Headers - SBC 55-57 Chevy

The Patriot Exhaust Headers for SBC 55-57 Chevy are purpose-built long-tube exhaust manifolds designed for first-generation Tri-5 Chevrolet full-size cars. These headers replace restrictive factory cast-iron manifolds and are essential for any serious small-block Chevy engine builder looking to unlock horsepower and improve exhaust scavenging. Delivered as a matched pair with all gaskets and hardware included, these headers eliminate the guesswork from sourcing complete exhaust system components for classic Chevy restorations and performance builds.

Constructed from durable steel in natural finish, these headers feature 1.625-inch primary tubes that taper into a 2.5-inch collector, optimizing exhaust gas velocity and reducing backpressure across the RPM range. The larger collector diameter allows smooth transition into your secondary exhaust system while minimizing turbulence that stifles engine breathing. Steel construction with proper gasket sealing ensures reliability and longevity, while the natural finish resists corrosion common in undercarriage environments. This tube diameter and collector configuration is proven effective for small-block applications producing up to moderate horsepower levels typical of classic street and strip builds.

These headers are specifically engineered for 1955–1957 Chevrolet full-size cars equipped with small-block Chevy engines, making them ideal for owners performing engine swaps or upgrading original powerplants. Installation requires basic mechanical skill and standard hand tools; the included gaskets and fasteners ensure a proper seal at the cylinder head flange. Weighing 25.2 lbs total for the pair, these headers integrate seamlessly into existing frame geometry without modification, though verifying ground clearance and oil pan fitment is recommended before final assembly. Pair these with a quality exhaust system and intake manifold to realize the full potential of your SBC platform.