Oil tends to collect on the crankshaft counterweights, adding weight to the rotating assembly (crankshaft, rods and pistons) and reducing horsepower through parasitic drag. 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. He eventually figured it out. I assume the module is a pre-programmed ECM chip that replaces the stock ECM chip. Alright Jay! 5. 1 cat is gone already and the other is gutted i am taking it off next week when i get a chance. 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 . Common Problems with Chevy 454 Vortec (Explained!) Vehicle Monitoring and data-logging like no other! 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. Yes you are correct that there is torque management which "pulls" back power when taking off from a stop. I tow a large fifth wheel trailer with RPMs between 1800 to 2500 typically. Is it possible to upgrade the ECM on my 1994 Fleetwood Southwind Storm 454 TBI w/4L80E trans? I didnt see anything on the site but that doesnt mean I saw everything. Heads, intake and headers would definitely wake it up. As I understand it I do not have the newer 0411 ECM and these have better processing power but need to be repinned. The issue with your tachometer would only be fixed if there is an actual issue with your PCM. Do a 12 swap and be done. This mod will not be inexpensive or simple to execute, but it will pay for itself if you do a lot of towing or drive a lot of miles. The tune will definitely wake the truck up. At times I get a dtc for bank 1 and 2 too rich. Now, that poses the question: what would you shoehorn this big-block Chevy into? We are not able to assist in providing this PCM. After selecting a motor, we set about making the necessary changes for our test. The heads, pistons, and intake are stock. 1999 vortec 454 7.4 - HPTuners 4.56 might be abit tall. Unfortunately this is not something that we offer. Its 567 horsepower of usable, reliable, fun power that anybody on a budget can build. I have a 2000 GMC school bus with the L21 7400 motor. We immediately checked the latest 8.1L off the list due to lack of availability and parts cross over. The most important changes that are made have to do with spark advance, fueling, transmission shifting and torque management settings. The truck does not need to be emissions compliant. We gain on average 45-50 horsepower and 50 ft. lb. 2023 Power Automedia. Without going into the engine, they make a supercharger kit for it, I know whipple use to. Later i want to install the banks PPB 49070 package on this motorhome next year. Explore Our Forums. Yes, all gains listed are with 87 octane gas. Performance Street, great low to mid-range. If powertrain performance projects and hardcore technical content are your interest, Power & Performance News is the publication designed for you. 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. GAS MILEAGE. Switched to Mass-Air Flow. 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. We've had a lot of issues with 1996 & 1997 PCM's so for the moment we are not tuning those. We are running about 2-3 days on turnaround right now. HOW TO UPGRADE YOUR TBI PEANUT PORT 454 - YouTube Purchase a Chevy 454 crate engine online from JEGS High Performance. (454 used only MAP) 2. Free shipping for many products! Im interested to know if you change the shift points or anything like that cause I have a shift kit in the transmission already. Recommended 454 TBI modifications | TBI - harristuning.com Chevy Performance BBC L29 Vortec Cast Iron Cylinder Head - JEGS Any "recalibration" would require sending your ECM to us for programming changes. Technical Specifications: No filter cleaning required for up to 100,000 miles. I'm sorry, we can't tune anything prior to 1996 model year. Precision Auto Injectors Genuine Delphi 12568155 12586557 GM Fuel Injectors Set of 6 2004-2007 GM 3.5L OHV. My question is that I have a 1998 7.4 parts truck. 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. It would be a good idea to re-tune for the Banks and injection systems. Boneyard Boost: Vortech 454 - Street Muscle Topping the engine is a borrowed four-barrel Holley XP carburetor. Chevrolet Performance 454 HO 454ci/438HP Crate Engine - JEGS oh, by the way, this is a low mileage engine, single owner and I have taken excellent care of this truck. Could you do a downstream 02 sensor delete? 1996 c3500 dually 7.4 with 5 speed. Orders placed on the weekend or after cutoff on Friday, and orders placed on select holidaysareprocessed on thenext business day. 7.4 Vortec Specs Chevy based the 7.4 Vortec off their 454 big block engine, hence the name 454 Vortec. 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!). 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. I would like to get the o2 delete. 454 vortecgood or bad | Performance Boats Forum They have a high strength carbon steel housing and a high performance rolled seam that exceeds OEM pressure requirements. im wanting /needing power and torque. At the relay the Orange wire is hot with 12 volts continually. 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. 16238212. Chevrolet 7.4 Vortec was a modern-day improvement of the firms most legendary big block. We can adjust for speedometer error. 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. . The Vortec enhancements simply allowed GM to pass smog at a higher RPM. Do you still tune the 96 ecm? Dyno-tested with up to 50% more airflow than restrictive factory box air filter and intake tube. L29 454 Vortec | Team Chevelle Prices increase after 2/28. It's a nice cam for a 454 big block chevy engine that runs with 1500-6500 RPM Range. Free shipping. Then, in 2001, GM dropped the 7400 and 454 combination in favor of the final powerful big block, the 8100 496-cubic inch engine with 340 horsepower at 4,200 rpm and 455 foot-pounds of torque at 3,200 rpm. This is a crew cab, 8 foot bed. 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). 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. I have a 2000 C3500 with the 454/L29 and auto trans. Do you have any videos of how to locate and remove my ECM? The problem with making more power is that cost and performance often go hand in hand. 