Tailshaft housing broken?

[sethahoward]

Has anyone ever seen this before? I have had a high speed vibration in my car (80 and above). I noticed some slop in the slip yoke, so I took it apart to put in a new bushing and and seal and do the pressurized bushing mod(to feed transmission pressure to the bushing), and I found this.... Not sure what would cause this. Some background on the car: It has a vortech supercharger, 355 horse power and 399 torque, stock 4r70w transmission and 3.73 gears. I drag race it in the summer time, it has run a best of 12.14 @ 115. Any idea what would cause this? Any help would be appreciated. Thanks View attachment 129661 View attachment 129662 View attachment 129663

 

[trinity_gt]

The driveshaft vibration probably did this. The slop in the yoke may have been caused by the driveshaft pounding the bushing and a broken tailshaft housing would be the next to go.

Do you have the stock transmission mount? Very stiff mounts can also put added stress on brittle housings...

 

[sethahoward]

Yes I have the stock mount. I just ordered a frpp aluminum drive shaft. Hoping this will remedy my issue. Along with a new housing.