[andrewb70]

After I replaced the pinion yoke the vibration got better but it wasn't totally eliminated. I put about 2000 miles on the car after I swapped pinion yokes.

Andrew

[HWYSTR455]

I'm watching curiously, and impressed with the parts selection. Looking forward to hearing about the results! Know how frustrating stuff like this can be first hand!

.

[gearbanger]

Okay, well, you were saying that it got alot better and still vibrated in 6th a little. I hope the tranny redo will solve it. Any chance you will give it a try with the original driveshaft before swapping to the new CV shaft?

[andrewb70]

Originally Posted by gearbanger

Okay, well, you were saying that it got alot better and still vibrated in 6th a little. I hope the tranny redo will solve it. Any chance you will give it a try with the original driveshaft before swapping to the new CV shaft?

My old yoke had more run out than was desirable. I forget the exact numbers, but they are listed earlier in this thread. I swapped to a different yoke and the runout was better, but the vibration persisted, although at a lower level. I may be able to try the old shaft as a fall back if the new shaft is not ready for my planned road trip. When my transmission failed the slip yoke got damaged as well. So for me to install the old shaft I would have to swap the slip yoke. I would rather not incur that extra expense if I don't have to. I seriously doubt that the transmission was the cause of the vibration. The vibration was there even when the transmission was new.

Andrew

[andrewb70]

Originally Posted by HWYSTR455

I'm watching curiously, and impressed with the parts selection. Looking forward to hearing about the results! Know how frustrating stuff like this can be first hand!

.

Thanks! I am looking forward to the results as well. Frustration can be a very powerful motivator. In my search for answers I ran across the attached PDF from Spicer. It has some very interesting information on page 9 and 10 about compound angles.

http://www.pro-touring.com/%7Eandrew...11-1-HVTSS.pdf

If the rear end in my GTO is offset it may not cause a vibration by itself, but it can certainly contribute to the compound working angle.

Andrew

[6 Grrrs]

Originally Posted by andrewb70

Thanks! I am looking forward to the results as well. Frustration can be a very powerful motivator. In my search for answers I ran across the attached PDF from Spicer. It has some very interesting information on page 9 and 10 about compound angles.

http://www.pro-touring.com/%7Eandrew...11-1-HVTSS.pdf

If the rear end in my GTO is offset it may not cause a vibration by itself, but it can certainly contribute to the compound working angle.

Andrew

Nice find and great read.