IS a 97 S281 (4.6L) saleen capable of producing 550 RWHP with a vortech pushing 11lbs, blow off valve, 42lb injectors dual throttle bodies, intake, long tube headers, rebuilt engine with JE pistons, custom cams, crankshaft, etc. Proffessional dynotuning, aluminum driveshaft, exhaust, fuel pressure regulator, 225lph fuel pump with an external fuel pump

 

Maybe.

 

Well i bought this car and just want to see if the guy is full of **** i'm having the engine looked at to see what all was done then i'm going to get it dynoed to see..

 

at 11 psi you would need to have ported heads to get 500 rwhp, IMO, but you may prove me wrong. If you build the engine right, with lower compression forged internals, and a good tune, 12-15 psi shouldnt be a problem on the street.

 

oh i'm sorry the heads are ported and polished and a compression ratio OF 8.5:1