Re: carb heat shield....
I did order one from GM a few years ago for my big block/Holley set-up. They call it an insulator assembly or "INSUL ASM". Group #3.726 in the parts books. The part number on the one I have is 3969835. If this same one would work for your application, try calling a dealer and see if it's still around.
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Mark
1966 L72, 4spd Caprice
1974 Z28, M40 Camaro
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