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what gears to use?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by bigjblazer, May 11, 2002.

  1. bigjblazer

    bigjblazer Registered Member

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    i got an 84 k-5 w/305. Im goin up to 37" SSR's, and i have 3.07gears now. What gears will i need to put in, for optimal performance?
     
  2. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    always depends on the type of wheeling... and what other gear reductions you have in your tranny/tcase... but all else being equal I'd go with 4.56 or 4.88.

    J
     
  3. TXsizeK5

    TXsizeK5 1/2 ton status

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    Do you have overdrive? If you do, 4.88's would be perfect. If not 4.56 will do fine. I have 4.56 with 35's and its great but i dont have OD so it kinda revs high on the freeway, thats alright though =)
     
  4. FRIZZLEFRY

    FRIZZLEFRY 1/2 ton status

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    I have 37" SSRs and I run 4.10s because I have a th350.The RPMs arent to bad on the freeway,its not a dog off the line, and I can crawl ok in low range.

    If I had an overdrive trans I would have gone 4.56.
     
  5. bigjblazer

    bigjblazer Registered Member

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    i have the 700r4 with overdrive, and i will be runnin 37"ssr's. im thinkin 4.56, would that werk alrite?
     
  6. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    if u have OD... go with 4.88s... that way, when u upgrade tires to 38-40s... you'll still be a-ok. /forums/images/icons/laugh.gif

    J
     

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