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thanks guys.i am going from iron 346 flowing 280 at .600 and the BS are said to flow 330+ at that.these heads will give me plenty of room to grow and be repairable.any1 know what the cnc ported heads flow?



Who ported your heads?

Dwayne ported mine and they go 325 @.600.

BTW, the out of the box numbers are junk on the BS heads. OOTB, the low and mid lift numbers are horrible.......to say the least.

I think Scott Brown used have flow figures on his website of some CNC'ed BS heads. I think they were close to 350 at .600.

72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.