Thinnest gasket
#12
Registered
Most BBC's are setup 20-25 down in the hole. with a 39 head gasket that's 60-65 thou of quench. Way too much! You want it under 40 for good combustion and detonation resistance
It's really not that expensive in the sceme of things, and it's also a good way to make sure your deck heights are equal front to back and side to side as well.
#13
Registered
iTrader: (4)
PatriYacht , these are rectangle port that have been wedged to about 316cc and fully ported with some good flow #'s. they were done locally by a head guys who seems to put out some decent #'s, I think you know him.
Last edited by Rookie; 03-05-2007 at 10:15 PM.
#15
Cobra Power
Forget a thinner head gasket, it will account for next to nothing in raising your compression. What compression are you currently running, is this motor naturally aspirtated or supercharged?