Increase Head CC's

Phreakish said
I don't get it.
With a 4.06 bore, 4" stroke, 60cc head chamber, 13cc of piston dish and valve relief, .039 gasket with a 4.18 gasket bore (Felpro 1008) and a 0 deck, I get 11.38:1 SCR. If you're shooting for 11.3-11.5 I don't see why you need to change your CC volume at all? Build it with the 13cc piston and you're golden. The dish on the Icon's doesn't really give up any quench since the resulting shape is basically a stepped piston like the KB356.

View attachment 1716093417

The 13cc Icon dish piston has a 1.450 compression height, I'll have to deck the block again to use that piston. If I have to, I will look into a custom 13cc dish piston at 1.465 compression height so I won't have to. I prefer a flat top piston but the 13cc dish is probably the better option than increasing head cc's.