LS6427

iTrader: (2)

I'm no tranny expert, I'm just going through the same thing you are and trying to figure out why I also broke my tranny tailshaft housing when my driveshaft let go. Or whatever it was that actually let go first.

If you have a crossmember mounted torque am I think its pretty obvious that your shaft broke in the rear first and not at that broken ujoint. Because how else could there be enough energy distributed to your tailshaft to flex the tailhousing and tranny case to break them both. The shaft had to have been banging around just enough before that ujoint broke to stress them both to break.

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john563

iTrader: (17)

I had my tailshaft break on the dyno with my stock trans,so I just ordered a RPM level 4.

Well on the dyno my drivshaft, T.arm and the tailshaft/input shaft broke on my new RPM transmission..
Thank God! the guys at RPM took care of me and fixed it and shipped it back asap at NO charge..

I put on a new BMR adjustable T.arm and PSTdriveshaft and never happened again

Again Thank you RPM!

camaro383

iTrader: (13)

Got tranny out today