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05-04-2019, 03:00 AM | #1 |
Registered User
Join Date: Jul 2014
Location: Washington
Posts: 535
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Rear U-Bolt Torque
Im Getting So Many Conflicting Answers.. All The Way From 125-250 foot Lbs.
Just Wondering The Toque Of The U bolt to axle housing n Trailing Arm To Frame? Do they Have To Be Under Load? Thanks Posted via Mobile Device |
05-04-2019, 06:16 AM | #2 |
Registered User
Join Date: Aug 2012
Location: St. Croix River Valley, WI
Posts: 795
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Re: Rear U-Bolt Torque
When I tightened mine up just a few weeks ago, the tips of the U-bolts were just a little two long for a deep well socket so I just used a 1-1/16" open-end wrench and used the trick where you hook another wrench over the first for added length, then used that length to get them tighter than heck. Guessing they are within 20lbs of 175lbs give or take. I drove the truck for about 50 miles, then rechecked them and they were all still tight, so I'm good with it.
If you tighten them evenly, you'll feel them bottom out. Mine were tight enough that I was worried about pulling the truck off the jack-stands because I was reefing so hard on the wrenches.. LOL I know this isn't the exact answer you were looking for, but I was finding the same varying torque specs as well, so "tight as heck" and rechecking them after a few miles works.
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Meet "Old Roy": http://67-72chevytrucks.com/vboard/s...d.php?t=707801 Last edited by saxart; 05-04-2019 at 06:24 AM. |
05-04-2019, 06:52 AM | #3 |
Registered User
Join Date: Apr 2019
Location: Yorkshire UK
Posts: 75
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Re: Rear U-Bolt Torque
To add to what saxart said, the rear ubolts on my truck have split pins through them too. Easy enough to add I guess and then you know they aren’t coming off I guess. But I went with tight as heck with mine too!
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05-04-2019, 07:20 AM | #4 |
Senior Member
Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Rear U-Bolt Torque
This thread should help , I have mine at 150 .
http://67-72chevytrucks.com/vboard/s...d.php?t=316066
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1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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