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CUCV QUESTION

Discussion in 'The Garage' started by uao85, Apr 4, 2004.

  1. uao85

    uao85 1/2 ton status

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    I was wondering what kind of mileage the military chevy trucks get with that 6.2 liter diesel they have.
     
  2. dremu

    dremu Officious Thread Derailer Premium Member

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    They're geared funny, too -- 3.08:1, as I recall... leastaways I'd consider it funny, being a gas person; maybe that's not odd with the relatively high torque from the diesel.

    Might post in the diesel forum here, see whatcha find.

    -- A
     
  3. smokkey1

    smokkey1 1/2 ton status

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    I thought they were geared at 4:10 or 4:56 /forums/images/graemlins/dunno.gif


    justin /forums/images/graemlins/burb.gif
     
  4. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    M1009 (Blazers) had the 3.08's and a TH400 with 31" tires. Cruise rpm at 65 mph would be 2200 rpm or so and the mileage would be in the 17-19 range. The M1008 (K30) had 4.56 gears and ~31" tires with the TH400 as well. Cruise rpm at 60 mph would be a very loud 3000 rpm. Mileage on that would be 13-15.

    The sweet spot for mileage with a 6.2 is ~1900-2100 rpm...much beyond that and mileage falls off a fair bit.

    Rene
     
  5. mud390

    mud390 1/2 ton status

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    I can't really say as far as highway miles. We never really got the ones we used above 35MPH. Except for that occasional midnight high speed check. /forums/images/graemlins/shocked.gif The ones we had did have 3.08 gears in them, which seemed odd to me too, but it worked. It seemed like we could go about week before having to fill up. The Blazer had a 32 gallon tank. Pretty much all we did was drive around in circles, back and forth between building, and idle. Hope that helps a little. /forums/images/graemlins/tongue.gif

    Kris
     
  6. grd2go

    grd2go Registered Member

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    The 1 ton military trucks either have 4:10 or 4:56 gears in the last 8 of them that I baught the milage with the two that were in running condition always got better than 12 mpg and on highway one of them got 17 mpg with 35s on it. The one with 4:10 gears have all been the airforce crewcabs. I still havent picked my last green chevy out at base but it is a one ton dually so it might be different.. /forums/images/graemlins/crewcab.gif /forums/images/graemlins/k5.gif /forums/images/graemlins/cool.gif
     

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