63" Chevy rears on MJ?

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IdahoEagle

NAXJA Forum User

Location

Boise Idaho

• May 11, 2010

• #1

Just as the title reads... Has anyone on here done this swap? If so, I'd like to see pictures of what you did... I'm getting ready to do this and I'd like to see your ideas. I currently have 85 1/2 ton Suburban rears on my truck with 1" lift shackles and it boils down to about 4" of lift. I'm looking for just slightly more lift while doing a spring over. The 63" springs are flatter than what I have now, so I think it will equal out to around 2-3" of lift more than what I have...

 

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IdahoEagle

NAXJA Forum User

Location

Boise Idaho

• May 13, 2010

• #2

Hasn't anyone done this swap on here yet?

 

Goatman

NAXJA Forum User

NAXJA Member

Location

Bakersfield, CA

• May 13, 2010

• #3

I put 1/2 ton Chevy leaves on the rear of my XJ, but I used an MJ main leaf instead of the longer Chevy main leaf. Won't help you with what you're doing.

 

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IdahoEagle

NAXJA Forum User

Location

Boise Idaho

• May 20, 2010

• #4

The rears on my MJ now are 56" Chevys. They were a bolt on and only 1" shorter on the shackle end. There was no wheelbase change but cargo capacity was seriously improved over stock.

 

Last edited: May 20, 2010

Goatman

NAXJA Forum User

NAXJA Member

Location

Bakersfield, CA

• May 20, 2010

• #5

Yup, that's what you want, a shorter spring with a worse shackle angle.

Using the slightly longer MJ main leaf would have been better, same spring rate and better shackle angle. If you want the 63" long springs, then just make a new front spring hanger.......it's not rocket science.

 

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IdahoEagle

NAXJA Forum User

Location

Boise Idaho

• May 22, 2010

• #6

I have an MJ, not an XJ... I actually have a good shackle angle... Just slightly to the rear where it should be...

 

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dakineJ

NAXJA Forum User

Location

central OR.

• May 22, 2010

• #7

I've wondered about rearching the Chevy 63's for use on an MJ, hmm...

 

89eliminator

NAXJA Forum User

Location

Delphi, IN

• May 22, 2010

• #8

why do you want to do this?

 

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IdahoEagle

NAXJA Forum User

Location

Boise Idaho

• May 24, 2010

• #9

Who..? Me? Because they are noticeably longer, still can carry the weight that I need to on a pretty regular basis (substantially more than the stock MJs), yet would improve flexibility over what I'm currently running (which is not much less flex than what I had with the MJ rears...

 

89eliminator

NAXJA Forum User

Location

Delphi, IN

• May 24, 2010

• #10

just wondering. i have been more the happy with the performance of my stock leafs but i have no room in the bed for much of anything. most "work" it sees is pulling my ATV on a utility trailer.

 

crazyjim

NAXJA Forum User

Location

SoCal

• May 24, 2010

• #11

I've been heavily leaning towards doing this with a set of Deaver spring under 62's or 63's. My MJ bucks like a sonofabitch over the rough stuff at speed, if I get it done before you I'll let you know.