Headers - BBC Tri-5

The Patriot Exhaust Headers - BBC Tri-5 are purpose-built exhaust manifolds designed specifically for big block Chevy engines in classic 1955–1957 Chevrolet fullsize cars. These Clippster-style headers represent a foundational upgrade for any Tri-5 restoration or hot rod project seeking to unlock genuine horsepower gains and improve exhaust scavenging. As a mechanic working on vintage muscle builds, you'll recognize that factory cast-iron manifolds are restrictive bottlenecks; proper headers allow exhaust gases to exit more efficiently, reducing backpressure and enabling the engine to breathe.

These headers feature 2-inch primary tubes that taper into a 3.5-inch collector, a proven configuration that balances scavenging efficiency across a wide RPM band. Constructed from high-quality steel in a natural finish, they are designed for durability and performance. The natural finish requires proper heat shielding and regular maintenance to prevent corrosion, but many builders prefer this over ceramic coating for authenticity and ease of future cleaning or refinishing.

These headers are ideal for Tri-5 owners building period-correct performance or restomod engines who demand measurable gains without resorting to modern LS swaps. Fitment is precise for 1955–1957 Chevy fullsize vehicles, ensuring a straightforward installation process with included gaskets and mounting hardware.