Did a few measurements and looks like the cylinder has not been bored - measures 3.125" about 1" from the bottom and 3.128" at the top. The piston skirt measures 3.115 so there is definitely some wear on the piston. Measured the crank diameter where the rod goes and at the outer edges it measures 1.376" on one side and 1.375" on the other but if you move in about 1/8" from either end it measures 1.373" and in the centre area it is only 1.370" so the crank is worn in the centre area as I believe it should measure the same all the way across. Will have to consult with a machine shop and get their opinion on things and see what my options are and then with my banker.
Edited by 29 Chev, March 11, 2017 - 02:41 PM.