changed heat treat process and are breaking. made before june 03 are ok

 

And the Group Purchase is where?

 

This definately does not belong in the GP forum.

And a off the wall claim with no info to back it up....well, I'm not even going to let this thread continue. If you have something productive about the subject to say, with something to back it up, start another post in the proper forum (one of the engine forums, such as LT1 or LS1 tech). But I'm not going to toss this in one of those forums, as it is definately flame bait.