Garys1969RR
Well-Known Member
I picked up a 400 motor, 230 block. Got it apart, and the bore is measuring 4 13/32". That's 4.403! Looks like it is is .060 over size. ARRRGGG! This has the big main supports, and I was planning to use it on my 512 build. Cleaned the piston top off, and it has 60 stamped on it! Does that mean .060 OS? Dang. Any way to salvage this block? Sleeve it, fill the water jackets with block fill? Help! Here's a pic of the piston top.