The 454 HO crate engine boasts 438 HP and 500 lb-ft of torque. 1999 Crew cab dually, 454 vortec, AUTOMATIC. The air filter is easily removed, cleaned, and reused. Hi Warren, that is definitely something we can tune for. If you are wanting to keep the truck otherwise stock, the tuning would be your best upgrade to boost the performance and it would definitely help the low end where you are wanting it to. 7.4 Liter Vortec Info | GMC Truck Forum Despite the impressive cooling powers of the carburetor, we were still concerned about the elevated charge temps going into the carburetor. I think I am going to swap on a good set of aftermarket heads and change out to an Edelbrock Pro Flo EFI. 5. Step 2 Install a high flow air filter and cold air induction intake. In an effort to further drop the inlet air temps, we installed a makeshift air-to-water intercooler. 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. 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. cam with matching torque converter and headers would be easy. It was known as the Vortec 7.4 (7400, Regular Production Option designation L29) in North America and across other markets. 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 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. We appreciate it but we only specialize in the big block engines. It's a nice cam for a 454 big block chevy engine that runs with 1500-6500 RPM Range. I am doing a full engine swap from a damaged motorhome to my older motorhome. Chevrolet 7.4 Vortec was a modern-day improvement of the firms most legendary big block. I've always heard that they were a good upgrade to the TBI 454 and earlier 454 heads. I called Banks Power last week to try and find out what they recommend. 7.4 and 8.1 vortec hp and tq ratings | Diesel Place Precision Auto Injectors Set of 8 Genuine OEM 1996-2000 GMC Chevy 7.4L 454CID Vortec Rochester Fuel Injectors. Stage 1 Upgrade for Mercury 525 EFI. These modifications will improve net mileage without sacrificing power, resulting in better overall mpg. Opinions On the 7.4 / 454 Suburbans and engine - Expedition Portal 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. Is this doable? Do a 12 swap and be done. Cost is $395 plus a $175 core charge which is refundable. $199.95. It is $495 if your sending your core/pcm in first. But like any stock engine, there was tons of power left to be squeezed out. 454 vortec or 8.1 swap? | Chevy Impala SS Forum I have a 1996 C3500 crew cab dually with a 7.4. He eventually figured it out. Vortech Superchargers Don't worry about what a camshaft may produce at 4000-5000 rpms in truck engines like this - YOU DON"T DRIVE THERE! 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. How to Make Power with a Chevy TBI V-8 - MotorTrend If I send in a functional pcm for my Suburban mentioned in last question whats the average turn around for it? 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 It will not void your factory warranty, and does not modify any emissions systems. The bill: $3,699.96 for all but the carb. Please contact us directly to set that up at 800-417-4559. Seems like it's lacking power towing my boat. Hardin Marine - EFI Upgrade Kits . Engine is in stock configuration with no upgrades. The 1970 Chevrolet 454 was the most powerful with outputs of 360 and 450 horsepower from the LS5 and LS6, respectively. We'll send you the most interesting Street Muscle articles, news, car features, and videos every week. The tune will definitely wake the truck up. How To Add 70 Percent More Power to A Chevy 454 V-8. If I order a ecm reprogram will this fix my speedometer error too?? Even stock we see impressive gains but even more so with the Banks PowerPack installed. This left us with Mark 4, Gen V and Gen VI big blocks to choose from, any of which would work for this project. . Some parts are not legal for use in California or other . After selecting a motor, we set about making the necessary changes for our test. 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. We are unaware of any cam upgrades specifically for the L21. 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. Steel Camshaft 4. We are running about 2-3 days on turnaround right now. . Check back with us as we plan on adding a set of Brodix Race Rite aluminum heads to the mix in Part 2 of Project Boneyard Boost. 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. Change to a synthetic oil that is light-weight. 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. Only tow rigs I have used to pull my Jeep with was this truck and my DD Driver 5.3 Tahoe. Pindar I just bought this 97 suburban 4wd with the bbc. So if I have your tune done what is the turn around time sending my PCM to you? Alright Jay! The only weak link is the peanut port factory heads and the sprinkler style fuel injection. Our tuning is custom to your vehicle so if you ever did have a dealer flash the computer it would wipe out the performance settings and revert to stock. Do you have any videos of how to locate and remove my ECM? It may not display this or other websites correctly. 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. 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. Obviously different, but I still think the 454 has more to offer. During its five years on the market, the 7400 was employed in 26-foot U-Haul trucks for commercial purposes. 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. Also I have Thorley tri Y hearers on mine will that effect the tune? 16238212. When you purchase, just let us know any modifications or requests and we can accomodate. I have the parts list and see one item called 01-412-8 hyd roller cam for $315. Just make sure to include that information in the order comments and we can make that happen for you :). 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 have a 1996 Suburban K2500 with the L29 engine and 4l80 trans. Please see our shipping terms for more information. 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. Or is it what get is all you get? 2000 Chevy Truck 454 Specs | It Still Runs Overall Length: 3 inches, 74 mm. The state of California requires that this warning be posted for people purchasing products that reside in California. Roller Lifters 5. It specs out at 265 HP@4500 RPM and 340 ft/lbs of torque@3500 RPM. I sprayed starter fluid in the tbi and it fired up for a few second. We gain on average 45-50 horsepower and 50 ft. lb. 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/. Yes - We can definitely take advantage of the current modifications done to the truck and really help it out. Installed E3 spark plugs which seemed to help. Safely gain up to +35 HP and up to +5 MPG in fuel mileage in your vehicle by safely optimizing your air/fuel ratio and timing curve for increased efficiency! 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. Install an aftermarket windage tray in your engine. It is a re-programmed ECM, either you send yours in or we send you one on a core exchange. The 454 Vortec is the last in a line of one of the most successful classic engines in GM history. 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. They have a high strength carbon steel housing and a high performance rolled seam that exceeds OEM pressure requirements. I fought this truck with the cats deleted and air pump disabled. im wanting /needing power and torque. Best, least expensive way to get more power out of this engine is with our custom tune. The previous owner had the engine rebuilt in 2012 and tells me they installed an RV cam but I am not sure which one.