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Old 06-10-2012, 01:37 AM   #1 (permalink)
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Rear suspension 3500

So my 96 3500 sags a bit in the rear when the air bags are deflated.... Somebody told me that stock the truck had blocks in the rear between axle and leafs... Is this true? My truck doesn't have any... Just need to know so I can figure out if I need new blocks or new springs. Thnx
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Old 06-10-2012, 03:05 PM   #2 (permalink)
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/bump? :/ Stock has blocks or no blocks?
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Old 06-10-2012, 03:36 PM   #3 (permalink)
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Also it only has three leafs in the rear.... Doesn't look right...seems like there should be more....
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Old 06-10-2012, 04:40 PM   #4 (permalink)
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Yeah, that does not sound right. Mine has six leafs, and two blocks on both sides (small and a larger one).
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Old 06-10-2012, 10:26 PM   #5 (permalink)
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Yeah, that does not sound right. Mine has six leafs, and two blocks on both sides (small and a larger one).
And your suspension is stock? Yah 3 leafs seems strange... Plus no blocks... Why would anyone do that? Haha.
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Old 06-11-2012, 07:42 AM   #6 (permalink)
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/bump? :/ Stock has blocks or no blocks?
stock has blocks one block on each side. The factory would never stack blocks together, that is just asking for trouble. Hell blocks in general are not the best way to get lift.
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Old 06-11-2012, 10:23 AM   #7 (permalink)
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Yep, the PO probably added the extra block. Small one though, got the stock block and a small one, looks like 1".
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Old 06-11-2012, 11:18 AM   #8 (permalink)
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Maybe someone did not like getting kicked in the butt every time they hit a bump so they removed some leaves from the springs. I had one person recommend removing a leaf spring or 2 so the truck would ride softer when empty. Then add air bags to get the loaded carrying capacity back. Could this be what was done to your truck?

Maybe they wanted to lower the truck so it would sit closer to level and removed the blocks.

Maybe they installed a lifted set of springs like the ones below and that explains it.
1-1.5" 94-02 Dodge Ram 2500/3500 Rear Leaf Springs | eBay

"Product Specs:
Vehicle: 94-01 Dodge Ram 2500HD/3500
Drivetrain 4x4 w/V10/C w/3" wide rear springs.
Addl Info. 2 Stage Springs
Notes Note: The factory block is to be removed to obtain stated lift."

EDIT: Could the air bags be trying to give a cheap lift for the truck? Once you put air in a bag it will put force against the frame. That should lift the frame some. Air shocks were long used to make a car sit higher than the factory intended it to.
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Old 06-11-2012, 11:45 AM   #9 (permalink)
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Here is my stock 2500 setup before I went with a full leaf pack from National Springs.

As you can see, the factory block has the bump stop cast into it and there is a 1" block that is between the main leafs and the secondary leafs (I think this was part of the tow or camper package). The main pack has three main leafs and the short overload leaf. The secondary pack is just two leafs and there are bracket on the frame that this hit and ride on when you have a heavy load in the back.

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Old 06-12-2012, 04:23 PM   #10 (permalink)
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Originally Posted by cummins_mike View Post
Here is my stock 2500 setup before I went with a full leaf pack from National Springs.

As you can see, the factory block has the bump stop cast into it and there is a 1" block that is between the main leafs and the secondary leafs (I think this was part of the tow or camper package). The main pack has three main leafs and the short overload leaf. The secondary pack is just two leafs and there are bracket on the frame that this hit and ride on when you have a heavy load in the back.

Thanks for the pic bud. Clears it up slot for me. My leafs look the same except there are no helper springs like you got and no blocks. Thr bags were added for towing purposes and the truck is not lifted. I know the previous owner hauled alot of big 15k+lbs boats with it. I'm just want to figure out what I need to get cause riding with the bags pumped up with no load is so rough its not even funny. And it looks like a squatting dog taking a dump when the bags are deflated. It's strange cause I knew the previous owner well I don't understand why he would take the springs out cause he used the truck to haul. Not for a nice comfy ride lol. Wish I could ask him but he is dead. So also your truck is 2500 rear suspension the same on the 3500 just bigger axle? Thanks again guys. And the air bags are def a aftermarket thing? Didn't come stock?
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Old 06-12-2012, 04:26 PM   #11 (permalink)
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Also am I supposed to have a torsion bar in the rear?
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Old 06-12-2012, 04:30 PM   #12 (permalink)
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Actually I think you mean sway bar. I think the sway bar only came on the towing package setup, which got you the upper set of helper springs. I think the 2500 and 3500 setups were the same, just a beefier rear axle. Spring rates might have been stiffer but I thought I recall reading some place they were both the same.

Too bad you are closer to me. I have all the parts and would make you a deal on them.

BTW, here is the National Springs full pack I had them build for me. It is custom done for the weight of my camper setup, which is on full time. It rides SOOO much better.

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