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  1. #1

    Default roof cargo boxes

    Hey there. I'm looking for help on roof boxes. I have a 2008 Suburban Z71 black and the boxes that I have in mind are the Thule Atlantis 2100 ( 21 cu. ft. and 18 inches high ) and the Spirit 1600 ( 16 cu. ft. and 14 inches high ). They are both gloss black to match the Suburban. Question is will the 4 inches extra make a big difference and do these things realy sap the fuel efficiency. I was told once that the bigger of the two was more for around town and not for highway speeds. I'm taking the family cross country this summer. From Florida to Seattle Washington and back and need more cargo area. We did it last year and it was a tight fit. Still one of the best trips we had. If anyone has had experience with a cargo box and any info I would much appreciate the help. Thanks, Marcus

  2. #2


    I did have a box from Sears back in 97 with my Tahoe and that was the worst trip I ever took. The thing made so much noise and the vibration was bad.

  3. #3


    Welcome to the GMTruckClub!

    2010 Z/71 Colorado C/C
    Black 4X4 w/5.3L V8
    2007 Winnebago Adventurer
    w/8.1L Chevy & Allison 6spd.
    Canyon Lake, Texas

  4. #4


    Welcome to the site!!
    If you find yourself slipping,.....tie a knot.....hold on tight

    2008 silverado
    1500 crew cab
    5.3 L 4x4
    Borla exhaust, rbp black tip
    tint, bed liner
    2.25 in ready lift leveling kit
    18x9 rbp 94r
    33x12.5x18 toyo mts

  5. #5
    Eddie Z71's Avatar
    Join Date
    Mar 2009
    Colorado Springs, CO
    Blog Entries


    Hi, and welcome to the site!
    Eddie , 2000 Chevy Tahoe Z71 (old style)

  6. #6


    Sorry, the only roof rack I have had is the stock one on my wifes Nissan Xterra, but welcome!

    Bobby - North Carolina
    2008 4x4 5.3L V8
    6" Suspension Lift and 1.5" Body Lift
    20x9 Ballistic Jesters w/35" Toyo Open Country MT's & 1.5" rear wheel spacers
    4:56 Yukon Gears
    Hypertech Speedometer Calibrator
    Baja style bed mount spare tire carrier
    Flowmaster 40 series dual exhaust
    Recon Smoked LED tails/3rd brake lights/black projectors w/switchback LED's in the corners
    N-Fab Nerf Steps
    K&N CAI
    No Fear Pedals
    Tint, Line-X bedliner, Window visors, Rear wheel well liners
    Painted front grill, bow ties and door badges, de-"lettered" tailgate
    Powder coated front and rear bumpers

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