Do you still tune the 96 ecm? 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. Yes, we could accept the PCM from your '98 as the core. 7.3 is 250-275/505-525 stock. . Use for stock replacement OEM original equipment. Does this computer hav egr delete programmed into it. Topping the engine is a borrowed four-barrel Holley XP carburetor. Buy your K&N PF-1000 Fuel Filter at Amazon! I have a 98 C-3500 dually with a Vortec 454. 1996 c3500 dually 7.4 with 5 speed. 4 Bolt Main GM Factory Vortec, Edelbrock's Performer Multi-Point EFI. Hi Warren, that is definitely something we can tune for. If I order a ecm reprogram will this fix my speedometer error too?? My question is what cam you would recommend for towing? The tire are one size larger than stock to the speedometer is off a little. We have been doing them on a limited basis, it has been very challenging to find good cores to use. Buy in monthly payments with Affirm on orders over $50. Performance Street, great low to mid-range. We can tune stock or modified, not a problem. I plan on the injector and ignition work done in march. There should be no reason to ever need to reprogrammed in the future and if you needed a replacement PCM we can take care of that for you. Best, least expensive way to get more power out of this engine is with our custom tune. How much can you get them for? BBK Performance Parts 1710-XD GM VORTEC 305/350/454 80MM POWER PLUS THROTTLE BOD. My next upgrade is going to be exhaust. 95K views 2 years ago WESTECH PERFORMANCE GROUP LETS TALK TORQUE! If you want to send your PCM in that you know is functional, that is the best way to do it. Subtract the standard .050-inch clearance, this leaves only enough room for a .420-inch lift cam. The air filter is easily removed, cleaned, and reused. I have a vortec454 in a non smog az tow vehicle. I was interested in your tune for this engine and was wondering what your best guess on the horse power / toque gains would be. 454 L29 Power Upgrade | Hot Rod Forum The state of California requires that this warning be posted for people purchasing products that reside in California. We can easily do this with the specs you provide. The Official Vortec 454 Info thread - GMT400 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. 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. Eric, we can program for EGR delete, cost would be $ 495.00 and would also include the performance tune . Injector type: US-CAR, saturated. My car is GMC pick-up 7.4L 1998. it is manual transmission. I just put the k&N system on my truck made a huge difference in sound and performance I would deffanitly recomend spending the $250. Thank you. The C/K 3500's standard engine is a 5.7-liter V8 OHV 16-volt FI engine, and the 454 engine comes as an optional upgrade. It is a redesigned Chevrolet Big-Block engine and was introduced with the 2001 full-size pickup trucks. Free shipping. We would just need to know the tire size you are running and if the rear gear ratio was ever changed from factory. Reading some of your responses I came across one with regards to a 1996. "SE" Special Edition Tuning Kit For MerCruiser 454 & 502 Magnum MPI Engines. Or if I pay to send in, is the return shipping included in the $495? Other #s not sure what they are if theyre useful, 86DAFMM0017433PS, HDW # 16239740. When it shows 55 MPH your actually going about 57 to 58 MPH. 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. Its amazing what some bolt-on parts can do! Chevrolet 7.4 Vortec was a modern-day improvement of the firms most legendary big block. If you choose the core option we will program an ECM here and ship to you. Install an aftermarket windage tray in your engine. 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. O-rings: Top and bottom, 14.5 mm - Viton. 2000 Chevy Truck 454 Specs | It Still Runs How To Add 70 Percent More Power to A Chevy 454 V-8 - Top Speed I do still have all the O2 sensors but would like to delete them if possible. We tune the original black box PCM but do not do the 411 swap. Recommended 454 TBI modifications | TBI - harristuning.com Buy your Innovative Performance Chip/Power Programmer at Amazon! 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. We can accommodate your requests for the oxygen sensors, speedometer adjustment and increased HP/TQ. We can also adjust your speedometer to be correct. Learn more. Mostly people saying to try this and try that. Buy your ELGIN Industries HL-7003S Hydraulic Roller Valve Lifters set at Amazon. So I have a 98 K3500 with the 7.4L and I use it mainly for hauling, but I have began to daily it. The 7.4 Vortec was essentially the same big block 454 that Chevrolet used to power its muscle cars, but it gained a hydraulic roller camshaft and improved cylinder heads to make it considerably more efficient than the old LS6 could ever hope for. Banks iDash: SuperGauge & DataMonster. The cooler charge air (plus tubing length and bends) dropped the peak boost pressure from 19.1 psi down to 17.7 psi. I read in earlier questions asked that you had stopped doing the earlier ones. It is located on top of the radiator support and has 4 connectors going into the back of it. Makes NO permanent changes to your vehicle's computer! If not can a non uhaul ecm be used (ie plugged into the current harness)? Naturally, the truck-based 454s were tuned for torque, so having nearly 500 pound-feet wasnt a big surprise. 