Lower control arm installation - The 1947 - Present Chevrolet & GMC Truck Message Board Network

FL71C10 · 09-08-2011, 04:28 PM

When you re-install your lower control arms, how do you know where to line the CA as far as the little u-bolts go. Is there only one way they can be installed? I'm concerned I won't know how far back or forward to put them.

biggestjohn · 09-08-2011, 04:46 PM

I set mine to the wheel base (133" on my longhorn) I used a c-clamp to hold the tape measure, then set to the centerline of the lower ball joint. Don't forget to subtract half of the diameter of the rear axle tube.

eightbanger · 09-08-2011, 05:09 PM

It should have a small indent on the CA shaft (see pic) that in turn locates on a nipple on the underside of the crossmember, then just tighten up your u-bolts, and provided your shaft is centered on the CA thats all you need to do.

gcburdic · 09-09-2011, 03:53 PM

eightbanger is right on the money!!!

FL71C10 · 09-11-2011, 07:45 AM

Thanks, guys!!

09-08-2011, 04:28 PM	#1
FL71C10 Registered User Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Lower control arm installation When you re-install your lower control arms, how do you know where to line the CA as far as the little u-bolts go. Is there only one way they can be installed? I'm concerned I won't know how far back or forward to put them. __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

09-08-2011, 04:46 PM	#2
biggestjohn Registered User Join Date: Apr 2010 Location: Russiaville Posts: 203	Re: Lower control arm installation I set mine to the wheel base (133" on my longhorn) I used a c-clamp to hold the tape measure, then set to the centerline of the lower ball joint. Don't forget to subtract half of the diameter of the rear axle tube.

09-08-2011, 05:09 PM	#3
eightbanger 454 MAKES IT ROAR Join Date: Jan 2008 Location: Essex, U.K Posts: 2,701	Re: Lower control arm installation It should have a small indent on the CA shaft (see pic) that in turn locates on a nipple on the underside of the crossmember, then just tighten up your u-bolts, and provided your shaft is centered on the CA thats all you need to do. Attached Images __________________ Nigel. An American living in a British body. 1971 Chevy Cheyenne 10 454 "In a time of universal deceit, telling the truth becomes a revolutionary act." - George Orwell "When injustice becomes law, resistance becomes duty" - Thomas Jefferson No more pain. 03.12.60 -- 12.28.10 http://www.youtube.com/Eightbanger

09-09-2011, 03:53 PM	#4
gcburdic Restoration Virgin! Join Date: Jan 2008 Location: Huntersville, NC Posts: 8,298	Re: Lower control arm installation eightbanger is right on the money!!! __________________ Geoff with a G 1968 Chevy C10 SWB The Mistress 1972 Custom Deluxe C20 Suburban A Suburban Named Isabella 1966 Ford Mustang Mama's High School Graduation Present

09-11-2011, 07:45 AM	#5
FL71C10 Registered User Join Date: Jun 2010 Location: Orlando, Florida Posts: 2,508	Re: Lower control arm installation Thanks, guys!! __________________ 71 Chevy C10 Shortbed Stepside. LT1 with 4l60E. Just got back from painter, in assembly now.

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