SBC Copper Exhausts Gasket

The SBC Copper Exhausts Gasket by SCE GASKETS is a professional-grade exhaust header gasket engineered for small block Chevy engines seeking reliable, high-temperature sealing. Whether you're rebuilding a street engine, prepping a race motor, or restoring a classic, this copper gasket pair addresses the critical weak point where header tubes meet the cylinder head—a junction prone to exhaust leaks, heat loss, and performance degradation. Proper gasket selection here prevents pressure bleed-off that robs power and ruins fuel economy.

Constructed from pure copper and sized to fit 1.350 x 1.700 inch oval ports, the SBC Copper Exhausts Gasket delivers superior thermal conductivity and conformability compared to composite alternatives. Copper's malleability allows the gasket to compress evenly across port faces, accommodating minor casting irregularities while maintaining a lasting seal under sustained cylinder pressures and temperature swings. The two-gasket set ensures you have matched pairs, critical for symmetrical sealing and preventing cross-firing or unequal scavenging that destabilizes idle and throttle response on dual-plane or single-plane intake manifold setups.

Mechanics and engine builders trust copper gaskets when working with high-output small block Chevys—especially boosted or nitrous applications where exhaust gas temperatures exceed 1,200 degrees. Installation requires only a clean gasket surface, correct torque sequencing on header bolts, and hand-tight fasteners before final tightening to prevent gasket walk. The compact 0.2-inch thickness ensures minimal obstruction in tight engine bays while the pair configuration streamlines inventory for both street machines and competition builds targeting maximum scavenging efficiency.