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I think it is different depending on the intake. Like a 772 is cloverleaf as a 420 would be square. Don't know for sure.



UNC OUgh

The version you go with depends on what you prefer with your combo. Some intakes have less meat to mill out and end up very narrow on the sealing surface. My 772 is very thin with an open plenum. But, 468 CID with a good dose on a plate system will not want a cloverleaf. If the thin gasket area scares you one can always build the outer flange up with alluminum. I had no issues and was faced with a no external welding rule in the class. I tried cloverleafs but did not like with my combos.

Career best 8.02 @ 169 at 3050# and 10" tires small block power.