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gear ratios question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by one, Feb 22, 2003.

  1. one

    one Registered Member

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    Is there a gear ratio guide out there somewhere? I am going to run 35's on my 88k5(10bolt rear) and need to find out what gears I should run with them(daily driver, highway use). Do the 12 and 14 bolts run lower gears from the factory?
    Ben
     
  2. heavy4x4

    heavy4x4 1/2 ton status

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    Play around with this
    What you're shooting for is to keep the same rpm's at the same speed after you get the bigger tires. For example - in my case, with 29 inch stock tires and 3.42's, a 4.10 ratio would be best for my 33's. So, play around with that to see what you'll want.
    All of the axles (10, 12, and 14 bolt) can have various ratio's depending on the vehicle they came in and the options the vehicle had (ie, towing package, manual tranny, etc). Generally, you'll find 4.10's in the majority of 14 bolts.
     
  3. RustBuket

    RustBuket 1/2 ton status

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    If you need more torque, gear down (the number gets bigger when gearing down).
     
  4. Tice

    Tice Registered Member

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    the new ( april 03) issue of Fourwheeler has a chart in it that may help. /forums/images/graemlins/k5.gif
     
  5. BigRed89

    BigRed89 1/2 ton status

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    I've used www.4lo.com many times. It comes in handy.
     
  6. one

    one Registered Member

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    Thanks. . . I think I'm going to go with 4:11's.
    As always CK5 comes through again!
    over'n'out
    Grateful Ben
     

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