by docmcg Thu Oct 16, 2014 1:12 pmI have reason to believe there was prior rear end work done on this truck. When I first got it the rear sat quite high. I think someone reversed the shackles. Can someone tell me if the spring in the back is supposed to go above the the perch or below it. What I mean is, does the shackle hang down or point up?
+2
dix
docmcg
6 posters
Rear spring shackles
docmcg- Number of posts : 206
Location : Visalia, CA
Registration date : 2014-09-08
dix- Moderator 1st Class
- Number of posts : 8769
Location : pittsburgh pa
Age : 67
Registration date : 2008-05-29
the spring should be above the perch
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still vannin since 1974
Scotts_A100- Number of posts : 160
Location : Metro Detroit
Registration date : 2010-06-02
The following shows the spring hanger position on the rear axle as I was working on the brakes. Hope that this helps. Scott...
(PS you may have to double click on the picture to see the whole picture.)
(PS you may have to double click on the picture to see the whole picture.)
dix- Moderator 1st Class
- Number of posts : 8769
Location : pittsburgh pa
Age : 67
Registration date : 2008-05-29
great pic scott,
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still vannin since 1974
docmcg- Number of posts : 206
Location : Visalia, CA
Registration date : 2014-09-08
Thanks Scott, except I can't see the rear shackles in your picture. I changed the position of the shackles so they point up above the spring. Truck now sits lower (obviously) and the pinion angle looks less severe than before.
busman78- Number of posts : 483
Location : Oklahoma City, OK
Registration date : 2012-07-11
Here is another shot of the rear shackle
docmcg- Number of posts : 206
Location : Visalia, CA
Registration date : 2014-09-08
Thanks, Busman. That's exactly what I was looking for. As I stated earlier, my shackles originally mounted pointing down. I didn't think that was right, especially because of the pinion angle. I mounted mine like yours, and now all is right. Thanks again, I really appreciate your time. Steve
slowflapper- Number of posts : 957
Location : GA
Age : 55
Registration date : 2010-07-29
docmcg wrote:Thanks Scott, except I can't see the rear shackles in your picture. I changed the position of the shackles so they point up above the spring. Truck now sits lower (obviously) and the pinion angle looks less severe than before.
I'm surprised you haven't been blowing out the rear u joint. I had my spring bushing replaced once and the shop put the shackles in upside down by accident, rear ujoint didn't last 100 miles before it went.
I think permissible pinion angle is 5 degrees or less depending on rpm.
more details on that
vanny- Moderator
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Location : Ashburnham, MA
Age : 65
Registration date : 2012-09-22
Busman, I never thought I'd say this to another Guy but you have a nice clean rear end! Is that rear disc brakes as well?
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busman78- Number of posts : 483
Location : Oklahoma City, OK
Registration date : 2012-07-11
Why thank you, it got a little scuffed up during the install. Rear was media blasted and painted with Eastwood Chassis paint. Yes indeed it does have disk brakes, also notice that is a Ford 9", the 8-3/4 Mopar can be seen in the background.
vanny- Moderator
- Number of posts : 14778
Location : Ashburnham, MA
Age : 65
Registration date : 2012-09-22
Nice, I bet it stops on a dime now! Looks Great! 
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“The future will soon be a thing of the past."
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