Ive a stout 318 (326) short block and am starting with a set of J heads that have had zero port work, not even gasket matching yet.

They have been cut for 2.02s from the 1.88s with the nice 3 way bowl cut, nail head ss valves, decks milled and around a 66cc chamber.

Cams a 280adv solid .510 lift, intake is stock 6bbl off my t/a while it sits. Deep gears, mild vert, auto.


SO..... since its no more then a 6500 rpm motor, what porting mods other then a casting cleanup and gasket match would YOU do if it was your build?

Im wondering what would help the lower lift numbers on these heads?

Thanks.