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what are the ratio splits for 10 bolts

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BIGRIG, Dec 9, 2002.

  1. BIGRIG

    BIGRIG 1/2 ton status

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    Is it true that you can run the same carrier for 2.73+, or is there something that you have to change with the gears?

    Thanx
    Chris /forums/images/graemlins/usaflag.gif
     
  2. 90K5

    90K5 1/2 ton status

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    im pretty sure its true
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

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    old email I saved

    "The 8.5" 10-bolt has one carrier break. All gear ratios numerically lower
    than 2.73 use a 2-series carrier. 2.73 and numerically higher use a
    3-series carrier. If you have a 2-series carrier, you can use 3-series
    gears on it with the addition of a spacer. "
     
  4. BIGRIG

    BIGRIG 1/2 ton status

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    thanks! just what I needed to know!

    Chris
     
  5. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    As long as your truck didn't come w/ 2.43s you don't need to change. The next step up was the 2.73, which as stated above, goes all the way up.
     
  6. R72K5

    R72K5 Banned

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    2.43 was an available ratio in the 8.5" in these ? in the trucks ?

    only ones i knew of in truck 8.5" were 2.73, 3.08, 3.42, 3.73


    now cars is another story, caddies used 2.21 and theres an oldsmobile ratio one step higher ratio than that even ! 2.0-something
     
  7. BIGRIG

    BIGRIG 1/2 ton status

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    Yep! and guess who got screwed with 2.73's... /forums/images/graemlins/thumb.gif this guy!!
    Not to great with 35's but I do get 17mpg roughly with a t350 and a stroker motor /forums/images/graemlins/shocked.gif

    Chris
     
  8. bigjbear

    bigjbear 1 ton status Staff Member Moderator

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    I'd have to look it up again to find out for sure, but that is what I remember reading. I don't remember what years it used or if was only a 2WD thing but they are out there. The highest I have had in any truck I have owned were 2.73s
     

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