???

[SOCAL1320]

wanna lower compression to 9.5:1...what parts are needed? It's a FI build.

[Bigbadwhitey]

Depends on your engine displacement, start there.

[popo8]

Are you doing a ground up build or trying to work with what you have while its in the car...?

[SOCAL1320]

Everything replaced except crank..rest of internals will be forged I'll be running 12psi from a p1sc, looking to have a 355ci forged.

[BIG CAT]

head cc?
gasket bore and thickness?
how far down the hole are the pistons?
what pistons?