What would a set of AFR 205's milled .020 put the compression at with stock GM gaskets on a stock shortblock?

 

If they're the 66cc version and your milling them .020, that would take them to around 63cc. Which would put your static compression around 10.68.

If they're the 62cc version and your milling them .020, that would take them to around 59cc. Which would put your static compression around 11.24.

 

I did not know AFR made a 63cc head. I thought they were 66cc untill milled?

 

http://www.race-cars.net/calculators...alculator.html