looking to supercharge a ls vtec and need some adivse on setup. Lookin to go with oversized p30 pistons for the bottom end but wondering about the head? is it going to help me to go with a high lift cam like skunk 2 s 2's or just stick with my sir cams? looking to hit 275hp at least.

 

Holy crap, that's gonna have some serious compression, depending on the head and the piston height, not sure what piston-deck would be for p30's in a B18A/B, but at least 11.5, possibly over 12. You're going to be knock-limited on pump gas. I'd advise against the S2S2's, I never had any luck with N/A cams and a supercharger, too much duration. Stick -w- the SIR cams.