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#1 |
Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
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Torque Spec for Front Upper Shock Mount
Just double checking on the torque spec for the front upper shock mount. Chassis Service manual and Haynes manual say 140 ft/lbs, just sounds like an awful lot. Don't want to break anything. '69 C-20
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Beat it to fit, Paint it to match... ![]() Last edited by Sinister; 11-19-2009 at 10:18 PM. |
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#2 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Torque Spec for Front Upper Shock Mount
I hammer them as tight as my impact will get them, then tackweld them in place. I have had to fix a lot of the these old truck frames where the upper mount got loose and wallowed out the hole in the frame.
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#3 |
Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
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Re: Torque Spec for Front Upper Shock Mount
I'll go with 140 then, thanks.
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#4 |
Never Ending Projects
Join Date: Jul 2006
Location: San Diego, CA
Posts: 3,836
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Re: Torque Spec for Front Upper Shock Mount
Does anyone know where I can buy replacement upper mounts?
Like a dumb a$$, I took them off when I was cleaning and painting the frame. I guess Chevy stamped the end after the nut was tightened down, to "pin" it so they would not loosen up. After I got them removed (which was a PITA) the treads are completely toast. I can't reuse these so I need new ones. Let me know. Thanks!
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. 1965 C10 Panel, ![]() 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often... |
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#5 | |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Torque Spec for Front Upper Shock Mount
Quote:
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#6 |
Registered User
Join Date: Jan 2009
Location: San Antonio, Texas
Posts: 1,374
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Re: Torque Spec for Front Upper Shock Mount
I learn something new constantly! Thanks for that tidbit -- also for the advice on tack welding the nut.
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1972 C10 LWB, 350/350 Deconstruction began 5/2009, mostly completed restoration, 5/2017 |
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#7 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Torque Spec for Front Upper Shock Mount
See, the original shocks had the mount stud built into them like a big button head bolt. So, the aftermarket shock manufacturers include new mount studs and hardware for them.
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#8 |
Never Ending Projects
Join Date: Jul 2006
Location: San Diego, CA
Posts: 3,836
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Re: Torque Spec for Front Upper Shock Mount
Really, I have seen that for the rears but not for the fronts. I'll have to open the KYB boxes when I get home. LOL
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. 1965 C10 Panel, ![]() 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often... |
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#9 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Torque Spec for Front Upper Shock Mount
Here is a pic I took of an old frame awhile back. Notice the top shock mount is made into the original shock. When you replace the original shocks, you must have a new stud type of upper mount. Your KYBs will have them in the box in a plastic baggie.
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#10 | |
Never Ending Projects
Join Date: Jul 2006
Location: San Diego, CA
Posts: 3,836
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Re: Torque Spec for Front Upper Shock Mount
Quote:
BTW, you're completely correct on the KYB's, there are new mounts in the box... but I bet you already knew that part. ![]() Thanks again, learned something new. ![]()
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. 1965 C10 Panel, ![]() 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often... |
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#11 |
Registered User
Join Date: May 2019
Location: Lakewood
Posts: 81
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Re: Torque Spec for Front Upper Shock Mount
Thanks for posting this photo Tx FireFighter! When I replaced my shocks last week I was curious why the heck the upper mount was done with that odd mushroom bolt but know I know my shocks were original to my 49 year old truck. Surprisingly, they were neither leaking nor completely blown out.
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#12 |
vw guy & now c-10 guy
![]() Join Date: Sep 2008
Location: Louisville,KY
Posts: 483
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Re: Torque Spec for Front Upper Shock Mount
yeah, I just installed drop shocks on mine while redoing the front end, and was happy to find new studs in the boxes with the shocks...
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#13 |
Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
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Re: Torque Spec for Front Upper Shock Mount
O.K. Just need a little clarification. New shocks cam with new studs. Is that 140 ft/lbs the torque for the stud to the frame or the nut that holds the shock on the stud?
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#14 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Re: Torque Spec for Front Upper Shock Mount
Stud to frame.
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#15 |
Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
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Re: Torque Spec for Front Upper Shock Mount
Thanks again.
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#16 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
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Re: Torque Spec for Front Upper Shock Mount
I've put a few sets of KYBs on over the years.
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#17 |
Between Trucks...
Join Date: Mar 2002
Location: Los Angeles, CA.
Posts: 3,830
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Re: Torque Spec for Front Upper Shock Mount
Thanks to everybody's help, I got it done. Thanks Tx Firefighter. A little tight clearance wise getting the front studs in. I thought I might have to drop my headers for a bit. Rear shocks were a little bit of a PITA. Had to compress them by hand while trying to get the bolt through. Rear shocks didn't have the straps on em. The Gasajust's aren't to stiff for me, big improvement over what was on there
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Beat it to fit, Paint it to match... ![]() Last edited by Sinister; 11-21-2009 at 05:31 PM. |
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#18 |
Registered User
Join Date: Nov 2012
Location: DFW, TX
Posts: 298
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Re: Torque Spec for Front Upper Shock Mount
Guys
So if the 140 is the spec for shock stud to frame, what is the spec for the shock to stud nut? thanks! |
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#19 |
Senior Member
![]() Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,683
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Re: Torque Spec for Front Upper Shock Mount
Bringing this back up to the top to add more value.
I decided to go with 140 for stud to frame, and 75 for the smaller nut that holds the shock absorber on. I have a question for you folks. Do you recognize this nut that came with the new stud in the package with new Monroe shock? There was no lock washer in the package, and I notice this nut turns freely and goes on with no problem until the last few threads reach the beginning of the stud threads. From that point on, it takes a lot of torque to turn the nut and the nut gets warm when continuing to tighten. Is this a special locking type nut? |
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#20 |
Senior Member
![]() Join Date: Jun 2009
Location: Portland - OR
Posts: 243
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Re: Torque Spec for Front Upper Shock Mount
I believe they are called distorted thread locknuts. They make them different ways. Commonly the end is oval/elliptical so they don’t loosen
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#21 |
Never Ending Projects
Join Date: Jul 2006
Location: San Diego, CA
Posts: 3,836
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Re: Torque Spec for Front Upper Shock Mount
Those are called "Top Lock" nuts. A mechanical locking nut versus a lock nut that used the plastic ring in the top of the nut. Top locks are not effected by heat but are only supposed to be used once.
__________________
. 1965 C10 Panel, ![]() 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often... |
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