does

does any one no how much you can mill off 5.3 head useing 570 lift cam and 7.4 push rod 202 intake vavle and be safe

Sales4@Texas-Speed

iTrader: (4)

What is the duration on the cam? That determines piston to valve more then lift on the cam does.

does

228 230 sorry

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this is the comp cam 228.230 570 571

Sales4@Texas-Speed

iTrader: (4)

I would think you could safely cut those heads .020" with that cam. Maybe farther but you would definately want to measure your piston to valve to make sure you will be ok. Once milled .020" the heads should be at a 60cc chamber.

does

thanks man what would you guys charge to cnc port these heads

Sales4@Texas-Speed

iTrader: (4)

Right at 750 for CNC port and CNC valvejob. We can also put larger valves in for an extra $200 if requested.