AFR 225 head (72cc)

Stoke bore/stroke

-4cc valve relief.

What kind of compression can this net me? shoot me some numbers with different thickness head gaskets as well if you want. I try those compression calculators but I don't think I enter all the numbers correctly. Want to run NA for a while and then slap a T76 on it.

 

10.14:1 with a 3.980 gasket/.056 thick and -.010 out of deck.

 

Wow really doesn't drop compression much does it.

 

you want 72 cc heads, deep dished pistons(more than 12cc dish), and keep the gasket thin to keep quench in check. That will get you down low where you want to be with FI.

 

I guess when the time comes I'll just swap out the ross pistons in favor or something more suited to a turbo setup.

 

i came up with around 9:3 or so with pistons .008 out of hole with a .054 thick gasket.