Quote from: gt350hr on February 02, 2021, 05:22:53 PM
The heads were production C5OE hipo heads with the banana water ports welded by HydroHead out here in California. Pallets of these modified heads were sent to both Mondello and Valley Head Service for full portind and combustion chamber work along with the "chevy valves".
The intakes were ported ( as the small letter Cobra intakes were small ) and the last runs built in '66 used large letter intakes also ported. The camshafts were ground by Engle ( a California grinder) and often their HL56 profile. One way we used to tell original heads was by the stamp noting how much they were milled and blue anodized aluminum retainers for the valves. I still have one set of original heads and one cam.
Randy
Rogers Porting Service, North Hollywood were also used by SAI to modify heads.