I was just reading on T/A Creations, that all 88-92 cars with a posi/drum rear end were equipped with an aluminum driveshaft. I've got a 3.23 posi rear-end with drum brakes, but my car shakes like Janet Reno on the highway. Did the third gen aluminum driveshaft still have vibration problems because it's not harmonically balanced like the 4th gen driveshaft? Or do I just have a steel shaft and TAC's info isn't right?

 

never saw an aluminum DS on a drum posi rear in a thirdgen f body

 

heh. i switched to an aluminum fourthgen ds from the stock steel one last december and it helped with vibrations at speeds >85 alot.

 

Okay, thanks. T/A Creations website had that little tidbit on the driveshaft page (I was looking at the prices for the 4th gen aluminum, I'm thinking of asking for it as a Christmas present )

 

The price for a new 1LE or LS1 Aluminum Dr shaft is about $250
from GMparstdirect. I would check out E-Bay for a deal. They do cure high speed vibration problems.

 

you can have your existing driveshaft spun balanced at any driveline shop for about 30 bucks