I do not have definitive knowledge, but a cast iron thermostat housing certainly does not seem correct for ANY 69 big block to me. I know that my low mile 325hp 69 SS396 convert has an aluminum one on it. Engine build date of 12/30/68.
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Bill Pritchard
73 Camaro RS Z28, L82, M20, C60
Last edited by Bill Pritchard; 09-11-2019 at 03:44 AM.
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