I rebuilt my 2 piece driveshaft and didn't mark the splines where they came out, but I did mark the center U-joint before removal, so I know that is correct.
The automatic transmission mounts were trashed and I replaced them with reproductions from Stude international.
I now get a vibration as I accelerate up to about 40 then a slight vibration at speed.
From what I understand the front shaft should be 90 degrees out of phase between the trans and the middle u-joint.
Is that correct?
I had it balanced in phase but I wouldn't think that would be too much of a problem.
I have the center carrier in the correct mounting holes (upper passenger) per the repair manual.
With the new trans mounts installed what is the angle at the transmission yoke supposed to be at ride height?
I have read that 5 degrees down towards the rear is good and 6 degrees down towards the front is good for the rear pinion angle.
They call this the broken back style I believe.
Looking from the side it would look like the shaft is sagging down in the middle.
What I really need is the correct specs for the trans output shaft and the rear pinion angle so I can adjust them accordingly.
UPDATE: I drove up on a level alignment rack and checked the actual angles.
The Flightomatic is hanging down 7 degrees and the trans is just touching the cross-member.
I don't think that the trans is supposed to be that close..... maybe stude international sent me the wrong mounts?
The differential is hanging down toward the front at 2 degrees.
I lifted the trans with about 3/4" of blocks and I get 6 degrees at the tail-shaft yoke now.
Any info would be helpful
Thanks, Dan
The automatic transmission mounts were trashed and I replaced them with reproductions from Stude international.
I now get a vibration as I accelerate up to about 40 then a slight vibration at speed.
From what I understand the front shaft should be 90 degrees out of phase between the trans and the middle u-joint.
Is that correct?
I had it balanced in phase but I wouldn't think that would be too much of a problem.
I have the center carrier in the correct mounting holes (upper passenger) per the repair manual.
With the new trans mounts installed what is the angle at the transmission yoke supposed to be at ride height?
I have read that 5 degrees down towards the rear is good and 6 degrees down towards the front is good for the rear pinion angle.
They call this the broken back style I believe.
Looking from the side it would look like the shaft is sagging down in the middle.
What I really need is the correct specs for the trans output shaft and the rear pinion angle so I can adjust them accordingly.
UPDATE: I drove up on a level alignment rack and checked the actual angles.
The Flightomatic is hanging down 7 degrees and the trans is just touching the cross-member.
I don't think that the trans is supposed to be that close..... maybe stude international sent me the wrong mounts?
The differential is hanging down toward the front at 2 degrees.
I lifted the trans with about 3/4" of blocks and I get 6 degrees at the tail-shaft yoke now.
Any info would be helpful
Thanks, Dan
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