Edelbrock Pro Flo 4 EFI

jgchemie said

It will "fit" my stock heads but they state to use 360/340 heads because of the port size, I think.

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It will definitely fit 318 heads. The port size on the intake out of the box really needs about 1/8-1/4 inch shaved off to be a proper gasket match with a 360/340 aluminum head.