RCLB K2500, K3500 Differences?

Discussion in 'Towing' started by SPDMETL, Jan 21, 2018.

  1. SPDMETL

    SPDMETL Newbie

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    Frame, brakes, axles? Engines and transmissions are the same across the board, so what's different?

    Does the 3500 come standard with 4.10?
     
  2. smdk2500

    smdk2500 OBS Enthusiast

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    I would assume that the spring rates different at least in the rear. I don't know much about the torsion bars in the front of a 4wd but i would assume they would be heavier as well.
     
  3. evilunclegrimace

    evilunclegrimace I'm Awesome

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    What is the gvwr for the trucks. If they both are 8600 GVW then they are most likely the same all things being equal. The 2500/3500 trucks can be had with most of the gear sets that GM offered. The front torsion bars are the same basic spring the spring rate is what changes.
     
  4. Supercharged111

    Supercharged111 I'm Awesome

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    8600vs 9200 GVWR for SRW trucks. Rear end gets an upper overload that the 2500 doesn't and 1 ton has larger transfer case. AFAIK the rest is the same.
     
  5. Nathaniel2g

    Nathaniel2g Rusty Islander

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    Rear axles are different - 2500 has a 14 bolt semi-float and the 3500 has a 14 bolt full float, in most cases. Also, appears you could get a 305 in the 2500 but not in the 3500 (obviously a LD 2500).
     
  6. evilunclegrimace

    evilunclegrimace I'm Awesome

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    Another thing that we need to know is the year of the truck. The 4.3 was the base engine in a 3500 in 1988. The early trucks did not have a 9200 GVW and the rear differential could be Semi or full float.
     
  7. Supercharged111

    Supercharged111 I'm Awesome

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    Full float was optional in a 2500, I believe a diesel or big block automatically got you one.
     
  8. blazen71

    blazen71 Newbie

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    You are correct.
     
  9. Boomhower83

    Boomhower83 Newbie

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    I have often wondered this myself. I have a 2000 K3500 reg. cab 5spd I bought about 8 years ago (this truck is a beast and I love it!) and about a month ago I bought a 99' K2500 CCSB auto. Both have the 7.4. Just by looking underneath I can tell the drive shafts and rear axles are different but the front suspension and rear leaf springs look the exact same. I am also curious what the difference is between the SRW and DRW?
     
  10. Supercharged111

    Supercharged111 I'm Awesome

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    Driveshafts are gonna be different, I'm betting the CC had a carrier bearing. DRW axle was a different width but used the same leaf pack as SRW.
     

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