The HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block.
Cometic 17-18 GM LT1/LT4 Gen-V Small Block V8 4.200in Bore .040in MLX Cylinder Head Gasket
GM LT1/LT4 Gen-V Small Block V8 .040in. MLX Cylinder Head Gasket; 4.200in. Bore
GM LT1/LT4 Gen-V Small Block V8 .040 " MLX Cylinder Head Gasket, 4.200 " Bore
GM LT1/LT4 Gen-V Small Block V8 Cylinder Head Gasket
GM LT1/LT4 Gen-V SB V8 Head Gasket
Cometic Cylinder Head Gasket
Engine Cylinder Head Gasket
Cylinder Head Gasket