64-74 BBC F/G-Body Headers

The FLOWTECH 64-74 BBC F/G-Body Headers (SKU: FLT11130) deliver full-length exhaust scavenging for big block Chevy engines in classic A-Body, B-Body, and F-Body platforms from 1964 through 1974. These headers are engineered to replace restrictive factory manifolds, providing measurable gains in exhaust flow and engine breathing. Whether you're restoring a muscle car, building a weekend cruiser, or maximizing output on a vintage street machine, quality headers are foundational to unlocking your big block's potential.

These headers feature 1.75-inch primary tubes that efficiently collect exhaust pulses from individual cylinders, stepping up to a 3-inch collector for optimized scavenging and velocity. The full-length design minimizes turbulence and backpressure, allowing the engine to expel spent gases more freely and pull in fresh charge on the intake stroke. Constructed from high-quality steel with durable black paint finish, they resist corrosion and heat discoloration while maintaining a clean, finished appearance under the hood. The pair includes all necessary gaskets and mounting hardware, streamlining installation and ensuring a proper seal at the cylinder head.

Enthusiasts and restorers working on big block Chevrolet engines in F-Body Camaros and Firebirds, as well as B-Body Chevelles and A-Body Novas, will find these headers a direct bolt-on upgrade. The compact footprint and proven design fit within tight engine bays while clearing factory suspension and transmission components. Installation requires basic mechanical skills and standard hand tools; gasket surfaces should be cleaned and hardware torqued to factory specifications for a leak-free seal. For anyone seeking to improve throttle response, fuel economy, and overall drivability on a classic big block platform, these full-length headers deliver measurable real-world benefits.