85 Monte Carlo SS rear bumper shock

leona

Not-quite-so-new-guy
Jan 11, 2011
24
3
I just got my 85 Monte Carlo SS hit on the drivers side rear bumper. The rear bumper shock absorber has been pushed in. I was wondering if I can replace this shock absorber with an 81 Cutlass one. I'm not sure if they are the same but I do have access to it.
 

CopperNick

Royal Smart Person
Supporting Member
Feb 20, 2018
2,223
113
Canada
4 bolts on the inner bumper channel and 3 at the flange connection between the shock and the frame horn, and possibly one more that is attached to an Ell bracket bolted to the end of the shock that fits inside the rear frame horn and bolted to the frame threough the bottom sill using another bolt. They are all Metric, seem to recall them being 11 or 12 mm with either a 14 or 15 mm hex head on them, and the use of 6 point sockets and wrenches along with a power or Johnson bar is highly recommended when trying to persuade them to come apart. Avoid air until you have the nut backed off; applying air will almost guarantee that you chew a head or two off. For the actual swap you need to measure the overall or unsquashed length of the shock, maybe measure the pasenger side, and compare that to the Cutlass item you have. Then make sure the number of tabs or ears that the replacement shock has match the old one about to come out at both ends.

Be aware that the actual bumper channel is aluminum. It is entirely likely that you will encounter corroision or galvanic deterioration due to interaction between the metal shock and the aluminum mounting holes. You may also discover that there are shims between the channel and the shock mounting plate to set and adjust the fit of the bumper and how it sits in relation to the body. Don't breathe that white dust if you encounter it, you are just breathing rust in a non-metalllic form.



Nick
 
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69hurstolds

Geezer
Supporting Member
Jan 2, 2006
6,815
113
According to GMPSO, the answer would be no. They have different part numbers. I have no idea what's different. Most likely length, but that's not for sure.
 
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leona

Not-quite-so-new-guy
Thread starter
Jan 11, 2011
24
3

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64nailhead

Goat Herder
Supporting Member
Dec 1, 2014
4,967
113
Upstate NY
Not the same for sure.
 

leona

Not-quite-so-new-guy
Thread starter
Jan 11, 2011
24
3
This part is in ebay right now.
 

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69hurstolds

Geezer
Supporting Member
Jan 2, 2006
6,815
113
Is the part number 22017527?
According to the parts information 82-88 G37 Monte Carlo uses the 22017527 in the rear. No indication whether SS makes a difference or not. The Cutlass one is not the same part number. Absolutely no idea if it even comes close.

It seems that front absorbers for G37 are different depending on Z65 or not. So it appears the SS front bumper shocks are different from non-SS.
 
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leona

Not-quite-so-new-guy
Thread starter
Jan 11, 2011
24
3
According to the parts information 82-88 G37 Monte Carlo uses the 22017527 in the rear. No indication whether SS makes a difference or not. The Cutlass one is not the same part number. Absolutely no idea if it even comes close.

It seems that front absorbers for G37 are different depending on Z65 or not. So it appears the SS front bumper shocks are different from non-SS.
I went a head and purchased the one on eBay. I need my car back to normal.
 
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565bbchevy

Geezer
Aug 8, 2011
9,196
113
Michigan
My 83' Monte CL has its original front and rear bumper shocks and I had no issues adding the SS front end and a 87' SS rear bumper assembly
 

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