tko 600 strength

[66chad]

I recently installed a proshifted tko 600 in my 800 h.p car. The casing busted within the first 10 mins. all four bolts by the input shaft. This trans has cyro treated gearset upgrades on the forks/linkage face tooth engagement with no synchros. The driveshaft has the correct end to end movement. I had not installed the trans. girdle yet. I know what a dumb move but I was not on a drag strip with alot of traction. Now can somebody tell me if this trans will work or if I fix it will it do it again. I was running the car at about 6000rpm. This car is a street car that will see little strip action.

Help Please