904's can blow up just like 727's same power flow just smaller lighter parts.
Failure to 904 drum “possible” but I’m betting the rpms required to achieve this phenomenon are up there with the aftermarket 727 parts due to its smaller size basically putting it above a threshold that we’d seldom see. In my conversations with a couple of shops that have been in the game awhile neither have encountered this happening to a 904.
Never seen or heard of a stock 904 drum blowing up. However, that doesn't mean that normal precautions like making sure the roller clutch parts are in perfect condition, use of LBAVB where they should be, proper burnout and driving procedures, inspection of the trans after a driveline failure, etc., because they will fail and tear up parts and possibly the case.
