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02-14-2019, 12:32 PM | #1 |
Registered User
Join Date: Jun 2002
Location: Fort Worth, TX
Posts: 920
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Control arm u bolts size
Redoing my front-end and need to replace those I bolts. Does anyone know what size they are? Was hoping to find them locally. Thanks
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02-14-2019, 01:36 PM | #2 |
Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,320
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Re: Control arm u bolts size
If C10 they were originally 7/16" or 1/2", though it's good idea to replace them with 9/16", which you'll find on a C20. 9/16" may be a pinch too large to fit through the hole, but a little filing will do it.
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Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
02-14-2019, 02:28 PM | #3 |
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Join Date: Jun 2002
Location: Fort Worth, TX
Posts: 920
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Re: Control arm u bolts size
Thanks a lot!
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02-14-2019, 02:29 PM | #4 |
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Join Date: Jan 2007
Location: Puyallup, WA
Posts: 1,662
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Re: Control arm u bolts size
The 7/16" & 1/2" u-bolts had a problem with snapping when in reverse with the wheel cranked all the way in either direction. I've had it happen myself. The 9/16" u-bolts are an excellent safety upgrade. You may need to use a 9/16" drill bit to open the stock holes a bit.
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72 C10 lwb fleetside -stock 350/350 combo |
02-14-2019, 02:59 PM | #5 |
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Re: Control arm u bolts size
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02-14-2019, 03:42 PM | #6 |
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Join Date: Oct 2015
Location: San Tan Valley, Arizona
Posts: 313
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Re: Control arm u bolts size
I got the 9/16 ones from NAPA. They had to order them but it only took a couple days. They i think the set of 4 cost me what 2 cost from LMC.
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02-14-2019, 03:56 PM | #7 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,971
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Re: Control arm u bolts size
Got the 9/16" Dorman U-bolt kit from Summit Racing. One thing they didn't come with was washers, so I had to source those locally.
Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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02-15-2019, 02:01 AM | #8 |
Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,320
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Re: Control arm u bolts size
I found super nice washers for these, they're more narrow than most you'll find, so they won't get bent up on the cross member. Only downside is they're real expensive, they're very proud of their washers They're finished like ARP bolts. Oh yeah, be sure to use prevailing torque nuts.
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Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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