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What gears to run??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by xxxcre10xxx, Jun 23, 2002.

  1. xxxcre10xxx

    xxxcre10xxx Newbie

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    Hey guys I am new to this site....very cool informative site. I am putting some 37 or 38 inch tires on my blazer. Im prolly gonna get a 14 bolt. What gear ratio should I get? I will drive on the road and then do a little mudding. Im not gonna climb mountains or rocks or anything like that.
     
  2. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    i would go with 4:56's if you have overdrive go with 4:88's /forums/images/icons/grin.gif
     
  3. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    For street and mud I'd go 4.10...plenty easier to find a 14 bolt with 4.10's too.

    Rene
     
  4. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    im running 4:10's with a sm465np205 and 38's and really wish i had at least 4:56's
     
  5. TXsizeK5

    TXsizeK5 1/2 ton status

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    I had 3.08's with a crappy 305 running 35's and I had almost no acceleration, it sucked horribly. I changed out to 4.56 and it has some decent accel. But if your engine is decent; then like mudhog said, no overdrive-get 4.56, overdrive- get 4.88's and if you ever plan to go 44 or something go for 5.13's /forums/images/icons/cool.gif
     
  6. or2play

    or2play 1/2 ton status

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    I'm planning on running 39.5 boggers and 5.13 gears. I'd go lower if the 14 bolt could take lower gears.
     
  7. RootBreaker

    RootBreaker 3/4 ton status Premium Member

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    WOW!!!!! 39.5 with 5.13!!!!!!!!!!
    damn... what is the top speed/rpm of that baby???
    I have 4.56's and with 33" tires she moved sluggish...
     
  8. BadDog

    BadDog SOL Staff Member Super Moderator Author

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  9. Diesel Dan

    Diesel Dan 1/2 ton status

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    </font><blockquote><font class="small">In reply to:</font><hr />
    WOW!!!!! 39.5 with 5.13!!!!!!!!!!
    damn... what is the top speed/rpm of that baby???


    [/ QUOTE ]
    Still less rpm than a stock truck with 4.10s and a TH400!
    All your older 3/4 &amp; 1 tons usually run in the 3000-3300 rpm going down the highway @ 70mph.
    I ran a 4sp equipped blazer with 4.10s and 38.5s, would have preffered 4.88s on the road.
     

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