HEADERS CHEV BB 64-74 GM A-BODY B-BODY F-BODY note

FlowTech Headers are precision engineered and leak tested to get maximum performance and fuel economy from your engine. Each header is formed from specially selected .049 cold roll flash controlled tubing, and features. tuned-length primary tubes for street performance. Mandrel-bent tubing for smooth exhaust flow, Light weight & sturdy 16 gauge tubing, Mandrel-formed Power Plenum, collector for low back pressure, Sturdy, leak-tested O-Ring port seals, Engineered for a precision fit, Designed for easy, trouble-free installation, Includes all mounting hardware and premium gaskets. Suits 70-72 Camaro, 64-74 Chevelle, 71-74 Full Size: 396-454, Tube Size 1.75 inch, Collector Size 3 inch.