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#1 |
Registered User
Join Date: Aug 2004
Location: olympia wa
Posts: 33
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correcting pinion angle
Hi all! I was wondering if anyone could let me know how much correction is necessary for a 5.5 inch rear drop. I bought a cheap angle finder but my understanding is the vehicle needs to be level and have full weight on its suspension to check the current angles. theres not too much room to get under it w/o a lift. just wondering if anyone had a personal experience with this type of situation. also where is a good place to buy the angle shims for our trucks? (burbs) I have a noticeable vibration at 35-45 mph and the driveshafts have been balanced and new carrier bearing and u joints are installed, so I'm assuming it must be an angle issue. thanks for the help, steve
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#2 |
Senior Member
Join Date: Jan 2005
Location: Loveland Co.
Posts: 3,098
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Re: correcting pinion angle
Your shake could be a tire issue. I've got a 6'' drop and don't have any issues, I figure if there were the aftermarket would include shims with the drop kits.
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Chris 74 Custom Deluxe SWB 350/350/3.73’s 99 2wd Silverado RCSB 5.3/4L60/3.90’s http://www.classictrucks.com/feature...short_bed.html |
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#3 |
Registered User
Join Date: Sep 2006
Location: Covington, WA
Posts: 770
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Re: correcting pinion angle
Ya, My axle layed on the frame when bags were dumped (I drove this way sometimes) and never had vibration issues. I would definitely look at the tires and have them balanced, and if not that I'd check your driveshaft to see if it's balanced, because those IMO are more likely.
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#4 |
Senior Member
![]() Join Date: Jul 2005
Location: MISSOURI
Posts: 3,256
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Re: correcting pinion angle
May have a needle bearing out of place under a u joint cap, an engine mount may be dalapidated or broke,
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The biggest problem people have, is other people Thou shalt be cool and not hassle ![]() Be a site supporter. ![]() The heart of the wise inclines to the right, but the heart of the fool inclines to the left." Ecclesiastes 10:2 |
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#5 | |
Registered User
Join Date: Apr 2007
Location: Dallas
Posts: 156
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Re: correcting pinion angle
Quote:
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#6 |
Registered User
Join Date: Aug 2004
Location: olympia wa
Posts: 33
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Re: correcting pinion angle
it's a coil spring trailing arm setup. tires are new and balanced, so I'm fairly confident they're ok although I know anything is possible. I have a neighbor who developed a vibration after dropping the rear of his 1990 swb 4 inches, and it turned out to be a pinion angle problem that was corrected with 2 degree shims. that is why I'm looking into it. thanks again for any input!!
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#7 |
*************
![]() Join Date: Apr 2005
Location: Pensacola, FL
Posts: 17,846
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Re: correcting pinion angle
I've got bags (ART), c-notch and a 1 1/2 lowering blocks on mine and so far have not had any vibration issues. I think you might be able to adjust the position of the carrier bearing instead of using shims.
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Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3 Last edited by Hart_Rod; 04-26-2007 at 04:09 PM. |
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