1999 vortec 454 7.4 - HPTuners BBK 1710 80mm Throttle Body - High Flow Power Plus Series GM Vortec 305 Using 3.5-inch aluminum tubing from CXRacing, we configured the intercooler between the YSI supercharger and the blow-through carburetor bonnet. As you can tell, it doesn't deliver much. While we do get reports back of fuel economy gains, that is something we can not guarantee as there are just too many variables that can affect an RV's fuel economy. Buy in monthly . Is the pcm that is used a 411? The proper application of boost to any motor is never inexpensive, and our Vortech YSI supercharger was not what could be considered low-buck, but it was epic in its effectiveness. If you are placing an order to ship outside the United States, Shipping Insurancewill be required and added automatically at checkout. Rowe studied engineering, philosophy and American literature at Central Florida Community College. If it is a 1998 then yes you can. Is there any way I could send you that one as a core in return for one to work in my 2000? You will gain approximately 35-40 horsepower and 45 lb-ft torque. What are your recommendations?? They said they no longer support my RV and had no parts available. Yes - We can definitely take advantage of the current modifications done to the truck and really help it out. GAS MILEAGE. youll have to stick to a torque cam because of the computor needs vacuum (speed density) headers will help greatly. That said, the main internal differences between the L29 and L21 is that the L21 has forged pistons and crankshaft. Use a set of long-tube headers (exhaust manifolds) and an aftermarket exhaust system. Oxygen sensor modifications can be done. I use the truck for towing and it is quite weak, If this ecm has to be reprogrammed in the future do I go to GM Dealer or have to send back to you?? The Gray, the green with white strip and the black test grounded. Do a 12 swap and be done. 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? 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. When you buy a single component or a complete kit, like a camshaft, you must ensure that it is suitable for your car. A cold air induction setup will feed the engine cooler and more oxygen-dense air. Buy your Big Autoparts Ignition Distributor Set DR474 DR331 at Amazon! Just wondering because Id buy one of those as well. First off, I snagged a used 454 throttle body off ebay and sent it out to www.rvmorsemachine.com to get bored to 54mm for some decent air flow for this big block project. Would this work on 1996 7.4L L29? 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. 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. Free shipping for many products! better yet have it tuned (Brian Bosch I believe is the man to talk to about . 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. We require the VIN so that we can pull up your vehicle's specific parameters and create a truly customized tune for your vehicle. I fought this truck with the cats deleted and air pump disabled. 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. Headers exhaust. Switched to Mass-Air Flow. We immediately checked the latest 8.1L off the list due to lack of availability and parts cross over. Are there any gains to be had by programing and adding headers to my truck? 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. The UltraPower ECM performs very well on both stock engines and ones that have been upgraded with other modifications. The Vortec 7400 as you know lays down 290 HP and 410 LbFt of Torque. 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. Can i tell if my RV has this already? 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 truck does not need to be emissions compliant. We removed the factory EFI injection, and replaced it with simple carburetion. Very interested in this. Thinner oils allow the internal engine components to spin more freely and effectively, which improves their function. A cold air induction setup will feed the engine cooler and more oxygen-dense air. 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. high flow intake elbow, filter and MAF Please see our shipping terms for more information. 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 have a 1996 C3500 crew cab dually with a 7.4. I have the parts list and see one item called 01-412-8 hyd roller cam for $315. Yes we modify the shift patterns to hold the upper gears longer, your shift kit would not interfere or cause issues. This camshaft provides more lift and longer duration using the 10-12 Manifold vacuum. Chevy 454 Engine Guide - 7.4L V8 Specs, Problems, Performance I think I am going to swap on a good set of aftermarket heads and change out to an Edelbrock Pro Flo EFI. I am of the same opinion that the UltraPower programming is going to be by far your best "bang for the buck". 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. I won't change the exhaust or add a ring eating K&N. Check out their web sight Bankspower.com Originally Posted by PonyKiller87 Ok, sounds just like swapping over the 96-00 vortec 350 to the 0411 as far as the wiring goes. You are using an out of date browser. 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. We'll send you the most interesting Street Muscle articles, news, car features, and videos every week. Thousands of satisfied customers have reported fuel economy increases as well as less transmission downshifting because of the increased horsepower and torque. 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. I have Bosch Gen III injectors; Volant Air intake; and 3 exhaust. If so, is that the unit that sits above the radiator of a 2000 Itasca Suncruiser V32 w/ L29 7.4l (454ci) Vortec? The great thing about using a blow-though carburetor combination is the intercooling effect you get from the introduction of fuel. Not sure if you have any other issues causing low power though because it should outperform the 5.7L, especially towing. However, this engine was intended to provide significant towing power for CAFE-exempt vehicles, so there is still room for improvement. 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. Thank you. oh, by the way, this is a low mileage engine, single owner and I have taken excellent care of this truck. 3. The Vortec 454 was touted as having substantially more power. How to Make Power with a Chevy TBI V-8 - MotorTrend They also installed roller lifters, heavy springs and chain/gears. Yes, this would be the compatible ECM with your VIN and part #.