interesting Chevy BB alu intake manifold
Looking for information on this intake manifold and cannot find the number. It has a date code 9-27-65 and has open plenum that looks like it was cast not milled. Cast no. 3878299 and H. YUNICK stamped on it. Smokey Yunick's first name was Henry. Can this be some type of early prototype L88 intake or?
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