Quote:
Originally Posted by HotRodRancher
I'm returning a 1972 C20 truck with its original 350 back to stock using the original cast iron intake and quadrajet carb. I will leave the crossover passages in the intake open as they were were originally. From the factory when new did the passenger side exhaust use a heat riser valve between the exhaust manifold and exhaust pipe?
TIA
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On my '72 K20, yes. Probably on your C20 too.