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

lowered 4wd pinion angle...

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Old Feb 28, 2006 | 07:17 PM
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Default lowered 4wd pinion angle...

for those of you that removed the 2" rear block on their 4wd, did you change your pinion angle? if so how much shim(2 degrees, 4 degrees) did it take to correct? haven't measured mine yet but my pinion is "nose up" in relation to the driveshaft rather than nosed down. thanks.
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Old Feb 28, 2006 | 08:13 PM
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I havent pulled my blocks yet, but I put on some drop shackles. I never even checked my pinion angle. Its been like this a little while, and I havent had any problems.
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Old Feb 28, 2006 | 08:20 PM
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On this site the guy took out the blocks AND 2" drop shackles. The only thing I could find remotely close to your question was this...

The two-inch reduction in rear height provides a more neutral stance, eliminates axle wrap during part throttle launches, and drops ten pounds of unsprung weight. This is an inexpensive and easy mod that I would recommend to anyone with a 4x4 regular cab unless they plan on utilizing every bit of this trucks 9200-pound towing capacity.
But I may have missed something, I dont recall him mentioning pinion angle, so i dunno.
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Old Feb 28, 2006 | 11:41 PM
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i have a 6 inch drop and havent changed mine, shackle, hanger, moved block to top of leaf b/c im to cheap to get shorter u bolts. my light stays on b/c of this so i guess ill have to do something but not really worried right now.
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Old Mar 1, 2006 | 12:21 AM
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what light stays on, the ppa light? poor pinion light?
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Old Mar 1, 2006 | 12:21 AM
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what light stays on, the ppa light? (poor pinion angle)
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Old Mar 1, 2006 | 04:57 AM
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Originally Posted by 03lowriderss
what light stays on, the ppa light? (poor pinion angle)
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Old Mar 1, 2006 | 09:08 AM
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my ses light, i think it has something to do w/ the angle, it could be my cats, ill pull up the code later today and let you know
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Old Mar 1, 2006 | 10:21 AM
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Your ses light shouldnt be affected by the pinion angle.
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Old Mar 1, 2006 | 03:44 PM
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yeah thats what i am thinking too, but ill let you know what codes im throwing
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