Rear shock mount rust ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dan-K · 03-30-2024, 03:14 PM

There seems to be a large area between my rear shock mount and the trailing arm that has some pretty serious rust going on . What do I need to do to fix this ? Do I need new rear shock mounts or can this be dealt with otherwise ?

**dmjlambert** · 03-31-2024, 11:18 AM

I don't have suggestions but subscribed to see what comes of this. My shock is attached on the outside of the shock mount, not inside like yours. I'm curious about that, too.

**57taskforce** · 03-31-2024, 01:27 PM

It’s hard to say how bad it really is until you take it apart and clean it all up, that will determine what needs to be done to fix it. A lot of times rust can expand like that but the real damage not be too bad on thicker steel. My suggestions is to take it apart and get a flap disk on the areas in question to cut thru the rust and see what it looks like from there.

**1970cstblazer** · 03-31-2024, 02:16 PM

**HO455** · 03-31-2024, 05:56 PM

As previously stated by 57taskforce only disassembling it will tell the truth.

I will add that in my experience you will need new U-bolts to reassemble it. The hassle of fighting to remove the nuts on those and the likelihood of them being compromised by the corrosion isn't worth the work. I would just cut them with a cut off disk and be done.

Just my opinion and along with a ten spot they'll get you a steaming hot cup of Joe just about anywhere.

**Sheepdip** · 04-01-2024, 10:23 AM

Here's one option:
https://67-72chevytrucks.com/vboard/...d.php?t=850227

03-30-2024, 03:14 PM	#1
Dan-K Registered User Join Date: Aug 2009 Location: Ft.Collins, Co. Posts: 104	Rear shock mount rust ? There seems to be a large area between my rear shock mount and the trailing arm that has some pretty serious rust going on . What do I need to do to fix this ? Do I need new rear shock mounts or can this be dealt with otherwise ? Attached Images

03-31-2024, 11:18 AM	#2
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,894	Re: Rear shock mount rust ? I don't have suggestions but subscribed to see what comes of this. My shock is attached on the outside of the shock mount, not inside like yours. I'm curious about that, too.

03-31-2024, 01:27 PM	#3
57taskforce All about them K’s Join Date: Jun 2014 Location: Land of Entrapment Posts: 6,512	Re: Rear shock mount rust ? It’s hard to say how bad it really is until you take it apart and clean it all up, that will determine what needs to be done to fix it. A lot of times rust can expand like that but the real damage not be too bad on thicker steel. My suggestions is to take it apart and get a flap disk on the areas in question to cut thru the rust and see what it looks like from there. __________________ Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 35x12.5x20’s

03-31-2024, 02:16 PM	#4
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,895	Re: Rear shock mount rust ? __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels

03-31-2024, 05:56 PM	#5
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,413	Re: Rear shock mount rust ? As previously stated by 57taskforce only disassembling it will tell the truth. I will add that in my experience you will need new U-bolts to reassemble it. The hassle of fighting to remove the nuts on those and the likelihood of them being compromised by the corrosion isn't worth the work. I would just cut them with a cut off disk and be done. Just my opinion and along with a ten spot they'll get you a steaming hot cup of Joe just about anywhere. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

04-01-2024, 10:23 AM	#6
Sheepdip Senior Member Join Date: Nov 2018 Location: Waterford California Posts: 2,641	Re: Rear shock mount rust ? Here's one option: https://67-72chevytrucks.com/vboard/...d.php?t=850227



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.