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| | | | Joined: Oct 2015 Posts: 406 'Bolter | | 'Bolter Joined: Oct 2015 Posts: 406 | I'm in the prosses of replacing my rear shocks on my 62 one ton . my current shocks are 21 in. full extended which is roughly the distance between mounting bolts
when suspension is hung with shocks removed . So far I've been only able to find shocks to fit that are 19 in. long .
Would this damage the shocks if the suspension hangs on the shocks when jacked up .
The collapsed length is fine .
John
good planning is no substitute for dumb luck
| | | | | Joined: May 2015 Posts: 11,017 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,017 | When I put the rear shocks on my bare chassis, I needed to compress the suspension a bit to get them on. They were the recommended stock length shocks. I don't think it will hurt anything if you let the axle hang on the shocks. You normally won't see full extension when driving unless you're doing a Dukes of Hazard jump. 
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together. | | | | | Joined: Feb 2000 Posts: 5,198 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,198 | | | | | | Joined: Oct 2015 Posts: 406 'Bolter | | 'Bolter Joined: Oct 2015 Posts: 406 | So far I'm not having any problems finding the right length , the top bolt eye is 3/4 in. and the bottom is 1 in. and so far I've only found one shock a Monroe part no
66660 with the right eye sizes but 2 in. to short . The search goes on .
John
good planning is no substitute for dumb luck
| | | | | Joined: Jan 2022 Posts: 196 'Bolter | | 'Bolter Joined: Jan 2022 Posts: 196 | Do the old shocks have a number on them? Are they the original shocks?
The part number for a 1962 C30 and GMC 2500 and 3000 is 5549599. It Interchanges with Monroe 66878 . Summit racing list 66878 for a 1962 C50 or GMC 3500. It has an extended length of 23.906 in. They also list 66902 for a 1962 GMC 3000, the 2500 1Ton used the same shock, and it has an extended length of 23.875 in. The 66902 has L1 L1 5/8 “ ends. The 66878 has LS54 LS54 ¾ ends. EBay has a listing for a 60-62 C20 ¾ Ton (5552230) shock that has an extended length of 25-3/8". The 66660 shock is only 19.21” extended length. The Gabriel 82035 are the front shocks.
I think you need a shock longer than 21”.
Last edited by jimgmc; 03/05/2022 10:26 PM.
| | | | | Joined: Oct 2015 Posts: 406 'Bolter | | 'Bolter Joined: Oct 2015 Posts: 406 | Well I'm embarrassed to say I found the problem with the shocks, it was ME !!!
When I removed them the top loop came off with the steel bushing still in the shock , but the bottom loop the bushing remined on the bolt so therefor made it
look bigger . It took a fair bit of heat and a chisel and hammer to get the bushing off but now an appropriate shock will be easier to find with both ends being 3/4 in.
Ah to live and learn .
John
good planning is no substitute for dumb luck
| | | | | Joined: Feb 2004 Posts: 29,756 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,756 | The "compressed" measurement is probably more important. Be sure the shock can collapse far enough to allow the springs to compress fully without bottoming the shocks out. I've been known to loop a strong piece of chain over the frame and under a heavy duty floor jack to measure suspension travel when I'm setting up race car suspension.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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| | | | | Joined: Oct 2015 Posts: 406 'Bolter | | 'Bolter Joined: Oct 2015 Posts: 406 |
good planning is no substitute for dumb luck
| | | | | Joined: Oct 2015 Posts: 406 'Bolter | | 'Bolter Joined: Oct 2015 Posts: 406 | Thanks , monroe 66878 it will be .
John
good planning is no substitute for dumb luck
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