Budget 318 build

dartfreak75 said

For pump gas what compression is desired? And with stock 318 would a bump in compression help without adding more flow? Just curious

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Iron heads and you are not a super tuner 9:1 compression will help without more flow but just multi angle valve job and blending the new deeper valve job into the casting really helps- with less than 1/2 inch cam lift putting in what starts off as a 2.02 valve cut down and with 30 degree seats helps (you cut down as going 30 degrees makes it too thin on the edge, and back cut
If you are not going to at least port the 318 heads then milled 360 but I'd try and get the late ones or go Magnums
you can go 9.5 if you rework your vacuum advance and advance curve and have the carb dialed in (but if you get a load of bad gas...)