fly cutting? Changing my compression?

[cantbuytime]

My car is an 1995 50 GT, stock bore, stock pistons, stock bottom end.. the motor has been freshened up and in the process it has been zero decked.

I am going with a 2.02/1.60 valve aluminum head. I know i have to fly cut the pistons because I have .035" PV clearance.. That was checked without a head gasket.. using an E cam and 1.6 RR's but I want to use 1.7 rr's

I am also trying to get to 10.5:1 compression ratio

Now by fly cutting my pistons, I am assuming that Its going to lower my compression by a large amount..

My questions are

how do i determine how many CC's this will add by fly cutting?

How deep can i fly cut the stock piston??

when i mill my heads to make up for the valve releifs i cut, wont this make me have to fly cut the exhaust valves as well and therefor just set me right back to where i was on compression before I milled the heads??

 

[Tanus]

your not gonna get 10.5 with stock pistons unless your heads have super small combustion chambers.
talk with the machine shop that decked your block

 

[cantbuytime]

I figured anything over 9.3:1 with stock pistons would be lucky with 60cc heads?

I am going to use the 86 HO flattops and cut valve releifs. Anyone know how to tell what cc the heads need to be to get to 10.1 compression