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91 Suburban mileage?

Discussion in '1982-Present GM Diesel' started by buknbronco78, Dec 24, 2001.

  1. buknbronco78

    buknbronco78 Registered Member

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    Location:
    Wayne, NJ (passaic county)
    Would a diesel Burb get around the same good mileage numbers as blazer. Obviously your still moving some more metal, but in general. And are there still aftermarket turbo kits for the 6.2L?
     
  2. 3car

    3car 1/2 ton status

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    dont know about mileage,but a talked to banks a couple of weeks ago,2000 for a complete turbo kit.check out their websight.banks 6.2's kick ass.

    eatin'fords and shittin'dodges down in the sunshine state.
     
  3. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    A little more info is needed-

    1. What gears are you running?

    2. What tranny is behind the 6.2?(I assume it's a 700r4)

    3. 2WD or 4x4?

    On average, a well-maintained 6.2 should get an average of 18-26 MPG. Gearing plays a big role, as well as how heavy you are on the pedal. In the city, I get around 22MPG. On the highway, my 6.2 gets me around 26 MPG at 55, and closer to 22 MPG at 65-70. I get 18-20 when I tow.

    If the truck's in good shape and worth the investment, I highly recommend installing the Banks system. You can expect a 15-20% increase in power, and from what I've heard you'll get at least 5 MPG better fuel mileage..........

    <font color=blue> NEVER FORGET, NEVER FORGIVE, NEVER SURRENDER<font color=blue>
     
  4. Heavymetal

    Heavymetal 1/2 ton status Premium Member

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    CanmoreK5, those are some pretty awsome numbers! I'd be interested in knowing what your setup is. The reason being I get around 9 mpg on the highway. I'd like to be able to get 20 mpg, with 35 inch tires and a 4 inch lift, out of my burb.

    Thanks,
    Mike..

    77'/87' 3/4 ton Burb, 400cu, sm465, np205, 14boltff, dana44, 4.10s, 35in BFG's.
     
  5. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    To be honest, the mileage I get from my 6.2 are BETTER[​IMG] than the numbers I gave. That's because my diesel is in a 1/2 ton 2WD pickup(with 3.42s). I do have a buddy with an 85 K5 6.2 700r4 w/ 3.73s and the numbers I quoted are right in line with his mileage.

    My 1/2 ton gets 1300kms(800 miles) out of 120 litres(30 gallons) from full to empty in a combination of city and highway. If I stick to speeds of 55MPH on a long highway drive I can push it up to 1450kms(900 miles) out of the same tank.[​IMG]

    <font color=blue> NEVER FORGET, NEVER FORGIVE, NEVER SURRENDER<font color=blue>
     
  6. Heavymetal

    Heavymetal 1/2 ton status Premium Member

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    30 mpg! I would love to get that kind of mileage! Unfortunately I have 3 kids and a wife to haul along with all our gear. So a suburban or crewcab is the minimum for me. And of course it has to be four wheel drive. 4 inches of lift and 35 inch tires maybe a bit much, but is does come in handy once in a while. I am considering buying a diesel crewcab 4x4, but I want to make sure I will be able to get a minimum of 20 mpg on the highway with the lift and tires. I have read posts on here for diesel crewcabs being closer to 13 mpg. I guess I will have to continue my research. Thanks for the reply.

    Mike.


    77'/87' 3/4 ton Burb, 400cu, sm465, np205, 14boltff, dana44, 4.10s, 35in BFG's.
     
  7. Suburbanite

    Suburbanite Registered Member

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    The '95 K3500 SRW CC 6.5TD I drive gets high 15's to low 16's in combined city/hiway with 4.10's &amp; 80mph on the hiway (interstate) &amp;, until recently, stock tires (LT245/75R16's). "City" is mostly rural driving -- not much "stop &amp; go".
     

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