[Alan Roehrich]

Tom, my only point was if that if a racer is cracking cases that did not start off cracked, changing the bellhousing is not necessarily going to solve the problem, and it may only make the case break somewhere else.

When I was the manager of the racing side of a very successful transmission shop, I found that it was extremely rare for a case to break of its own accord. The vast majority of problems, as you said, were due to either chassis flex, or motor mount problems, although we did find a few driveshaft problems.

A big concern is that if the bellhousing is breaking, and you replace it with a stronger bellhousing, and don't resolve the cause of the breakage, the next place it breaks is behind the pump, and that creates a fluid loss hazard that can cause a crash and/or a fire.