6.6 liters (403CI) or thereabouts with a 4 inch throw crank. Depends on how much the machinist has to take out to round out the cylinders a d clean up the walls. There was some deterioration on the sleeves but it isn't bad at all.
Who did your tuning? And what are you running?
That is the most important part of the whole thing really. The LS is pretty finicky when it comes to the tune and such. 11:1 shouldn't be too bad. But I may go down a half point. Haven't decided yet.
Herr is the vendor I am thinking about using... Best price I could find so far but I'm going to check with my machinist first, see if he can beat the pricing...
http://www.flatlanderracing.com/k1-wiseco-02.html