On my '86 CJ7, Chevy 305 / TH400 / "homemade" adapter / D300 / D-44
i used a CV-joint rear driveshaft from Tom Wood.
My driveline is centered (an error on my part), but i don't have any serious vibration problems.
My best suggestion would be to pickup the phone & have a chat with Tom Wood.
He is on http://www.4xshaft.com
He is a real nice guy, and most important, knows what he is doing......
Some other suggestions:
Can you measure how much offset you have in the driveline, and then build-in that amount of offset in the 9" axle ????
Or center the pinion, and remount the driveline along that axis....
From memory, i think the offset in my '86 was something like 1-2"
If i was to the swap again (from scratch), i would *first* make a call to Tom, because what he has to say about driveshafts, influences where you have to mount the driveline, to avoid vibrations....
(If this is a rockcrawler, then it really doesn't matter...)
Since the pinion sits lower on a 9" than on the 44", this would mean an increase in driveshaft angle (over the D44, given that the pinion "length is the same).
I have 4" Procomp lift kit, a rear CV driveshaft of 21.25" and very little vibrations. I have some vibes under accelration, but i think this is because i haven't had the chance to exactly set the pinion angle yet (it has to be inline with the driveshaft). I measured roughly how step it had to be, about 10 deg.
Made up some 10 deg shims, and bolted it all in. I think this is a little off...
Regards,
PerJ (From Norway)
<[email protected]>
Using self-discipline, see http://www.eiffel.com/discipline
i used a CV-joint rear driveshaft from Tom Wood.
My driveline is centered (an error on my part), but i don't have any serious vibration problems.
My best suggestion would be to pickup the phone & have a chat with Tom Wood.
He is on http://www.4xshaft.com
He is a real nice guy, and most important, knows what he is doing......
Some other suggestions:
Can you measure how much offset you have in the driveline, and then build-in that amount of offset in the 9" axle ????
Or center the pinion, and remount the driveline along that axis....
From memory, i think the offset in my '86 was something like 1-2"
If i was to the swap again (from scratch), i would *first* make a call to Tom, because what he has to say about driveshafts, influences where you have to mount the driveline, to avoid vibrations....
(If this is a rockcrawler, then it really doesn't matter...)
Since the pinion sits lower on a 9" than on the 44", this would mean an increase in driveshaft angle (over the D44, given that the pinion "length is the same).
I have 4" Procomp lift kit, a rear CV driveshaft of 21.25" and very little vibrations. I have some vibes under accelration, but i think this is because i haven't had the chance to exactly set the pinion angle yet (it has to be inline with the driveshaft). I measured roughly how step it had to be, about 10 deg.
Made up some 10 deg shims, and bolted it all in. I think this is a little off...
Regards,
PerJ (From Norway)
<[email protected]>
Using self-discipline, see http://www.eiffel.com/discipline
