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The JBA Cat4Ward header for 1965–1986 GM trucks (265–400 SBC, carbureted, with A.I.R., titanium-coated primaries) is a shorty replacement that opens exhaust flow and aids engine efficiency. It pairs mandrel-bent stainless tubing with 3/8" machined flanges, oversized ports and the Firecone collector, and includes factory-style emission connections and robust hardware for a proper installation.
JBA 65-86 GM Truck 265-400 Carbureted w/A.I.R. 1-5/8in Primary Ti Ctd Cat4Ward Header
