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Moser 9" is screaming at me

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Old 02-03-2011, 12:55 PM
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Originally Posted by 89L98T56
I was just thinking, I have the stock torque arm, and no LCA relocation brackets..... would severe pinion angle possibly be the culprit?
It most certainly can be.

Last edited by LiT1_up; 02-03-2011 at 12:56 PM. Reason: spelling
Old 02-03-2011, 03:19 PM
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Dahhh idk what to do. I guess the first step will be to check the pinion angle. Can someone help me out with what it is supposed to be and where to measure it from?
Old 02-03-2011, 04:35 PM
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Set the pinion angle using the following method:

Load the rear axle by either setting the car on the ground or letting the car rest on jack stands positioned under the rear axle.

Place the angle finder on the driveshaft and record the angle. The driveshaft angle is negative if it slopes downward towards the rear of the car. The driveshaft angle is positive if it slopes upward towards the rear of the car.

Now place the angle finder on the rear end torque arm mounting plate and record the angle. The rear end angle is negative if it slopes downward towards the front of the car. The rear end angle is positive if it slopes upward towards the front of the car.

Add the two measurements. This is your pinion angle. (Example: -2 rear end angle plus -1 driveshaft angle = -3 degrees)

Turn adjuster to achieve the desired angle.

As a starting point, most F-Bodies seem to like the following initial settings: Automatics: 1-2 degrees negative Manuals: 2-3 degrees negative

Please refer to www.bmrfabrication.com to view the video for setting the pinion angle.
Once pinion angle has been set, tighten all jam nuts and rear bracket cross bolts

good luck,Johnny
Old 02-04-2011, 07:15 AM
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I have seen the stock torque arm bend approx six inches ahead of the rear end. When it bends it bows upward, I had one that was so bad the rear springs almost came out of their spring pockets. Bob
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Old 03-07-2011, 05:01 PM
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Got it all fixed up, the gears had not been broken in properly. Got a new used set installed and it's quiet as church now.
Old 03-07-2011, 06:12 PM
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Originally Posted by 89L98T56
Got it all fixed up, the gears had not been broken in properly. Got a new used set installed and it's quiet as church now.
Glad to see you got it fixed. Bob
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Old 03-08-2011, 08:12 AM
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Originally Posted by 89L98T56
Got it all fixed up, the gears had not been broken in properly. Got a new used set installed and it's quiet as church now.
What brand gear do you have in it now?
Old 03-08-2011, 10:41 AM
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Originally Posted by 96lt4c4
What brand gear do you have in it now?
Ford!!!!! I know crazy right?
Old 03-08-2011, 12:07 PM
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Originally Posted by 89L98T56
Ford!!!!! I know crazy right?
Are they the Ford Racing gears? I heard those are reboxed Motive gears.
Old 03-08-2011, 02:33 PM
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Originally Posted by 96lt4c4
Are they the Ford Racing gears? I heard those are reboxed Motive gears.
I couldn't tell you honestly. The guy charged me $150 for parts and to install the new used gears and he said they were Ford, so IDK.




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