I'm a little worried about the cylinder wall thickness. The machine shop bored my 1998 360 30 over, and I think max bore is 20 over. I wanting to push the limit, trying for 600hp with NOS, Is it safe to use this block?
s/b - but the only way you will know with some reasonable assurance is to have the wall thicknesses sonic checked. A good machine shop would have done that first.