Front and rear (rear) driveshaft joints are different?

[89Vette]

Just got back from reinstallation and a drive. This was the primary source of vibration I've been chasing since ownership!

Much better!

[Ldub]

Just got back from reinstallation and a drive. This was the primary source of vibration I've been chasing since ownership!

Much better!

Glad you finally tracked it down...

[samneil2000]

Glad you finally tracked it down...

x2

[LittleBeast]

But be cautious, replacing/rebuilding my driveshaft fixed my vibrations for a while, but they came back and until I corrected the angle of the rear pinion angle the vibrations would always come back eventually. Mine used to even go away for a few days after greasing the U'joints and spline on the driveshaft.

In the future just call Independent 4x. One 5minute conversation with them and I knew what I needed to order and from who and that the Ujoints are different, but my driveshaft shop didn't even need the info they just took measurements and had Ujoints in stock and fixed it up same day :-)

Sorry I didn't see this thread earlier. I hope your vibrations do not come back but if they do, look at adjustable lower links for the rear to correct pinion angle problems.

[89Vette]

But be cautious, replacing/rebuilding my driveshaft fixed my vibrations for a while, but they came back and until I corrected the angle of the rear pinion angle the vibrations would always come back eventually. Mine used to even go away for a few days after greasing the U'joints and spline on the driveshaft.

In the future just call Independent 4x. One 5minute conversation with them and I knew what I needed to order and from who and that the Ujoints are different, but my driveshaft shop didn't even need the info they just took measurements and had Ujoints in stock and fixed it up same day :-)

Sorry I didn't see this thread earlier. I hope your vibrations do not come back but if they do, look at adjustable lower links for the rear to correct pinion angle problems.

Yours is lifted though....Currently, mine's not. OTOH, I was curious how high I can lift w/o issues. For example, I was considering a 1" or 2" helper-cup (vs springs). Of course, crank the front a couple of turns.

My front u-joint was really bad. Like it had never been greased in it's life (except the once I did it during my 1 year ownership).

I'm also curious how much (extra) travel the slip joint has for lengthening travel of the driveshaft. (Kinda makes you wonder if lifts are as easy as some posters make it out!)

[Ldub]

I'm also curious how much (extra) travel the slip joint has for lengthening travel of the driveshaft. (Kinda makes you wonder if lifts are as easy as some poster make it out!)

Never heard of anyone "dropping out"...least wise, not from lifting.

I dropped out once, but I hadda get sideways into a tree, breaking the weld on the R side lower link & moving the axle back, to do it...

[LittleBeast]

Yours is lifted though....Currently, mine's not. OTOH, I was curious how high I can lift w/o issues. For example, I was considering a 1" or 2" helper-cup (vs springs). Of course, crank the front a couple of turns.

My front u-joint was really bad. Like it had never been greased in it's life (except the once I did it during my 1 year ownership).

I'm also curious how much (extra) travel the slip joint has for lengthening travel of the driveshaft. (Kinda makes you wonder if lifts are as easy as some posters make it out!)

Ah I see. Well then great fix :-) Sorry I was assuming you were slightly lifted already.

I lengthened the lower links almost a full inch and I could not see the threads, but then I lengthened another turn and you could begin to see the spline coming out of the rubber cover thing. I had the driveshaft place look at it and he said he can lengthen the shaft for me, so that is on my to do list.

[89Vette]

Ah I see. Well then great fix :-) Sorry I was assuming you were slightly lifted already.

I lengthened the lower links almost a full inch and I could not see the threads, but then I lengthened another turn and you could begin to see the spline coming out of the rubber cover thing. I had the driveshaft place look at it and he said he can lengthen the shaft for me, so that is on my to do list.

Keep in mind it comes out further when the rear axle drops during use.

As for the fix, I wonder if I should post in the Talk forum. It would be interesting to see how many people might be ignoring this problem. The other unit I've driven in town also had some vibration in the rear (though I could only feel it vs hear it.) Seems like his could use a new u-joint or two. And, he's got a 3" lift with links.

The other reason to post in Talk is I originally thought the characteristic vibration of the 6VE1 around 2200-2500 rpms was transmitting thru the drivetrain. I had a whole big thread on the vibration about a year ago. Any repost would serve to resolve that issue/thread.