[Pushit2.0]

This is a 4g63 block with un known miles, about 300 miles at ths power, most of which was just driving around. The block was a 40 over bore, they weisco 9.25:1 pistons were shelf stock with the 40 over.

I have another used block, I will bring it to work and sonic test everything I can. The sleeve idea is out, just a partial fill with hard block. If its only the block and everything else is ok it will be running in spring.

From what I recall it was the #1 cylinder that cracks, and some say its from cut driver side motor mounts. Thus why I made my motor mount bolt on to the front of the block also.

~John