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Cherokee rear end swaps...leaf springs


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So, many have done this to get a modern rear and brakes under their trucks. Mine is a 46 WD15. Right now it sits way up in the rear, and for a 3/4 ton I can understand that. I'm never going to load it like that again.

 

I wanted to ask what leaf springs people are using when they do the swap. Mine are 75 years old, they need to be replaced anyway. I don't want to just buy another set of stock ones, then take out leafs to get them down. Any suggestions?

 

Thanks.

Edited by lostviking
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  • 2 weeks later...

I think most used the original springs, maybe dismantled and cleaned them up, maybe greased them or teflon strips, reassembled, maybe removing a few leaves.  I doubt many bought new springs, the Mopar owners I know for the most part being a frugal bunch  If yours is a 3/4, maybe  purchase springs for a 1/2 ton or run the truck over a scale and call the spring manufacturer and discuss it with them.  Since ride comfort is subjective, you may find it a bit trial and error.

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On 2/21/2021 at 2:44 PM, lostviking said:

So, many have done this to get a modern rear and brakes under their trucks. Mine is a 46 WD15. Right now it sits way up in the rear, and for a 3/4 ton I can understand that. I'm never going to load it like that again.

 

I wanted to ask what leaf springs people are using when they do the swap. Mine are 75 years old, they need to be replaced anyway. I don't want to just buy another set of stock ones, then take out leafs to get them down. Any suggestions?

 

Thanks.

Is this a work truck, daily driver light loads, or a parade truck.......it all makes a difference. Edit, I see work truck is out, my bad. You could remove some leafs and relocate the pack under the axle for lowered ride height. Seeings you are not going to be loading heavy.

Edited by Frank Elder
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Fwiw the 3/4 ton trucks have a very good ride just as they were sprung at the factory. Everyone that rides in mine has commented how nice it is. And I do carry heavy loads in mine from time to time. Absolutely no need to change anything.

Jeff

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  • 2 months later...

49 B1  Here   Also  unhappy with Rear  springs especially the rear shackle.     Just bought  a Ranger  rear spring setup.  Thinking Ranger will be closest  truck  to the  Pilothouse in this size range.

 Springs on Pilot House  are 26 in front  and 26 in to rear  so Ranger is  25 7/8 to front  31 in to rear.  Shackles Same length. Lots of real estate out back.

 

Major difference is spring depth on Ranger is 6 1/2  where  Pilot house is 7 1/2  So should set lower. 

 

Rear perch will fit nicely out back   Metal is pretty "holey"  so I will add plate to inside frame to stiffen this area.

 

Front perch is the  problem.    Need to add additional material to lower part of bracket and corresponding holes  as the upper portion of the Ranger perch needs to be cutoff.  So thinking  3/16 plate  approx. 7 1/2 x 6 in  and remove a "vee" section so the bracket fits close enough to weld and the modified bracket will fit flat on the side of the frame.

 

Grind out and remove existing  rivets on cross member.    Add Grade 8 bolts with locknuts and Loctite.   Remove  any additional interference to  new modified front ( or) Rear perches 

 

I'm hoping this  setup will give me   options for  the 2.5  std. springs,  I wouldn't have using the 1 3/4 in  original.  and a much stronger suspension to mount an 8.8 rear axle. 

 

Just started this project this week  so need to purchase some steel.  Just started the complete truck so it will be awhile before  it becomes road worthy.

 

Wish me luck.

 

 

 

 

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