Richard believe it or not, many (maybe all???) 1972s did NOT have a heater shutoff valve. My 350 2bbl with A/C did not. Hot water circulated thru the heater core continuously and a vacumn operated door in the heater box sealed the hot air from the inside of the vehicle.
I have looked thru my 1972 factory assembly manual & Factory service manual and neither references a control valve.
On 8/23/05, Richard Cox <[EMAIL PROTECTED]> wrote:
I'm trying to figure out the correct Heater Control Valve for my 1972
Chevelle SS Small block with Air Conditioning. I thought it was the type
that bolted to the passenger side inner fender. But I ordered one from NPD
and they sent me the valve that has the fitting that screws into the block?
Which one is correct?
Richard Cox
ACES # 06765
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Rick Schaefer
72 TPI El Camino

