Seller notes

DescriptionExhaust Manifold Header For Chevrolet 265 283 305 307 327 350 383 400 V8 1955-1 5/8" large heavy duty primaries are mandrel bent for optimal flowSimilar headers have 1 1/2" thin wall tubes which hurt flow3/8" flange means a great seal that won’t warp2 1/2" collectors creates perfect scavenging of your exhaustIncreases engine power - 15+ horsepower & 20+ torqueStock motor mounts can be used , hugger header style headers that will help you to avoid many clearance problemsThese headers...

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