Max bore size on 340 Resto Block

rustycowll69 said
I assume that since it's 4 bolt mains, it has filled pan rails, kinda like the 340 6pak blocks? do you have better pics of the bottom end? I assume the big "R" means race block

Here is a pic from when i got it.
Yes it has dilled pan rails ;-) will bore it from its ruff 3,91 to 4,04 and building a real stroker. Aiming a about 700+hp NA