It may not display this or other websites correctly. How to Make Power with a Chevy TBI V-8 - MotorTrend Even stock we see impressive gains but even more so with the Banks PowerPack installed. This engine has two valves per cylinder and features multi-port fuel injection. Obviously different, but I still think the 454 has more to offer. 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). Thanks for any help. Seems like it's lacking power towing my boat. Thanks. The UltraPower ECM performs very well on both stock engines and ones that have been upgraded with other modifications. The General Motors 7400 is the name given to a 7.4-liter Vortec engine produced by GM from 1996 until 2001 as a truck engine. 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. Marks spare time was heavily consumed by reading automotive magazines and wondering how in the heck people could land a job testing cars all day. Aftermarket hood are hit and miss, we did find that the integrated airbox arrangement of the Suncoast hood played havoc with clearances that were confirmed to fit within the factory underhood bracing. 95K views 2 years ago WESTECH PERFORMANCE GROUP LETS TALK TORQUE! 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). Does this upgrade have a negative or positive impact on engine life? Raylar performance packages allow your 496 to produce massive amounts of power without sacrificing reliability. I sprayed starter fluid in the tbi and it fired up for a few second. 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. I'm sorry, we can't tune anything prior to 1996 model year. We can even modify these Chevy 454 rebuild kits to your specifications, giving your vehicle exactly what it needs for maximum performance. For more information, visit www.P65Warnings.ca.gov, NOTICE: Fororders outside of United States. Orders placed on the weekend or after cutoff on Friday, and orders placed on select holidaysareprocessed on thenext business day. Reading some of your responses I came across one with regards to a 1996. The 1993-or-so design FEAD has been shown the clear the factory hood. no. 454 VORTEC UPGRADES | HardlineCrawlers We immediately checked the latest 8.1L off the list due to lack of availability and parts cross over. Is it worth tuning a black box or worth changing to 411, I have headers ,cat delete, 19.5 five 0 injectors, and Pulling cam swap. Yes, we tune for 87 octane unless a higher octane is requested. We can send a pre-programmed ECU on core exchange. It is $495 if your sending your core/pcm in first. UltraPower GM / Workhorse 7.4L (454) Custom Tuning - Ultra RV Products Free shipping. Would the retuned ECM provide any performance gains above what are present now? The truck does not need to be emissions compliant. If it is a 1998 then yes you can.