Whats the min gasket thickness you folks would run with an iron headed 355 @ 10-12psi boost?

I'd like to get away with an .020..

-- Joe

 

I'd look at two different things. Piston to deck clearance and compression ratio. Mainly quench distance (piston to deck). The recommended range for the most detonation resistance is .040-.045. Keep in mind that stock small blocks come with a piston to deck clearance of .025, so from there, you have to take into consideration....any passes taken off the deck, piston domes and dishes. Those are about the main things. Also rod lengh and wrist pin height can play a role if you start getting exotic.

 

Piston recomends a deck height of .022, which is what I'm planning on decking the block too. The piston is a TRW 2256 flat top. (http://store.summitracing.com/defaul...t=trw-l2256f30)

I'm hoping for a .020 gasket, to get the compression, and quench area where I want it. (9.37:1 c/r)

The more quench area, the more it helps fighting detonation, no?

-- Joe