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Gear Ratio? Need Opinions

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Hossbaby50, Feb 8, 2002.

  1. Hossbaby50

    Hossbaby50 3/4 ton status

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    Here is the situation. I am going to reaxle and regear this summer. I am leaning toward 4.10's. I have 32's now, but plan on 35's (in a couple years). I drive my truck on the street alot, so gas mileage is a factor, but I do have a 700R-4 which helps. I have been toying with putting in 4.56's but that is a little to low for me I think. Does anyone make the 4.29's for a 14bff and a 10bolt? I can't find anyone who does. If anyone has 4.10's and 4.56's with 33-35" tires I'd like to know how you like them and if you would do anything different if you had it to do again. Thanks

    Harley

    My Chevy isn't broken, its just out of gas.<P ID="edit"><FONT class="small">Edited by Hossbaby50 on 02/08/02 06:45 PM.</FONT></P>
     
  2. k20

    k20 3/4 ton status

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    Re: Gear?

    i got a th400, 4.10's, 33's(measure 31.9), 10 bolt front and 14SF rear. without an OD the 4.10 will turn some RPM's on the highway, but in street drivin it gives fair go, with the 350TBI. if i had an OD id probly go with 4.56's with the 35's, but since i got no od, ill probably stick with my 4.10's.
     
  3. Hossbaby50

    Hossbaby50 3/4 ton status

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    top

    My Chevy isn't broken, its just out of gas.
     
  4. RESTORE89

    RESTORE89 1/2 ton status

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    i agree with K20
    i have a 700 with 4.10 and 33 MT's and i have plenty of low end torque, and still get 16+ mpg
    at 75mph, and if i was going to 35's i would say for sure use 4.56's
    i think you would regret having 35's and 4.10 if you are going to regear anyway

    It needs a bigger motor.
    what's in it now?
    doen't matter it NEEDS A BIGGER MOTOR
    89 350tbi/700r4h/np208/4.11's
     
  5. DesertDueler

    DesertDueler 1/2 ton status

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    Hey Hoss, I run 4.56s with my 35" MTRs. I can cruise down the freeway no problem at 80-85 mph and still get 15 mpg. And I am still have a carb:) 350, 700r4, 208, 4.56s

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  6. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    get 4.56s. That way, when you realize the error of your ways (picking 35s) and want 37s, you'll still be ok gear-wise. ;)

    J


    See the on-going build up of my '85 Jimmy! <a target="_blank" href=http://community.webshots.com/user/jekbrown>http://community.webshots.com/user/jekbrown</a>
     

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