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10-12-2024, 06:32 AM
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#1 |
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Registered User
Join Date: Oct 2018
Location: Ontario Peterborough
Posts: 787
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Alignment specs
Anyone lowered their 1989 gmc 3500 dually and have any specs on it ???
Had mine done and they went by original height specs , something in the handling doesn't seem right , feels like it's skating a bit . I didn't lower it so I don't know how much Here's a picture maybe you can tell by it |
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10-12-2024, 10:02 PM
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#2 |
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Registered User
Join Date: Dec 2015
Location: Beaver Falls, Pa
Posts: 168
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Re: Alignment specs
There are several factors that need to be studied. First, Did the shop provide you a print-out of where the suspension is at this point...the "after" specs? If so, post them up.
Second, looking at the picture you posted, that front wheel is noticeably "back in the hole" of the Fender. Id think its every bit an inch off of where it belongs. Are both sides looking the same? 3 things (or a combination of) can create that. (1) The frame is bent in the curved, kick-up area between the suspension & the firewall (2) The upper ball joint is back (thus likely creating more positive caster as a result (3) The lower ball joint is back (thus likely creating a more negative caster than desired) which could give a "darty" and less proper feel of going straight as speed increases. The other thing to study is the angle on the tie rods from center link to the knuckles. That should keep you buzy for a few moments, HaHa, Lorne |
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10-14-2024, 06:19 AM
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#3 |
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Registered User
Join Date: Oct 2018
Location: Ontario Peterborough
Posts: 787
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Re: Alignment specs
No print out
Must be the way of picture it's not back in the hole Frame not bent The rest all seems to be good I think I will take it back to the alignment center and see what they can come up with |
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10-14-2024, 07:16 AM
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#4 |
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Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,214
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Re: Alignment specs
You might also try posting in the 88-98 section for the GMT400 audience.
You've got this in the squarebody section. K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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10-14-2024, 12:24 PM
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#5 | |
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Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,042
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Re: Alignment specs
Quote:
That being said, here are decent specs to follow: Camber: Street: -.5 degrees Caster: Street: +3.0 to + 5.0 degrees Toe: Street: 1/16” to 1/8” toe in The Caster on my '99 3/4 ton obs ended up @ 4.1/4.2 when targeting the -.5 Camber. Drives like a Sport Truck vs a work truck.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. Last edited by SCOTI; 10-14-2024 at 12:32 PM. |
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10-15-2024, 05:54 AM
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#6 | |
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Registered User
Join Date: Oct 2018
Location: Ontario Peterborough
Posts: 787
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Re: Alignment specs
Quote:
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