I agree with everything Glenn has said. I'd just like to add that from my research and findings are that 396s and 402s love big cams and more air movement with better cylinder heads. I had a 396 in a chevelle with a .650" lift circle track cam and a 4 speed. That car ripped and I drove it every day. It may not have been as fun without the 3.73s and 4 speed.

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