Heat restrictor in intake manifold?
I have been putting my 402 big block back together.It is out of a 72 C10 the gasket set had 3 intake gaskets one with a heat restrictor and one without.I don't recall seeing one in the old gaskets I have already thrown them away.Do I use the heat restrictor or not it has a quadrajet carb on it supposed to be oem.
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