Pinion angle help.

oldkimmer said

If the noise is at any sort ur gears are not set up correctly. U don't want the pinion up +1 if ur tranny is at -1. Then ur up 2 degrees on acceleration. U want the angles to cancel out , not counteract. So what I'm saying is that if the tranny is -1 u want the pinion down -1 under hard acceleration. So set the pinion to -3 or -4. Kim

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Here is the whole story.. The rear end was set up the first time and then one of the bolts in the pinion yoke was broke off, so the pinion was removed and another was installed. Then the rear was put together and put under car. Then it was driven and a noise on acceleration and deceleration was heard. was told the pinion nut was too lose so nut was tightened, and noise on deceleration stopped but noise on acceleration was still noticed. was told the rear needed to be re-setup. It was, and put back in and driven and noise on acceleration was still there. So, I took it apart again and took it to be re-re-setup. It was and put back in and same thing.. Noise on acceleration. So , I re checked the pinion angle and it is -3 degrees. The noise must be in the rear-end, because Before putting this 8 .75 rear in car it had the 7.25 rear in and driven a little while with NO noise.