[BullMeister]

Here's a couple of the real world #'s I could find real quick:

287.61rwhp - 290.20 rwtq - 9psi Hi-Po kit. Got a 13.7 at the track.
298rwhp - 313rwtq - 10.7psi Hi-Po kit

There's more numbers available if you go over to the 4.0 collective and dig around. When they run 'em at 11-12psi you get the 340hp at the crank. The 2 listed here are on basically stock engines (no piston, cam or head changes).

[drjeff]

Thanks for that info. I think I'd be a little too worried about running 10+ psi without any other mods to the engine, but running 290 rwhp with 9 psi would be pretty sweet. I'll have to put this on my list of future mods when I have a spare 4 grand!

[ESG-642T]

Originally Posted by fishingjts

V8 only... (filer)

Soon to be 3.8L mustangs also