SINISTER68
05-28-2010, 05:16 AM
Has anyone done anything to their fast burn heads? I have read not to port them. Thats not a problem since I have never done it before but I am willing to polish them. Is this worth doing to a band new gm engine? I have to change the rockers and springs anyway because I bought the 1.6 roller rocker kit with the hot cam. I would love to have 450hp so is the polishing of the heads to a zz430 clone worth it? :idea: