It was right at the 1-2 shift, so 6800RPM. Funny thing is the only sound it made was a "POP", then quit.
Yeah that cast crank was a problem waiting to happen, but I wasn't having any problems up to that point.
Here's what the bottom end of the block looked like.
__________________
Rick
69 Chevelle SS396 Silver L78 M21 Post Sedan (Berger Chev.)
69 Chevelle SS396 Black L78 4-speed 4.10 Post Sedan
Don't text and drive.
Somebody's life may depend on it!