Hooker Exhaust Manifolds - GM LS (except LS7/LS9) - Natural Cast Finish (Pair) Crimp Collar a "center hung float" has

a "center hung float" has its float arm attached to the float center and its hung or pivoted from the center of the float bowl

Shaft Diameter

Bell’s PRO-TX bottom provides additional thermal protection designed for all levels of motorsports

1987-1991 Pontiac Firebird CID 350 Naturally Aspirated GAS

Curved Bottom

Hooker Exhaust Manifolds - GM LS (except LS7/LS9) - Natural Cast Finish (Pair) Crimp Collar a "center hung float" hasHooker cast iron exhaust manifolds have been designed to hug close to the engine block so they fit into a wide variety of replacement and engine swap applications. Their contoured design aims the exhaust directly at the exit port for improved flow. Being cast iron means they will provide years of leak free performance with less under hood noise than traditional headers. Plus, their shorty design means you can route exhaust tubing close to your frame