Quote:
Like everybody else said and check to make sure the converter bolts aren`t bottoming out, i.e. too long, I had this problem that I kept cracking flex plates, turns out the bolts were one thread too long, we cut them , put loc tite on them , retightened them with an impact thru the starter hole ( Like Mr P body said) and haven`t had a problem since.
I re-read this entire thread, and nobody else mentioned bolts bottoming out as a possible cause. Were your bolts coming loose? That's the problem the OP is experiencing, not cracked flexplates.
Gone to the dark side with an LS3 powered '57 Chevy 210
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