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. It is $495 if your sending your core/pcm in first. Also the torque management. However, this engine was developed mostly for large towing ability for CAFE-exempt passenger cars, so there is still room for improvement. Even so, this engine was built primarily to provide huge towing power for CAFE-standard exempt vehicles, so there remains some room for improvement. My tech who does the programming is out of town this week so it would get done first thing next week if you wanted to go ahead with it. From my experience, the HyperTech programmer for those engines is pretty generic and does not make very many changes in the programming. If so, is that the unit that sits above the radiator of a 2000 Itasca Suncruiser V32 w/ L29 7.4l (454ci) Vortec? 7.4 and 8.1 vortec hp and tq ratings | Diesel Place K&N Performance Fuel Filters are built for high flow rates and capacity while they provide outstanding filtration. We have a complete Banks Power System and Banks Air Flow. Free shipping for many products! m) at 3200 rpm. Roller Lifters 5. Thanks. Use a set of long-tube headers (exhaust manifolds) and an aftermarket exhaust system. Banks iDash: SuperGauge & DataMonster. This thing is weak as water. 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? 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. 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Free shipping. The 7400 was essentially the same big block 454 that carried Chevy through the muscle car years, but a hydraulic roller camshaft and revised cylinder heads helped to make it far more efficient than the old LS6 could ever dream of being. If you send us your PCM, our turn around is usually 1-2 days. 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. If you would like to place your order feel free to give me a call at 800-417-4559. Been reading the net the last few days on power upgrades for my truck after reading the "best year diesel" thread on here. Check for Availability: $349.95. Another popular upgrade is changing to Bosch 4 hole injectors. Yes, it definitely will. Any thoughts from you technical guys? I plan on the injector and ignition work done in march. $399.99. Precision Auto Injectors Set of 8 Genuine OEM 1996-2000 GMC Chevy 7.4L 454CID Vortec Rochester Fuel Injectors. 454 L29 Vortec Engine Performance | Team Chevelle No where near diesel power my ass. way stronger than a stock 12v, 6.5, & 7.3 powerstroke by far!!!! Check the make, year, and model of your car to see if the VIN number is available. The bill: $3,699.96 for all but the carb. Can you guys tune that ecm? When it shows 55 MPH your actually going about 57 to 58 MPH. So, I am contemplating upgrading this thing for more power, or selling and buying a Dmax. Mark McNabb was a contributor at TopSpeed from 2013 to 2018. That extra air going into your engine needs to get out somehow; installing a full aftermarket exhaust system like this is always good for more fuel economy, especially when combined with a freer-flowing intake. 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. Its amazing what some bolt-on parts can do! The results: 567 horsepower and 537 pound-feet of torque on 89-octane pump gas! Or is it what get is all you get? my old part number on ecm is 16263494 on 1999 454. 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. It will be plug and play. I just ordered an ECM for my 7.4 and was curious on if you guys did this tuning on the 5.7s? I own a 1998 Safari Trek 2830 P32 chassis with an L29 28'7" Class A RV Drivetrain it s completely OEM.. You may also like. It wasnt the best moment to put out a big cubic inch big block designed for performance vehicles, but the Chevy 454 made an impact. In search of power, GM reverted to the big-block engine design, with a 454-cubic inch displacement. can you tune it Perform with these upgrades, We would like to have ordered the 7.4 custom tune ,but appearantly you are out of stock at the moment.Is there any time frame when you will have more modules.I would like to send you mine but I need my vehicle.Also we would like to have had the reasonable price. 454 L29 Power Upgrade. Whether your power boat is running boost or naturally aspirated, we have the correct performance parts for your application. It was known as the Vortec 7.4 (7400, Regular Production Option designation L29) in North America and across other markets. BBK 1710 80mm Throttle Body - High Flow Power Plus Series GM Vortec 305 I would like the biggest bang for the $. Give me some idea as to what this product does exactly, and how I will benefit from spending $$ on it. Im doing a full build on the motor Ive been told that these injections systems dont do well with these kind of upgrades. Yes, we can resolve your issues. Opinions On the 7.4 / 454 Suburbans and engine - Expedition Portal The Vortec 7400 as you know lays down 290 HP and 410 LbFt of Torque. 1996 K3500 454 (7.4L) | Off Roading Forums Reference core exchange, what is the time limit for you to receive the exchange? We are currently out of clean/painted cases for the PCM's. You might also want to consider a high voltage coil, high performance 8 mm spark plug wires and a set of quality aftermarket spark plugs to help your engine ignite more of the fuel that goes through it. This is only 1 of the many changes that we make with our programming to achieve great power gains. Roller Cam, .483 Lift . I have a 2000 gmc k2500 with the l29 454. Feb 1, 2016 #2 Jorge6.5 I'm Awesome Joined May 17, 2013 Messages 1,015 Reaction score Yes it would, the Banks PowerPack is helping the engine breathe better but the computer is not doing anything to take full advantage of it. Makes NO permanent changes to your vehicle's computer! But like any stock engine, there was tons of power left to be squeezed out. 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. If I send in a functional pcm for my Suburban mentioned in last question whats the average turn around for it? Following up from previous question, here is the VIN 1GDG6H1BXYJ907917 and #s off the ECM, 09384681, sev. Build your own custom newsletter with the content you love from Street Muscle, directly to your inbox, absolutely FREE! If you send your ECM in, we can make the necessary adjustments you are requesting. 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. 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. Buy your ELGIN Industries HL-7003S Hydraulic Roller Valve Lifters set at Amazon. At this point the engine run well, with no code problems. How much will the customization cost me? Yes, you will still pass emissions as long as you don't tamper with the existing emissions systems. Or if I pay to send in, is the return shipping included in the $495? Surprisingly, the 454 laid down an impressive 330 horsepower and 475 pound-feet of torque. What is the difference between a Duramax 6.6-liter and a Chevrolet 7.4-liter engine? 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.