What's the max rear wheel horsepower ever supported with a stock TBI fuel pump?
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Joined: Apr 2000
Posts: 682
Likes: 24
From: MidWest
Car: 91 RS/ 99 T/A/ 72 Vette/ 02 Z28
Engine: LSx/ Dart400
Transmission: M6/ M6/ TH400/ 4L60E
Axle/Gears: 4.10's / 3.08/ 2.73
What's the max rear wheel horsepower ever supported with a stock TBI fuel pump?
What's the max rear wheel horsepower ever supported with a stock TBI fuel pump?
I've read the max flywheel hp for a stock TBI fuel pump is about 300 hp. This would suggest between 245rwhp to 255rwhp is possible.
What fuel system mods are needed to support ~300rwhp to 350rwhp? New pump? bigger lines? etc?
Likewise, if a TPI fuel pump has an adjustable pressure regulator on it, how much more rwhp can it support than the TBI pump.
Any info appreciated in advance.
I've read the max flywheel hp for a stock TBI fuel pump is about 300 hp. This would suggest between 245rwhp to 255rwhp is possible.
What fuel system mods are needed to support ~300rwhp to 350rwhp? New pump? bigger lines? etc?
Likewise, if a TPI fuel pump has an adjustable pressure regulator on it, how much more rwhp can it support than the TBI pump.
Any info appreciated in advance.
Joined: Jul 1999
Posts: 876
Likes: 2
From: St. Louis
Car: RS
Engine: LS1
Transmission: T56
Axle/Gears: 9" for the ladies
With a carb an a TBI pump where I only need 6psi and I use a vacum AFPR to completely close the return line, a lot!
Don't have any dyno numbers though.
Don't have any dyno numbers though.
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