Big round gasket ( obvious..lol) against the block and adapter plate, small metal cored gasket under the head of the bolt, cork gasket at end of bolt, but UNDER the plate, so it seals between the plate and the block.

RIP Monte Smith

Your work is a reflection of yourself, autograph it with quality.

WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.