Headers, 1965-76 Cutlass, 400, 425, 455, 1-5/8" Tubes, 3" Collector

400, 425, 455 engines

Polished or ceramic coated to suit your needs

A direct replacement for 1965-76 factory exhaust manifolds, these headers are manufactured in 304 stainless steel and feature 1/2" thick mounting flanges to prevent warping. To aid in fitment, the second pipe on the driver's side has been flattened to allow for frame clearance which is not visible when installed. If you can fit factory exhaust manifolds, then these headers fit without any modifications and will also clear the Z-bar on factory 4 speed cars. Primary tubes are 1 5/8", the 2-bolt collector is 3" wide, and the exhaust flanges are cut to mate up to standard exhaust head pipes measuring 2 1/4" or 2 1/2". Includes gaskets.