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Dif between k20 & k30?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Mudstud, Aug 5, 2001.

  1. Mudstud

    Mudstud 1/2 ton status

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    What's the dif? In think the k20 has a Dana 44 up front and the k30 has a Dana 60 up front, both have ff 14 bolts. Is this right?

    Stuck is a state of mind!

    Mudstud
    76K5 sb400/350/203parttime/3.73-D44/GM12 locked
     
  2. thatK30guy

    thatK30guy 1 ton status Premium Member

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    This question would take too long to answer to.

    Some basic pointers:
    The frames are both different. A K20 shares the same frame as a K10 longbed. The K30 frames are totally different. They are bigger, thicker, heavier, stronger, etc.
    The K20 shares the same front axles as the K10. The 20's can have either the 14FF or SF, depending on the year of the truck. K30's have the D60 front and 14FF, and D70 rears on dually applications.
    T-cases can be different for both depending on the years. Any K20 from 73-80 will have either the 203 or 205. All 80 models will have the 205. 81 to 87 K20 trucks, and up to 91 Subs will have the 208 t-case. K30's will have the 203 or 205 from 77 to 79, and then from 80 all the way up to 91, the 205 will be found in everyone of them, EXCEPT for the CUCV military trucks, which will have some 208's and some 205's with most of them having the 208's.
    The K30 weighs approx. 1000 lbs. more than a K20 and K10. The weight comes from the front D60 and the frame. My past few K30's I have had, weighed in the range of 5500 lbs. dry, with a 454.

    It boils down to the K20 shares many interchangable parts with the K10, except for the 14FF and SF which are the 8 lugs pattern.

    The K30 is in a class of its own, all by itself. [​IMG]

    <font color=blue>Daddy told me while learning to pee......"if you shake it more than twice, then you are playing with it!!!"</font color=blue>
     
  3. wayne

    wayne 3/4 ton status

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    And so are you!!!!![​IMG][​IMG]

    <font color=blue>Wayne<font color=blue>
    <font color=blue>Happy Trails<font color=blue>
     
  4. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Thanks man!! [​IMG] [​IMG]

    I sure hope so!!! [​IMG] [​IMG]

    <font color=blue>Daddy told me while learning to pee......"if you shake it more than twice, then you are playing with it!!!"</font color=blue>
     
  5. Brians 60s

    Brians 60s 1/2 ton status

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    Don't listen to that k30 guy Wes, we all know he is full of it.
    Actually there is no difference....

    HHMMMM.... by the way. I just hapen to have a k20 I would love to trade you for a k-30, but there is no difference.....

    IT'S A 1 TON THING.... IF I HAVE TO EXPLAIN IT, YOU WOULDN'T UNDERSTAND!!!
     
  6. pcorssmit

    pcorssmit 1/2 ton status

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    The 3/4 Subs didn't switch to the 241 around '88 like the 1/2 tons did?

    Pete

    '83 K5, 350 TBI (ex 6.2), 700R4, NP208, Dana 60/14 bolt, 4.56s, Detroits, 3" lift, 15-39.5x15 TSLs
    '97 Dodge 2500 4x4 CC LB Sport, Cummins 5 spd
     
  7. MRBIGBLOCK

    MRBIGBLOCK 1/2 ton status

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    the main dif-rence is about $1200-$1800 dollars dif-rence
     
  8. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Awww come on, Brian! You trying to "score" the better deal between a K20 and 30?!?! [​IMG]

    Surely you know the differences between the two!!! I don't blame you for "fooling" the others so you can come out on top!!! [​IMG] [​IMG] [​IMG]

    <font color=blue>Daddy told me while learning to pee......"if you shake it more than twice, then you are playing with it!!!"</font color=blue>
     
  9. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I have read above and it hasn't been specifically pointed out. In 1981 or 1982, I think it was '82, GM started putting 14 bolt semi floaters in their K20s. It looks like a 12 bolt on steroids, and you can find it bolted to my rear springs, on 20% of 88-98 Z71 Extended cabs, (have to have a special package for it) 1990 454 SS Pickups, and '99 and newer 2500s (NOT HDs, regular 2500s that look like the regular 1/2 tons).

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  10. bigk

    bigk 1/2 ton status

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    The biggest difference is that a K20 is what I got and a K30 is what I want.

    Karl
    Temporarily Unemployed Underwear Model
    87 3/4 ton
     
  11. Brians 60s

    Brians 60s 1/2 ton status

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    Wes, just f-ing with ya. I think between the 2 of us we would find a way to score every good deal on a k-30 that there was to be found. It is just a shame they don't make the REAL
    1 tons anymore, it also sucks that the cucv's are mostly phased out of the military in favor of the Bummer. Oh well, there are still some around, too bad most of what I have seen lately is dually.

    Karl, I couldn't have said it better myself.

    IT'S A 1 TON THING.... IF I HAVE TO EXPLAIN IT, YOU WOULDN'T UNDERSTAND!!!
     

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