Losing my mind over driveline vibration

[WhiteLightningnshitshadow]

I've had this slight driveline vibration between 50-60mph for a little while now after removing the flat rear blocks and tried a few things. I did confirm problem is much reduced with blocks in, but the pinion angle is the same! I don't have an inclinometer, but the angles seem to match.

I figured on trying 1 degree belltech shims, so I spent all day today trying them both ways. I still had vibration with the shims. I'm about to give up with this thing and take it to a driveline shop.

I would almost consider putting the blocks back in, but more than ugly rake, it doesn't handle or brake nearly as well. Plus the bed height is way too high.

Anyone else run into this?

Sponsored

 

[WhiteLightningnshitshadow]

Okay I solved it. I picked up an inclinometer and found the difference was almost 2.5 degrees. Pivoted the pinion upwards and it's acceptable. This is very sensitive it seems.

 

[Gros Ventre]

Well... this is a big deal for some. That vibration would eventually damage something. Keep in mind that even though it goes away above 60... it is really still there as far as the driveline is concerned, thus damage is still being dome.

 

[diambo4life]

That's weird because I do not have *any* vibration at all and I removed the blocks and lowered the rear another 1.5".

 

[WhiteLightningnshitshadow]

That's weird because I do not have *any* vibration at all and I removed the blocks and lowered the rear another 1.5".

Yeah I could've swore there was no vibration for the test runs. It was only under load or tip in from 50-58ish mph. I can't explain it.

Sponsored