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CJ leaf spring selection

Discussion in 'Suspension' started by Duff, Mar 28, 2020.

  1. Mar 28, 2020 at 7:34 PM
    #1
    Duff

    Duff [OP] Well-Known Member

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    It's time to replace the springs on my 85 CJ7, the DS front has 5 leaves, PS front has 4, rear have 6 leaves each and are sagging, so I'm ordering new springs, 1" lift shackles, U bolts and plates. I'm getting the springs from General Spring https://www.generalspringkc.com/ Their spring capacities are: Front 640lb, 890lb and 920, Rears 780lb, 785lb, 840lb, 900lb and 985lb. I may add a winch in the future, so I picked the 890lb. for the fronts, but I need advice on the rears. I'll probably pull a light trailer once in a great while, so I'll need enough spring for that, but don't want to bounce off the road either. Any suggestions?

    Back.jpg
     
  2. Mar 30, 2020 at 5:56 PM
    #2
    Jim Beam

    Jim Beam Well-Known Member

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    Vehicle:
    1986 CJ7
    Fuel Injection, Dana 44s, T18, 4.10s w/lockers
    I have been satisfied with BDS springs and Rancho RS9000 adjustable shocks set to the softest settings along with a 9000 lb. Warn winch. Along with that I run 28 p.s.i. in the tires. There are custom springs manufacturers like these guys:https://deaverspring.com/, who have a very good reputation.
     
    aggrex likes this.
  3. Apr 17, 2020 at 4:23 AM
    #3
    Duff

    Duff [OP] Well-Known Member

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    Decided to put 32 x 11.00's on , so I ended up ordering a Made in USA, Ruff Country 2.5 lift # 4271k. I found a smokin' deal at SDtrucksprings.com. $638.00 complete kit with hydro shocks & boots and FREE UPS shipping. I'll post pictures next month when the new wheels and tires arrive.
     
  4. Apr 17, 2020 at 5:11 AM
    #4
    daddyusmaximus

    daddyusmaximus Well-Known Member

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    '79 CJ5
    360, D44 front, Chrysler 8.25 rear, 4 wheel discs, rear Detroit locker
    Unless you're really concerned with load capacity, and I'm talking on a regular daily basis, I'd go soft, even in the front. That's me, I want ride quality. I'm doing a frame up rebuild at the moment, and I went with YJ springs.
     
  5. Apr 17, 2020 at 5:52 AM
    #5
    Duff

    Duff [OP] Well-Known Member

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    Yes, I bought the kit with the EZ Ride springs.
     
  6. Jun 26, 2020 at 4:00 PM
    #6
    Eyy-sp12

    Eyy-sp12 Member

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    Charles
    Vehicle:
    1977 CJ5 with 304 and T-176
    T-176 Transmission with Dana 300
    Hello my name is Shane . I have a 1977 Cj5 with a 304 and going to put a t176 in it . This is my first build . The suspension seems simple enough but I want to raise it . Have you allready finished your set up with the yj springs?
     
  7. Jun 26, 2020 at 4:32 PM
    #7
    daddyusmaximus

    daddyusmaximus Well-Known Member

    Joined:
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    Vehicle:
    '79 CJ5
    360, D44 front, Chrysler 8.25 rear, 4 wheel discs, rear Detroit locker
    My springs are on, but I can't tell you how they ride. The rebuild is going very slow, and right now I'm doing the front axle... rear to follow... and so on. It may not be running under it's own power for another two years or so. I'm confident they'll ride better than CJ springs.
     
  8. Jun 27, 2020 at 7:08 AM
    #8
    Eyy-sp12

    Eyy-sp12 Member

    Joined:
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    Charles
    Vehicle:
    1977 CJ5 with 304 and T-176
    T-176 Transmission with Dana 300
    Have you ever done a soa set up ? I haven't even did regular set up lol. This is my first rebuild. I'm thinking going that way . Have also thought about reverse shackles on front and using yj springs . What do you think Bob have you ever done a similar set up ?
     
  9. Jul 8, 2020 at 8:11 PM
    #9
    Eyy-sp12

    Eyy-sp12 Member

    Joined:
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    Messages:
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    Gender:
    Male
    First Name:
    Charles
    Vehicle:
    1977 CJ5 with 304 and T-176
    T-176 Transmission with Dana 300
    Did you doe yours soa? Or just went with yj springs?
     

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