Ok i blew my drive shaft a while ago when i was getting my truck dyno tuned. Since then i have gotten a brand new 1 piece DS from drive shaft specialist. I didn't drive the over 75 or 80 since that happened until last night. me and my buddy was playing around with his sts and in between 90 and 100 mph i started feeling a bad vibration like the DS was gone blow or something. also the brake and abs light came on so i backed out immediately. what could the problem be? and man that thing pulls hard on the big end.

 

Go and have them remove it and hs balance it again..check all fasteners and if you are lowered, check for interference..Did you break your tailshaft on the last one? check to see if it is ok as well..

 

Also check your pinion yoke mine had a hairline crack in it when I broke my driveshaft.

 

Tails haft on the tranny? yes i did. The truck is lowered a little in the rear. also ive been noticing that while driving normal the rear end seems to be bouncing from time to time. kinda feels like wheel hop. the previous owner has drop shackles, and removed the load leaf to lower the truck.

 

How much travel is there in the slip yoke when you get the shaft installed? Should be about an inch left of the yoke before it would bottom out in the tailhousing.

 

No, the other end of the drive shaft where it connects to the rearend.

 

Not sure what your saying. you saying that it should be an inch of shaft out of the tail shaft before or after it bottoms out? i'll have to check that.

 

No i didnt break that. i did look it over at that time and it looked fine. will check again though. Could it be a possibility that its slightly warped and would only cause vibrations at high speeds?