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What gears shoudl i run

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by K5silverado05, Jun 20, 2001.

  1. K5silverado05

    K5silverado05 Registered Member

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    I am looking to get a K5 for my first car when i turn 16 in a few months and i am a little concerned about gas milage. i know this isnt the greatest rig for people on a gas budget, but they are awesome and i want one. im thinking of putting either a 4" or 6" lift with 35" BFG muds. what gears should i be running, as this will mostly be an on-street daily driver with the occasionaly weekend run in the mud (no rockcrawling in this, paint is good). ill also use the k5 to tow our 21' boat trailer sometimes, weighs about 5,000lbs max i would guess, so what gears should i run, thanks
     
  2. Executioner

    Executioner 1/2 ton status

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    I heard from a couple of guy's that ran 2.76:1, and really liked them for the daily driver .
    Correct me if they are wrong.
    Hope this helps ya
     
  3. surg82k5

    surg82k5 1/2 ton status

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    i would say with 35's you should go with at least 3.73 gears preferable 4.10 or 4.56 also i always consider my K5 a truck and in no way a car :) i have a 4" lift and plan on 35's. If you are gonna be pulling with your blazer and puching 35's definately 4.56 gears just an opinion though
    sergio
     
  4. FRIZZLEFRY

    FRIZZLEFRY 1/2 ton status

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    Ive got a 6" suspention and 2" body lift and run 35s.I had 3.73s and now have 4.10s.3.73s were ok I like the 4.10s alot better.If I had a 700R4 I would have got 4.56s.Mileage isnt too bad .

    <A target="_blank" HREF=http://community.webshots.com/user/beaterwhang>http://community.webshots.com/user/beaterwhang</A>
     
  5. K5silverado05

    K5silverado05 Registered Member

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    thanks for the posts, i guess ill definitely use 3.73, if not 4.10 or 4.56, what came standard on the blazers? im looking at an 87 or 89 with 10 bolts front/rear (yuck)
     
  6. surg82k5

    surg82k5 1/2 ton status

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    my 6.2L k5 came stock with 10's front and back and 3.73 gears.
    sergio
     
  7. Executioner

    Executioner 1/2 ton status

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    A bunch of guy's told me that 2.76:1, came standard on many Blazers.
    Corret me if they are wrong.
     
  8. MaxCrack

    MaxCrack 1/2 ton status

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    I had 3.07's with 35" tires for quite a while. It wasn't too bad, but I had to ride the clutch a little to get it moving. 3.73 would have been better and I think 4.10 would have been much better. But the 3.07's did help the gas milage on those 3 and 4 hour trips to the mountains.

    Now I'm running 4.88 and planning on 39.5" tires very soon. Can't wait.


    That's because I'm the devil.
     
  9. Sparky87k5

    Sparky87k5 1/2 ton status

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    If I read your post correctly, and having been 16 once, money is going to be tight, especially if you're worried about gas mileage. Having said that, fuel and tire mileage will be issues that are needing realistic answers. 4.10 or 4.56's are good answers but not realistic for the few times you run the mud. Look for 3.73's, 4" lift and 33" all terrain tires. You'll get reasonable fuel mileage both on and off road, plus gain tire mileage and better on road traction, something new drivers need. Young drivers (Been one & raised 5) need good handling, control and safe performance levels. Their budget and skill level demand this.

    87 K5, D60 & 14FF, 5 sp & NP208 & 383 stroker. Build it Bulletproof and take it fishing!
     
  10. CaptCrunch

    CaptCrunch 1/2 ton status

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    I have 35's, a 6" lift and 4.10's and I really like it. Works very well in town for get up and go and for guys that have to hit higher freeway speeds as well it doesn't kill ya. I do have a 700r4 w/ the overdrive though so that helps... If you have OD and rarely hit more then 45 or so mph you'll gain quite a bit of power and if you keep your foot out of it mpg w/ the 4.56's... otherwise I'd go 4.10's for a daily driver. If you are stuck w/ no OD keep w/ 3.73's or 4.10's depending on your driving.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <A target="_blank" HREF=http://www.geocities.com/milnerlives_2000/blazer.htm>http://www.geocities.com/milnerlives_2000/blazer.htm</A>
     
  11. gokartergo

    gokartergo 3/4 ton status Staff Member Moderator

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    Most Blazer's came stock with 3.08"s
     
  12. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    Executioner&lt;
    Are you baiting thatK30guy and the rest of us...?

    You just want someone to say WRONG to you, eh?

    You are a character.



    Dave

    Don't Be Sexist - Broads Hate That
     
  13. Derf00

    Derf00 1/2 ton status

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    You were misinformed by that bunch of guys. The ratio is 2.73, Glovebox code GU2.

    Derf00

    "Four wheel drive allows you to get stuck in a more inaccessible place."
     
  14. thatK30guy

    thatK30guy 1 ton status Premium Member

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    ROTFLMFAO!!!

    I read this post earlier today and thought, "I am taking a break with this one!" [​IMG]

    BTW, Executioner, you said above, 'correct me if I am wrong', well, let me help you. The actual ratio is 2.73:1. Not 2.76:1. But you were pretty close. [​IMG] I am NOT 'flaming' you here, just helping out! [​IMG]


    <font color=red>I m so we Todd did.
    I m sofa king we Todd did.</font color=red>
     
  15. Executioner

    Executioner 1/2 ton status

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    See we are having fun !
    You are right, and those guy's are Wrong.
    I stand corrected, and thanks for doing it without my rear end Tool ! (LOL)
     
  16. 1990SilveradoK5

    1990SilveradoK5 1/2 ton status

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    The two of you are going to keep this alive for awhile, I can tell.

    If it is all for the sake of keeping the K5 on top and this site alive and kicking, keep it up.


    Gone Large and Loving It.
    Keith
     
  17. californiak5

    californiak5 1/2 ton status

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    [​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG]

    So Wes and Ex, Should I go with the 2.73:1 gears with my 35's? Will it give me lots of low end power? Or maybe I should use 1.16:1 gears for better HWY mileage.

    [​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG][​IMG]

    Stop it..................... my sides are hurting.

    See Ya

    [​IMG] <font color=green>Born to Drive My K5</font color=green> [​IMG]
     
  18. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    On the 2.73s: I think 500 RPM at 70 MPH would be cool. And I am sure I could make a pass within 100 miles (downhill with a tailwind).
    I am gonna change my 4.10s for 2.73s. LOL

    Dave

    Don't Be Sexist - Broads Hate That
     
  19. Executioner

    Executioner 1/2 ton status

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    Well let's see , if you have the ORD Doubler, you will get all kinds of low end power !
    Hay, I am going to mexico in the next coulpe of weeks, do you know if Corona thats not exported to the U.S.A.
    is date coded ? Can you tell me how to read the date code ?
    Thanks alot
     
  20. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    Grease your muffler bearings before you go!

    Dave

    Don't Be Sexist - Broads Hate That
     

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