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spring pad spacing

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by greythorn3, Dec 19, 2006.

  1. greythorn3

    greythorn3 1/2 ton status

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    i was wondering what spring pad spacing on a 70 blazer was compared to a say 84 k20? im thinking about swapping ina 14 bolt and getting rid of my 12 bolt...


    Ray

    :eek1:
     
  2. Yukon Jack

    Yukon Jack 1/2 ton status

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    You will have to move the spring perches if you use that axle. If you get a 14 bolt from a 1 ton, the spring perches will be in the correct position.
     
  3. 55Willy

    55Willy 3/4 ton status

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    i wanna say it is a 1.5" difference between a 67-72 k5 and a 80's k20

    On my 68 i used a k20 axle and i used the k20 spring brackets.
    I didn't wanna torch the axle mounts as I may swap axles again.
     
  4. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    1st gen blazers are 40.5" spring pad spacing. The 2nd gen blazers are 42.5" spacing.
     
  5. CDA 455

    CDA 455 3/4 ton status

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    Am I correctly assuming you're talking about REAR spring perches :eek1: :dunno: ?

    I'm about to put in a CUCV front D60 and their spring perches measure 32".
     
  6. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    Yes i was refering to rear, ALL GM fronts are the same.
     
  7. CDA 455

    CDA 455 3/4 ton status

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    Whew! Thanks for the confirmation :D :bow: !
     
  8. greythorn3

    greythorn3 1/2 ton status

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    hangers?

    are you talking about the rear spring pad hangers? then you dont need to move perches? did you use the offroad design revers ones for a 73-87? or the stock ones of the 80's truck?

    ray
     
  9. greythorn3

    greythorn3 1/2 ton status

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    Yukon Jack

    i got a flatbed 69 truck too! hahah yurs is nice! king of a bad picture! you get the idea though.


    [​IMG]
     
  10. 55Willy

    55Willy 3/4 ton status

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    what i used was the axel out of a 78 burb. so I used a 2nd gen ORD flip with some pickup front hangers. also gained 3" more lift cause of the height difference
     
  11. greythorn3

    greythorn3 1/2 ton status

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    55wilyl

    thats what i would like to do in order to get rid of these damn 4" blocks in the rear. i hate blocks.. do you happen to have a part number?
    Ray
     
  12. 55Willy

    55Willy 3/4 ton status

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    I can look tonight, they were all stock GM pieces so i think the GM tag is still on them. i had blocks too but after doing the brackets I won't be needing them.
     
  13. greythorn3

    greythorn3 1/2 ton status

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    part #'s

    the ORD ones?
     
  14. 55Willy

    55Willy 3/4 ton status

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    ord's part number is on thier site. I already had a 2nd gen flip on my 77 so thats why I wanted to use it. i was gonna drill the front brackets off of the 77 k5 but the truck ones i got were taller. the old ones on my 68 looked more like a 2wd model they were really short, spring eye was about 1" below the frame.
     

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