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Old 01-10-2013, 11:29 AM
1brewmaster1 1brewmaster1 is offline
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Transmission and Pinion Angles

Can some one PLEASE set me straight on setting the proper angles on the output shaft of the transmission and pinion. I have read so many discussions about this and it becomes confusing to understand.

1951 Chevy Pick-up, 700R4, leaf springs, 1972 Chevy truck differential.

Everything was fine until I replaced the leaf springs. The original springs were pretty flat and the new ones are bowed properly. I now have a rake to the front end. It now vibrates at 65-70. Previously, I set the transmission at 3* down and the pinion at 3* up and everything was fine. Now, I can't raise the transmission far enough to get to the 3* down position. Currently the transmission is at 7* down. I did not build the truck so I am stuck with what I have. If I raise the transmission any further, I pick up all kinds of rattles and vibrations from the drive line touching the body.

Can I keep the transmission at 7* down and set the pinion at 7* up to cancel harmonics?

Thanks in advance for your comments.
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