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gear ratio

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 79 K5, Feb 1, 2001.

  1. 79 K5

    79 K5 Registered Member

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    I'm considering buying new gears for my 79 K5. I'm running 33's now, but when the MT/Rs die, I'll probably move up to 35's. I know those tires can spin a little faster! Anyone have any suggestions on what ratio to run? I don't want to change again after getting 35's.

    Jesse
     
  2. fr8train

    fr8train 1/2 ton status

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    Go to this site, www.4lo.com, and use the gearing calculators. Your question has a lot of answers dependant upon your uses and running gear. I would go with 4.56. That me though. Hope this helps.
     
  3. BurbinOR

    BurbinOR 3/4 ton status

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    I too am about to go the route of setting up the gearing/tire combo for the future. I also agree with 35" tires, 4.56 seems about right. Turning 3000 rpm (give or take a couple hundred) at 70 mph is OK with me. I have a Turbo 350 trans, now if I had a reliable/built 700R4, I would go to 4.88's in a heartbeat.

    <font color=orange>'79 - 406 TPI -<font color=orange> K5#5 - <font color=blue>See it at---&gt;<A target="_blank" HREF=http://www.blazzinor.coloradok5.com>http://www.blazzinor.coloradok5.com</A>
     
  4. Jackson 88K5

    Jackson 88K5 1/2 ton status

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    <A target="_blank" HREF=http://www.4lo.com/>http://www.4lo.com/</A>

    If it breaks, upgade it.
     

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