Ga heads are good. Pretty much any head can be made to flow well (except maybe the Js).

 

Im sorry for interupting but, I was just wondering how hard it was to get those Bonneville seats in the Cutlass?

 

Thanks olds64. Had to take some time off my 455 project to finish and sell my motorcycle project...now I got the money to rebuild the 455

 

SWEET!

 

most people are hot for the c heads, there are others that are said to flow as well or better but are made of onobtaiteum, the c heads can still be gotten for a reasonable price, but all of them can be opened up to flow. Not my personal experience, just regurgitating info from other posts on the forum.