Looking for some opinions here. I'd like if some of you could share your thoughts.

Application is boosted S-trim vortech, singleplane intake. 12psi boost currently.

Current setup is:

TRW-L2256F30 pistons
Iron Sportsman-II 72cc chambers
8.96:1 Compression ratio




Piston + chamber combinations: Pick one

64cc chamber and flat top 9.72:1(http://store.summitracing.com/partde...trw%2Dl2256f30)
72cc chamber and flat top 8.96:1 (http://store.summitracing.com/partde...trw%2Dl2256f30)
72cc chamber and dome 9.72:1(http://store.summitracing.com/partde...trw%2Dl2304f30)

Whats the pros and cons of large chamber vs small, and dome vs flat top under boosted conditions?



Piston rings:

Chromoly (http://store.summitracing.com/partde...B6232A9A081%7D)
Plasma-moly (http://store.summitracing.com/partde...B6232A9A081%7D)


Head gasket:

Suggestions?

 

I believe that no matter what your engine is it needs to have a small chamber. It is easier to control detonation than a large chamber/large piston.
A flat top or properly designed dish will make more power than a dome in a wedge style head.
I run aluminum AFR heads and 9:1 actuall compression
Quench needs to be no more than .045
piston .005 in the hole
.040 cometic head gasket
Plasma moly
A/A intercooled (but still not good enough as my intake temps are 200* at the end of a run) A/W for next year.