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Re: Big block questions.....
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Originally Posted by 70rs/ss
As for the intake, it could be a GM/Holley collaboration for a Perf BBC. I have seen High rise BBC cast manifolds on Chevelle motors and such, just didn't know holley helped?? A casting number off the intake will help to ID what it came on if a GM number, may be worth some coin if it off of a muscle type high HP 427 like a vette?
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They worth a little money, but nothing like rectangular port high HP intakes. The cast iron intakes were made for mid-level performance, usually topping out around 350HP.
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