Low 14s, high 13 seems about right. If you want to pick up some cheap speed, add headers or a stouter* cam. You'll have to be careful with the cam though - if you go with too high of a lift you'll need to replace valve springs and could have valve-to-piston clearance issues.
Good luck.

"When I'm in a slump, I comfort myself by saying if I believe in dinosaurs, then somewhere, they must be believing in me. And if they believe in me, then I can believe in me." - Mookie Wilson