Jacktuner

Ive got some stock ls3 heads milled 20 thou, can anyone tell me what roughly the chamber cc's would be after the mill? Thanks

blake b

iTrader: (11)

Stock LS3 heads are 68cc +/- 1 cc. So your heads were 67-69cc prior to milling.

.006=1cc

So, your heads being milled .020 means they lost 3.33cc. Your new chamber size is going to be 64.67 +/- 1 cc (63.67-65.67cc)

If it were me, I'd just take it they were 68cc prior to milling and call them 65cc now for mathematical purposes...