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Regular
Posts: 68
| Guys,
Is there a polyurethane replacement bushing I can get for the rear spring shackles on my 56 Fury? Like something for a '60's-'70's car? I can't get the rubber ones in without destroying them.
Thanks!
Tommy |
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Expert
Posts: 1506
 
Location: Colo Spgs | Hola Tommy
The later 1960's and 1970's and even the 1980's vehicles also came with the bushing units just as a 1956 Plymouths.
The units with rubber always offer a better "ride quality" than a after market polyurethane ( plastic ) unit. If you "must" have a plastic unit - go to a truck 4 X 4 altering shop.
Rodger & Gabby
Colo Spgs |
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Member
Posts: 16
| I've been on this site for 2 years and have absorbed as much information as I could. I now know about 2% of what the least experienced person on here knows. But after a lot of research, I can finally post a helpful comment. Well, it's helpful as long as it's accurate...
I've been researching this for my own car, a 1960 New Yorker, and think I have found the answer. Then, I came on here and found this thread, so here are the results of my research. Please bear in mind that I have not yet purchased these parts so I cannot verify fitment. But, according to Rock Auto and Federal Mogul/Spicer/RaybestosChassis, this should work:
Prothane 4-1001 (red) or Prothane 4-1001-BL (black)
OR
Energy Suspension 5.2101 (red) or 5.2101G (black).
(NOTE: Application is for 1970 Dodge Challenger (They would probably fit other models as well). Both kits have bushings for both the shackles and the eyebolts. I'm not sure if you need the eye bolt bushings.)
I don't have a parts interchange book, so here's how I came up with this: I went to RockAuto.com and searched under suspension for your '56 Fury. Currently, under all engine sizes, there is only one part listed for leaf spring shackle bushing: AC Delco p/n 45G15405.
I cross referenced that with raybestoschassis.com in the "interchange" field in the top left corner of the website's home page. That shows a raybestos part # of 576-3405 (or 576-3405B for the "standard" or economy version of the same part). So the AC Delco 45G15405 is the same as Raybestos Chassis 5763405. If you click that Raybestos part #, a separate window will pop up giving you full specs of the part. Notice that it states the OD is 1".
Now, go back to raybestochassis.com, and click on "catalog" at the top. Then select year/make/model for your car and select "Front Suspension - Shackles & Parts". You'll get no results for a 1956 Fury. But look under 1960 Chrysler New Yorker and again select "Front Suspension Shackles & Parts. A separate window will open with the parts made for that car. Notice that the Raybestos P/N 576-3405 is listed. This means that the 1960 New Yorker uses the same bushing as the 1956 Fury. So far, this gets you nowhere.
But now, under raybestoschassis.com, select 1970 Dodge Challenger instead of your '56 Fury or the '60 New Yorker. Again, select Front Suspension - Shackles & Parts. When the additional window opens up, compare it to the parts listed in the window for the 1960 Chrysler. They are the same except for the shackles themselves.
THEREFORE, if these websites can be trusted, the 1956 Fury, 1960 New Yorker, and 1970 Dodge Challenger all use the same leaf spring shackle bushings. When you search for polyurethane for a '70 Challenger, you have plenty of options. Just make sure you get the correct size 1" OD.
If someone here has one of those interchange books, maybe it will confirm what I have found.
I know this was long-winded, but I felt I should explain the logic since I am still an inexperienced newcomer... |
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Expert
Posts: 3575
Location: Netherlands | tlfrantz - 2014-09-23 3:51 AM
... I can't get the rubber ones in without destroying them.
Unless you're using a torch or maybe a 50-ton press or something, I can't quite see how you could destroy a few simple bushings which you all install by hand?
That said,
a polyurethane bushing (which is not plastic but just a tougher siliconbased compound) gives a more positive spring and axle placement, which tightens up the feel of the car.
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Expert 5K+
Posts: 6500
Location: Newark, Texas (Fort Worth) | Small primer in installing bushings:
http://www.polybushings.com/pages/rampsprings.html
You could use poly-graphite style also:
http://www.p-s-t.com/Products_2/Products/Polygraphite-reg-Bushings |
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Location: Naperville, IL | 1960NewYorker413 - 2015-01-17 11:15 PM
Prothane 4-1001 (red) or Prothane 4-1001-BL (black)
OR
Energy Suspension 5.2101 (red) or 5.2101G (black).
(NOTE: Application is for 1970 Dodge Challenger (They would probably fit other models as well). Both kits have bushings for both the shackles and the eyebolts. I'm not sure if you need the eye bolt bushings.)
...
THEREFORE, if these websites can be trusted, the 1956 Fury, 1960 New Yorker, and 1970 Dodge Challenger all use the same leaf spring shackle bushings. When you search for polyurethane for a '70 Challenger, you have plenty of options. Just make sure you get the correct size 1" OD.
Thanks for the tip, much appreciated! I was thinking about swapping the rubber shackle and eye bushings into polyurethane to reduce rear axle side-to-side movement on my '57 Chrysler NYer. Currently I'm getting some fender rub on the new right rear whitewall tire right on the top of the whitewall.
One thing to note, Prothane 4-1001 kit has the 1" shackle bushings and the eye bush is 2". On my car the eye bush actually needed to be 1.5". I have Eaton HD leaf springs, so I don't know if these have non-stock eye size or not. The kit that worked for me was Prothane 4-1002-BL.
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Leaf spring shackle bushings 56 Fury
