Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

spring perch questions

Discussion in 'The Garage' started by big_truxx, Jan 29, 2005.

  1. big_truxx

    big_truxx 1/2 ton status

    Joined:
    Oct 8, 2004
    Posts:
    2,272
    Likes Received:
    0
    Location:
    Canaan, Maine
    I know the 14ff 1ton is different from the 3/4 on the spring perch spacing. Does that mean that the D70 has the same spacing as the 1ton 14ff? Also does the D60 have the same spring perch spacing as any other front end, or is that different too?
     
  2. smokkey1

    smokkey1 1/2 ton status

    Joined:
    Jan 7, 2004
    Posts:
    2,677
    Likes Received:
    2
    Location:
    Los Angeles, CA
    front gm D60 is the same. not sure about the 1 ton D70.
     
  3. big_truxx

    big_truxx 1/2 ton status

    Joined:
    Oct 8, 2004
    Posts:
    2,272
    Likes Received:
    0
    Location:
    Canaan, Maine
    :D That's very good info for me :waytogo: Thanks a lot.

    Can anyone tell me if the spring perch spacing on the D70 (obviously a one ton dually) is the same as the 14ff ton or are they like 1/2 & 3/4?
     
  4. big_truxx

    big_truxx 1/2 ton status

    Joined:
    Oct 8, 2004
    Posts:
    2,272
    Likes Received:
    0
    Location:
    Canaan, Maine
    Can anyone tel me if the spring perch spacing on the D70 is like the 14ff ton version or like the 1/2 3/4 tons??
     
  5. u2slow

    u2slow 1/2 ton status

    Joined:
    May 9, 2001
    Posts:
    2,217
    Likes Received:
    0
    Location:
    BC Canada
    The 1-tons have the same spring spacing (40.5") wether is a 14FF SRW, a 14FF DRW (C&C), or a D70 (DRW pickup).
     
  6. big_truxx

    big_truxx 1/2 ton status

    Joined:
    Oct 8, 2004
    Posts:
    2,272
    Likes Received:
    0
    Location:
    Canaan, Maine
  7. big_truxx

    big_truxx 1/2 ton status

    Joined:
    Oct 8, 2004
    Posts:
    2,272
    Likes Received:
    0
    Location:
    Canaan, Maine
    Can anybody tell me why the spring perches are different on the one tons? What GM did to make them that way? I am curious to know what's different about the suspension/frame or mounts etc :D
     
  8. cyclone

    cyclone 1/2 ton status

    Joined:
    Oct 11, 2004
    Posts:
    243
    Likes Received:
    0
    Location:
    Sonoma, CA
    1 tons, my guess

    My guess the reason the 1 ton brackets are closer to the frame is to lessen the leverage created on them by carrying heavy loads, again my guess.
    Anyone else? Had wondered this my self when I did my swap.
     
  9. sweetk30

    sweetk30 professional hooker Premium Member

    Joined:
    Nov 1, 2004
    Posts:
    25,548
    Likes Received:
    543
    Location:
    horseheads , ny 14845
    to clear the offset of the bigger brakes possibly . the world may neve know???????
     
  10. big_truxx

    big_truxx 1/2 ton status

    Joined:
    Oct 8, 2004
    Posts:
    2,272
    Likes Received:
    0
    Location:
    Canaan, Maine
    yeah... I agree we may never know. I mean it's only an inch difference IIRC and that'd mean 1/2" on either side... not enough to make any sort of difference in my book :dunno:
     
  11. u2slow

    u2slow 1/2 ton status

    Joined:
    May 9, 2001
    Posts:
    2,217
    Likes Received:
    0
    Location:
    BC Canada
    I can't imagine a 1-ton C&C getting away with a wider perch spacing ;)
    [​IMG]


    The other issue is with a 1-ton is the shock placement. It may be a desireable feature for body upfitters to *not* have a shock obstructing a prime mounting location. The outboard shocks on the 1/2 and 3/4-ton should produce a slightly better ride.

    The 1-ton SRW brakes still fit on a truck with 3/4-ton spacing.
     
  12. big_truxx

    big_truxx 1/2 ton status

    Joined:
    Oct 8, 2004
    Posts:
    2,272
    Likes Received:
    0
    Location:
    Canaan, Maine
    Yes that pic shows very well why the spacing is the way it is ;) :waytogo: Guess I can stop wondering now and reweld new spring perches on the D70 when I get my burb project in the next few months :D
     

Share This Page