper and atv trailer. So I have a 98 K3500 with the 7.4L and I use it mainly for hauling, but I have began to daily it. 454 Vortec Reliability and Ownership Guide, Pre-Purchase Inspection: What to look out for, crate version of the 454 big block from Chevy, 1996-2000 Chevrolet/GMC C/K GMT-400 platform trucks 2500/3500, 1996-1999 Chevrolet Suburban 2500/GMC Suburban 2500, 1996-2000 Chevrolet Express ( & 1 ton versions), 19982001 Chevrolet Kodiak/GMC TopKick/Isuzu H-Series 4500 5500, Larger Fuel Injectors and Fuel Pump Regulator. If you had the proper tuning software, you could tune it yourself later. Mostly people saying to try this and try that. I read in earlier questions asked that you had stopped doing the earlier ones. Vortec 8100 8.1L Chevy GM Performance Parts - GEN 7 Big Block - 496MAG Originally Posted by PonyKiller87 Ok, sounds just like swapping over the 96-00 vortec 350 to the 0411 as far as the wiring goes. K&N Performance Fuel Filters are built for high flow rates and capacity while they provide outstanding filtration. 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. L29 454 Vortec | Team Chevelle Apr 10, 2008 #5 M MyBoTy Veteran Member 1997 gmc 3500 cc dually. 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. Switch to a lightweight synthetic oil. Not only did the cam swap net an additional 52 horsepower (peak-to-peak), but the gains exceeded 80 hp higher in the rev range. 90 and older is particularly bad and that is largely due to NO OVERDRIVE. 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. Yes, it definitely will. 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. Is it possible to upgrade the ECM on my 1994 Fleetwood Southwind Storm 454 TBI w/4L80E trans? Here is info from COMP Cams. And performance tune? Jump to Latest Follow . Check if this part fits . 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. They also installed roller lifters, heavy springs and chain/gears. Yes, we can tune your engine for more power, doesn't matter what type of transmission. It gets you an EGR blockoff plate for the Vortec 4.3/305/350 engines. Chevy 8.1 Vortec Ultimate Engine Guide - Specs, Performance, Problems Having tried the things you already have, I am pretty confident the issue is the PCM. I have a 1999 Fleetwood Flair with a 7.4 Workhorse. What are your recommendations?? We require the VIN so that we can pull up your vehicle's specific parameters and create a truly customized tune for your vehicle. 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. The compression was plenty low for use with the blower, but the extra power it provided would eventually be multiplied by the boost. He could even be found working on tractors or hay bailers while on vacation at his uncles farm. I have a 2000 GMC school bus with the L21 7400 motor. No videos but your ECM is fairly easy to identify and replace. The Vortec enhancements simply allowed GM to pass smog at a higher RPM. The Gray, the green with white strip and the black test grounded.
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