Ok i have a set of stock lt1 heads with a 3 angle vavle job and ported/polished.what cc head would this be?need to no to get pistons.thanks alot

 

stock combustion chambers are 58cc on a LT1 54cc on a LT4

 

I had CCed my heads after I did work to them and there only at 56 now and the chambers are layed back some, I had put new seats in there and 2.055/1.625 valves in mine so the valves take up a little more than stock, I would think that mine would have been right around 56 sence the valves make up for what I layed back. the only way to tell tho is to pull yours and CC them every set is diffrent, Ive seen from 54-57 on the 3 sets of stock heads that I did so far.