jshelton2006

iTrader: (15)

I am currently doing my MS4 cam install and plan on milling my 241 heads on my 02 SS M6. I would like about 11.5:1 CR. Can i have enough milled off to reach this without intake alignment issues? also how much do i need milled? Car runs on only 93 octane...also will be using .040 cometic gaskets. thanks for any help!

Prerun4fun13

iTrader: (6)

Your gonna have to flycut the pistons for sure

bjamick

iTrader: (31)

Ya you will have to flycut most definitely, as for the milling i've heard of some milling like .030. If you really want to get your compression up there go with a milled set of 5.3 heads .

jshelton2006

iTrader: (15)

Yeah i know i'll have to flycut, i planned on it anyway just to be safe. I don't have any money for heads right now, so i just want to get as much hp as possible while doing the cam swap. Has anybody milled more than .030"??