Hi, I have a numbers matching 400 in my 1970 GTO. Doing a restoration on the car so we pulled the engine to go thru. The shop says it has been bored 30 over and 8.5 pistons installed in the last rebuild, don't know the cam. He said by the bearing numbers it looked like it was rebuilt around 2001 or so. He says it is showing some wear.
My question is what would be recommended rebuilt if I just want to get back to stock or a little more, run on pump gas, idle and start nice but be able to light them up once in a while? It's an A/C and Auto Car.
Thanks so much for your help