Keith Black pistons VS Speed Pro for 318

Good point. If you are running a closed chamber head (like a 302), thats too close. Use a regular Fel-Pro .043 gasket. If you are more than .010 in the hole, use the MP thin gasket. Besides, 10.6 is pushing it on pump gas. A properly set up chamber with .030 - .060 quench will get you there.