GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

Something Strange with these angles (another pinion question)

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Old Jul 29, 2009 | 08:06 AM
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Old Jul 29, 2009 | 09:52 PM
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well, if i was measuring my angles right my front pinion angle would be -8.5 and my rear would be -11?

(according to the drawing..)
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Old Jul 30, 2009 | 11:09 AM
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Old Jul 30, 2009 | 12:57 PM
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drop your carrier bearing until the front half of the driveshaft matches the angle of the output shaft of your transmission. if your pinion angle was taken on level ground with all of the vehicles weight on the suspensinon raise your pinion angle between 1-3* depending on your traction aides and power level.

if it begins to vibrate, raise the carrier bearing a little until it stops.
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Old Jul 30, 2009 | 06:22 PM
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the only way i could make the front half of the driveshaft parallel with the transmission, i would have to drop the djm carrier bearing bracket like 4 inches... and then i would have no way to bolt it on..
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Old Jul 31, 2009 | 12:59 AM
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how are you measuring the angle of the output shaft?
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Old Jul 31, 2009 | 01:44 AM
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Are the 2 piece driveshafts single cardan or double cardan?

If its a single, then it being at such an angle could lead to cyclic thrusting due to the way a cardan joint works. Because of the angles of the joint, accleration of the shaft is cyclical, not linear. A double cardan eliminates this since the joints are offset 180 degrees.

...or maybe im just rambling...
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Old Jul 31, 2009 | 10:26 AM
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Originally Posted by TXsilverado
how are you measuring the angle of the output shaft?

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Old Jul 31, 2009 | 07:11 PM
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Old Aug 1, 2009 | 05:06 PM
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