[redmt]

I guess I've been lucky. I've never had a 105 block not pass a sonic to 4.122. We punched them out way before sonic was available to us, and did some pretty radical builds. I've blown a few but never to a block issue. Like I said, I've been lucky. I've heard plenty stories from guys who windowed blocks. I have a 105 now that ran for 30 years of abuse. It has .007 taper and did a sonic check for a rebore. It won't make it safely.