On my 70 LT1 the thermostat housing part number is located on the flange having no recesses at the stud and bolt locations.The part # is GM3972128 is this correct, or should it be the '660 part #.
Greg
Greg
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Re: Thermostat Housing Part # ?
Greg------
GM #3972178 was a PRODUCTION-only part number for a thermostat housing that was released in late 1969. It was never sold in SERVICE. I have heard of cases in which this piece is found on 70-71 era small blocks. Apparently, it was used alternately in PRODUCTION in place of the far more common 3877660. I fully expect that it is the original and correct thermostat housing for your car. Whether it would be accepted as such in judging, I couldn't tell you.In Appreciation of John Hinckley -
Re: Thermostat Housing Part # ?
Joe,
The build date of the car is A26 and the engine build date is January 14,1970 an early car #1799.That would make that part exceptable for what you stated and a rare part possibly.It is painted aluminum to match the manifold.The judges at the last meet, a Regional, picked up that it should be a '660.Interesting fact Joe that it could be correct.Most all the major engine compartment parts are dated Nov-DEC.of 1969.
Thanks JoeComment
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