D100/150 spring swap

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84D100

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My rear leaf springs are de arched and so weak I can twist my rearend up just buy having a ratchet on the pinion nut. Seeing as I am lowering the rear of it and do plan on still using the truck I would like to put 250 springs under it if possible. Would the 3/4 ton springs be a bolt in replacement or would I have to change stuff? I could just get a better set of half ton springs and run helpers also.
 

crazzywolfie

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sounds like air bags is what you want. last time i priced out new leaf springs it was about $500/set. you can get a air bag kit for a bit under $300. it should lift your rear end when you have weight in the box but also allow you to lower it when not hauling weight. i know have been thinking about removing a leaf from my truck and installing air bags. looks extremely simple
 
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84D100

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I have a set of 3/4 ton springs already is why I asked if they would fit lol.
 

crazzywolfie

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ok. should work but i think the 3/4 tons springs might do the opposite of what you want to do.
 
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84D100

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Why do you say that? I'm not just swapping springs and hoping to lowervit. I am doing an axle flip and adding traction bars at the same time.

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crazzywolfie

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3/4 ton springs will lift the back just because there is more springs. personally i think if you do an axle flip on a truck it becomes useless as a truck. i would definitely not trust all 2000+ lbs to some u bolts. there is a reason pretty much every truck out there has the axle under the leafs and not on top.
 
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84D100

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My Durango and the other 150+ thousand Durango's are all that way. Never seen one break a u bolt. My truck isn't going to see a lot of weight anyway.

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crazzywolfie

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durango's are mainly passenger vehicles where you are pretty limited to what you can put in them where you can put just about anything in the back of a truck and they are easily overloaded. if you don't plan on hauling too much weight in the back it will most likely be fine
 
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84D100

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There won't be hardly any weight in the back I just don't want it to squat if I put a trailer with a 5-800 pound tinge weight on the back of it.

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AshC

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I have a 84 D150 and put 3/4 ton springs on the back of it. The back end sits up higher than the front now but it does work.
 
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84D100

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My springs were fine I wasn't having spring wrap issues I found out. I had broke my rear end housing where the spring mounts were mounted
 

DodgeAddict

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durango's are mainly passenger vehicles where you are pretty limited to what you can put in them where you can put just about anything in the back of a truck and they are easily overloaded. if you don't plan on hauling too much weight in the back it will most likely be fine

Why do you say this? trucks built in the beginning were axle on top of springs they changed this to get more ground clearance not because the u bolts were weak
 
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