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05-08-2021 #1
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- Mar 2015
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71 Chevelle Suspension install question/ UMI
Hey fellas! I finally had time to work on the car. I replaced the front upper and lower a arms with UMI (tall ball joints), UMI 2” lowering springs and tie rod adjusters. My question is, when I lower the front down I have crazy negative caster. Well that’s what I think. The top op the wheels point in an outward angle. I know I need to get an alignment but is it good to let the car settle and see what it does? I don’t have any shims in upper a arms and the factory units had two shims on either bolt. I just don’t want to screw it up as I won’t be getting an alignment for a bit. Thanks in advance! I’ll try and get pictures in a bit as well if anyone needs them.
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05-08-2021 #2
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- Apr 2015
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- 89
What you described sounds like positive camber which is not desirable for drivability and tire life. UMI should have included recommendations for new alignment specs (don’t use the OEM specs). There are a lot of good videos on how to DIY an alignment without special tools. These methods will get you close enough to drive until you can get a professional alignment. But it does sound like you’re going to need some shims.
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05-08-2021 #3
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- Feb 2007
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- Tinley Park, IL
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I don't understand this. Point in at outward angle?
Originally Posted by Bigwex
Nick ~ 1969 Cutlass
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05-08-2021 #4
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- Mar 2015
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I figured it was an alignment issue. I just didn’t know if I should let it settle. And by outward angle I mean instead of being straight the tire leans outward. I’ll throw some shims in there after I watch a few videos. I appreciate it!
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05-09-2021 #5
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- Dec 2008
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- Detroit
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Keep in mind that I think the UMI uppers have offset cross shafts which can alter the initial camber. The wheels pointing out is positive camber, you don't want that. Originally Posted by Bigwex
Big dreams, small pockets....
Chris--
'72 Cutlass S LSA/T56 Magnum
Bowler Performance, Rushforth Wheels, ATS, Holley EFI, KORE3, Ridetech
Project Motor City Madness
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05-10-2021 #6
Pro-Touring.com Sponsor
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- Oct 2011
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- Philipsburg, Pa
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Are you upper arms adjustable or non-adjustable? Part numbers?
Also, you can send pics and questions to [email protected] or give us a call on the support line 814-343-6315.
ramey
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05-30-2021 #7
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- Sep 2010
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- corona,ca.
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^^,wonder ifnhes using stock uppersmwith those tall bj?
72 chevelle.
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