I doubt it's those. They don't hold a load really. Weight is all on the wheel bearings. They are more of a guide.

 

I doubt it's them either, but they are moving parts.

Have you pulled the front propshaft to see if the vibration goes away?

 

No but the drive shaft was not vibrating running on the lift

After my long drive it only vibrates bad under accel 30-40 MPH

If I hold around 35 it is constant and does not go away

It feels like I am driving on those rumble strips on the side of the road sounds like it too

But only at that speed, was not this bad with the vibration damper on there

Think I might need to address the angle of that front rear, maybe go to a d2 front shaft

 

Yeah, but running it on the lift can only go so far towards mimicking on the road. Plus it's something that is easy to rule out. Probably the easiest, certainly the cheapest.

 

Yea on a lift suspension is at all different angles because it has no load. My money is on that diff angle/ front shaft.

 

We had it lifted by the axles so full load on suspension

My front pinion angle is so much it points directly at the xfer case

 

Driveline Geometry 101

 

OK by that site my pinion angle is fine if I had a d2 front shaft, but my caster is off quite a bit

So do I change my drive shaft style or fix my pinion angle or both? This is my dd so it needs to drive right

 

Start by pulling the frint shaft amd see if the vibration goes away.

 

Update, I did reseat the front wheel bearings they were a little loose, no change, I have a d2 front drive shaft to try just need the tc flange