SBC Head Gasket (1 Piece)

The SBC Head Gasket by Mr. Gasket is a precision-engineered shim gasket designed for small block Chevy engines requiring exact compression control. Built for serious engine builders and performance enthusiasts, this 0.020-inch compression thickness gasket maintains critical sealing integrity between the cylinder head and block while controlling combustion chamber volume. Whether you're rebuilding a stock 350 or fine-tuning a modified power plant, the correct head gasket thickness directly impacts compression ratio, ignition timing requirements, and overall engine performance.

Constructed from durable steel with a 4.100-inch bore size, this MR. GASKET component is manufactured to OEM tolerances and specifications. The 0.020-inch shim thickness allows builders to fine-tune compression ratios when combined with head milling, piston dome height, or deck height modifications—a critical capability when optimizing fuel octane requirements or maximizing performance in naturally aspirated or boosted applications. The gasket's steel construction resists deformation under high cylinder pressures and thermal cycling, ensuring consistent sealing across repeated heat cycles.

This single-piece gasket is essential for small block Chevy builders working with 350, 327, 305, and similar displacement variants. Professional machine shops and weekend warriors rely on Mr. Gasket's precision tolerances when assembling long-block assemblies where compression accuracy matters. Installation requires clean mating surfaces and proper torque sequencing to cylinder head fasteners; always use fresh fasteners and follow manufacturer torque specifications for your specific block and head combination to avoid leakage or gasket failure.