Chevy SBC 350 Truck Pick Up 1966-1987 Black Exhaust Headers Convert any one-piece GM TH400

Convert any one-piece GM TH400 case into a two-piece case with our Speedmaster TH400 case adapter

if you want more airflow then you should grab up one of these Speedmaster X-Stream air flow top plates

necks and are available in two versions--a durable plastic model and a thick aluminum model that won't bend after multiple uses

barrel-shaped

These can be used on std or aftermarket plenum manifolds

Chevy SBC 350 Truck Pick Up 1966-1987 Black Exhaust Headers Convert any one-piece GM TH400Increase your horsepower and torque for your ride just bolt on these Speedmaster headers! These headers are designed with 3 8 in. thick laser cut flanges and mandrel bent primary tube. If your vehicle is using aftermarket components, parts from other applications, or custom altered parts, then it is the installer's responsibility to verify fitment.