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#836121 - Sat Mar 17 2012 09:42 PM Updating shocks  
jjrockbush  Offline
Wrench Fetcher
Joined: Apr 2010
Posts: 42
Florida
I have a 1948 3/4 ton. The suspension is 100% stock. Any advise on updating the old knee shocks to more modern shocks? I have seen shock mounts, but they are for the 1/2 ton.

Can some please tell me this is a cheap and easy fix?



Who owns this car with the peace sign, mag wheels, and 4 on the floor?

Dude- 1948 Chevrolet Thriftmaser 3600

http://smg.photobucket.com/albums/v673/jjrockbush/1948%20Chevy%20Thriftmaster/


#836593 - Mon Mar 19 2012 01:26 PM Re: Updating shocks [Re: jjrockbush]  
elmer46  Offline
Shop Shark
Joined: Feb 2008
Posts: 248
san antonio, tx
This is what I did. I have a 46 1/2 ton that I converted to tube shocks from knee action. I got some lower front tube type shock mounts off an Advance design series (47-50something.) that was in a junk yard. The mount was in a straight up and down orientation, I've seen some that have an angle towards the front of the truck I guess the choice is up to you. Anyway, got the lower shock mounts mounted to the leaf springs and measured the travel. Then I got on the monroe web site and found a shock with that travel with posts mounts on both ends ( choices are post or fork mount etc). These turned out to be off a 53 vette.

I made some upper mounts off of flat steel, bent them into a 90, welded some webbing for added strengh, attached to the frame and been running that way for about 5000 miles.

This is just a suggestion that worked for me I can't say it will work for you.


#836657 - Mon Mar 19 2012 06:26 PM Re: Updating shocks [Re: elmer46]  
Whitedog  Offline
Shop Shark
Joined: Mar 2008
Posts: 1,616
IL
The 47-55.1 AD trucks had basically the same front suspension. I wouldn't hesitate putting the 1/2 ton shock and mounts on a 3/4 ton. I looked in my LMC catalog and they had the same bracket and shock listed for the 1/2 and 3/4 ton for 50-55. Not to mention they used the same leaf spring setup from 47-55.1. Seems to me, it's a natural fit.


1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket

#836712 - Mon Mar 19 2012 11:50 PM Re: Updating shocks [Re: Whitedog]  
jjrockbush  Offline
Wrench Fetcher
Joined: Apr 2010
Posts: 42
Florida
Originally Posted By Whitedog
The 47-55.1 AD trucks had basically the same front suspension. I wouldn't hesitate putting the 1/2 ton shock and mounts on a 3/4 ton. I looked in my LMC catalog and they had the same bracket and shock listed for the 1/2 and 3/4 ton for 50-55. Not to mention they used the same leaf spring setup from 47-55.1. Seems to me, it's a natural fit.


Thanks!.....(runs off to the LMC webpage....)


Who owns this car with the peace sign, mag wheels, and 4 on the floor?

Dude- 1948 Chevrolet Thriftmaser 3600

http://smg.photobucket.com/albums/v673/jjrockbush/1948%20Chevy%20Thriftmaster/

#849329 - Mon May 07 2012 02:04 AM Re: Updating shocks [Re: jjrockbush]  
jjrockbush  Offline
Wrench Fetcher
Joined: Apr 2010
Posts: 42
Florida
After much research, I cannot figure a way to get tube shocks on the rear of the 3600 without much fabrication. The front is indeed the same as a 1/2 ton. The rear however, is much different. The leaf springs are mounted out board of the frame. In a 1/2 ton, the leaf springs are directly under the frame.

I am open to suggestions.


Who owns this car with the peace sign, mag wheels, and 4 on the floor?

Dude- 1948 Chevrolet Thriftmaser 3600

http://smg.photobucket.com/albums/v673/jjrockbush/1948%20Chevy%20Thriftmaster/

#855038 - Tue May 29 2012 10:51 PM Re: Updating shocks [Re: jjrockbush]  
hoozat  Offline
Shop Shark
Joined: Jun 2011
Posts: 456
Pennsylvania
chevy s-10 has the lower shock mounts, that will work on the back and what I did was bolted a piece of angle iron between the frame rails and made my own upper shock mounts u can see in my pictures
http://s629.photobucket.com/albums/uu14/kurtdh519/

all i did with the bottoms mounts was drill the u bolt holes closer so I could use my original springs



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