Corvette Exhaust Manifold Gasket Set. Big Block: 1965-1974

Restore peak performance to your vintage Corvette with this Corvette Exhaust Manifold Gasket Set for Big Block engines (1965–1974). Precisely engineered to match the original gasket contours, this kit seals the exhaust path between the cylinder head and the exhaust manifolds, eliminating leaks that rob power and create heat hotspots under the hood.

Designed for authentic restoration and reliable daily driving, the gasket set is built to endure the heat and pressure of bigblock V8s across the era, helping to maintain correct exhaust flow and engine timing. By sealing gaps at the manifold flanges, you can expect improved throttle response and a richer, more authentic exhaust note.

What’s included and fitment

Includes all gaskets needed to reseal both exhaust manifolds on a Corvette bigblock from 1965 through 1974. The shapes and bolt hole alignments are matched to the factory hardware for a straightforward install and a reliable seal, reducing the risk of leaks that can occur with worn or mismatched gaskets.

Key benefits

• OEMContour Fit: Gaskets are crafted to mirror the original Corvette exhaust manifold geometry for an exact match with the cylinder head and manifolds.
• Durable sealing surface: Built to withstand repeated heat cycling and corrosion from exhaust gases, helping prevent leaks over time.
• Enhanced exhaust flow: A proper seal preserves designed exhaust flow, supporting idle stability, throttle response, and overall engine performance.
• Easy installation for restorations: Aligns with factory bolt patterns, simplifying reuse of existing hardware and manifolds.

Who this is for

Ideal for classic Corvette restorations, hobbyist rebuilds, or any bigblock engine maintenance where a trusted, periodcorrect gasket is essential. If you’re restoring a 1965–1974 Corvette or maintaining a driveready bigblock, this kit aligns with your goal of authentic, dependable performance.

Tips for best results

• Prepare the mounting surfaces: clean and inspect the manifold flanges for warping or cracks before installing new gaskets.
• Torque to specification in a crisscross sequence to ensure an even seal across both sides.
• Inspect exhaust studs/bolts for wear and replace as needed to prevent future leaks.
• After installation, check for leaks after a brief test run and retighten if required per your vehicle's service manual.