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What gears to run..?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ArrowheadK5, Aug 31, 2001.

  1. ArrowheadK5

    ArrowheadK5 1/2 ton status

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    Now that I kinda understand how the gear ratios work ( I SHOULD be able to get it, I'm about to start an AP Calculus class i school :(...), are 3:07s fine for driving everyday on standard 33" tires? Will I still have the "kick" I like so much about my K5?

    Four wheel drive, four wheel expenses...
     
  2. Pugsley

    Pugsley 1/2 ton status

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    With 3.07's you won't have too much off the line power with 33's, 3.73's would be much better, and 4.10's would be ideal. 3.07's with 33's will give you an effective ratio of something like 2.60.

    1 tequila 2 tequila 3 tequila Floor
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  3. Mreetz

    Mreetz 1/2 ton status

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    I'm runnin 35s on 3.73, highway runs are great, off road is still good too!

    1984 K-5
    4" lift
    35x12.5 MTs
    buildin a 400 for it, any info greatly appreciated
     
  4. Pugsley

    Pugsley 1/2 ton status

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    Mine's great with 33's and 3.73's, but I want to upgrade to 4.10's for a little extra push when passing.

    1 tequila 2 tequila 3 tequila Floor
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  5. ArrowheadK5

    ArrowheadK5 1/2 ton status

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    I guess I didn't mean to say that I want to drag race, besisdes, I need it to be sorta tame so I don't slide all over on the ice and snow up here in MN. Just so I can teach the little snot trying to beat me out of the school parking lot in a Ranger what a TRUCK is. Ha!

    Four wheel drive, four wheel expenses...
     
  6. ArrowheadK5

    ArrowheadK5 1/2 ton status

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    OK then, say hypothetically I had 3:73s and 3:07s. Which would be best to drive every day, sometimes in snow/ice/slush, and still maintain respectable acceleration?

    Four wheel drive, four wheel expenses...
     
  7. Mreetz

    Mreetz 1/2 ton status

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    My 3.73s work great here in Denver, snow and slush don't stop me here!

    1984 K-5
    4" lift
    35x12.5 MTs
    buildin a 400 for it, any info greatly appreciated
     
  8. ArrowheadK5

    ArrowheadK5 1/2 ton status

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    Ok, so I most likely want to go with the 3:73s...
    How hard is it to swap them? Would I find it in the Haynes manual by chance? Sorry, I'm really a beginner and seem to have a thick skull tonight for some reason...

    Four wheel drive, four wheel expenses...
     
  9. Mreetz

    Mreetz 1/2 ton status

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    I've worked on most everything, carbs, engeine swapping, headers, intakes..... from everything I've heard, its best to let the pros handle the gears.

    1984 K-5
    4" lift
    35x12.5 MTs
    buildin a 400 for it, any info greatly appreciated
     
  10. '73 K5

    '73 K5 1/2 ton status

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    When I got my Blazer it had 3.07 gears with 28 inch tires...and it was painful to drive on the street..esp with the SM465. An automatic truck with crappy gears will be a little easier to drive. It now has 4.10's and 33's...what a perfect combo...I can still drive on the highway at 65 easily and it pulls really hard off the line...and when I put it in low gear I can idle up a wall pretty much.

    '73 K5
    Chevy good...Ford bad
     

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