My son and I just bought a small block Chevy 400 cu. in. engine for him to rebuild and install in his '79 El Camino. He's heard that .030 is the max. you can overbore this block. Haven't got the heads off yet and we don't know if it's standard bore or not. Anyone know if this .030 max. overbore information is true? Thanks for any help.
Garrett Fulton