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Thread: 85 GMC Sierra Long Bed

  1. #1

    Default 85 GMC Sierra Long Bed

    This is my new to me truck. I go by Jay R.
    Any thoughts on glow plug controller brands?
    Attached Images Attached Images

  2. #2
    Join Date
    Oct 2001
    Location
    Granby, Missouri, USA
    Posts
    3,010

    Default

    Nice truck!

    Wow, with a 2.73 rear axle and 4 speed auto, that rig should be a real fuel mizer. Any idea on what MPG's you're pulling down yet?

    I used to have a square body 3/4 ton with a 6.2L, 4 speed auto, and 4.10 rear axle, and I could pull down 17 - 18 mpg all day long. I can't imagine what you could achieve with a 2.73, although I'm sure it bogs down pretty easy in overdrive.

    Casey
    1995 K1500 Tahoe 2 door, 6.5LTD, 4L80E, NP241, 3.42's, 285/75R16 BFG K02's; 1997 506 block; Kennedy OPS harness, gauges, Quick Heat plugs, and TD-Max chip; Dtech FSD on FSD Cooler; vacuum pump deleted, HX35 turbo, Turbo Master, 3.5" Kennedy exhaust, F code intake; dual t/stats, HO water pump, Champion radiator; Racor fuel filter

  3. #3

    Default

    Thank you. Yes it is a sloth on hills for sure but it is capable for the light duty homeowner use I had in mind when I was truck shopping. It has a laundry list of issues I am working through so I haven’t driven it too much yet. I did manage to check fuel mileage once so far and it came back at 40mpg. That seems magical and too good to be true. When I get it roadworthy for daily use I plan to check it several more times and get an accurate number over a longer distance and multiple fill ups.

  4. #4
    Join Date
    Oct 2001
    Location
    Granby, Missouri, USA
    Posts
    3,010

    Default

    Yeah, 40 mpg is not realistic. Probably mid to upper 20's will be more likely.

    Casey
    1995 K1500 Tahoe 2 door, 6.5LTD, 4L80E, NP241, 3.42's, 285/75R16 BFG K02's; 1997 506 block; Kennedy OPS harness, gauges, Quick Heat plugs, and TD-Max chip; Dtech FSD on FSD Cooler; vacuum pump deleted, HX35 turbo, Turbo Master, 3.5" Kennedy exhaust, F code intake; dual t/stats, HO water pump, Champion radiator; Racor fuel filter

  5. #5
    Join Date
    Apr 2001
    Location
    Newberg Oregon
    Posts
    11,859

    Default

    We owned a 1986 Chevy 2500 Burb 4x4 with the 6.2

    It was near new when we bought it and on a trip to southern California from NW Oregon down I 5 we managed 26 mpg on one leg of the trip.

    Nothing below 20 though.

    22-26 HWY is quite normal if things are in good shape
    (1) 1995 Suburban 2500 4x4
    (1) 1997 Astro
    (1) 2007 Chevy Avalanche
    THIS IS BOW TIE COUNTRY

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