GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER

Tailgate up or down

Discussion in 'Performance & Fuel' started by blacksilverado07, Jan 16, 2008.

  1. blacksilverado07

    blacksilverado07 New Member

    Joined:
    Jan 16, 2008
    Messages:
    92
    Likes Received:
    0
    do you go faster with the tailgate up or down? i have a single cab silverado v8 5.3 fleet side and i just lost a race to another single cab 5.3 but its a stepside.
    #1
  2. TahoeFever

    TahoeFever New Member

    Joined:
    Sep 18, 2007
    Messages:
    533
    Likes Received:
    4
    you get a better mpg less, wind resistance with the tail gate down cause it acts like a
    parachute :)
    Last edited: Jan 16, 2008
    #2
  3. RockHead

    RockHead New Member

    Joined:
    Mar 26, 2007
    Messages:
    715
    Likes Received:
    3
    Take it off :rofl:

    You will get more MPG with it down........ Will it make you go fasrter :no: push the gas to the floor :lol:


    Mark
    #3
  4. 95CTburb19

    95CTburb19 New Member

    Joined:
    Apr 5, 2007
    Messages:
    1,537
    Likes Received:
    1
    It really doesn't make a difference as far as speed but you get better mpg's with it up cause it makes some sort of vortex thing that effectively causes the wind to push the truck forward.
    #4
  5. blacksilverado07

    blacksilverado07 New Member

    Joined:
    Jan 16, 2008
    Messages:
    92
    Likes Received:
    0
    so i would go slower if i have the tailgate down
    #5
  6. 95CTburb19

    95CTburb19 New Member

    Joined:
    Apr 5, 2007
    Messages:
    1,537
    Likes Received:
    1
    maybe........
    #6
  7. blacksilverado07

    blacksilverado07 New Member

    Joined:
    Jan 16, 2008
    Messages:
    92
    Likes Received:
    0
    alright man thanks i hope that helps me next week i wanna rematch the same truck
    #7
  8. 95CTburb19

    95CTburb19 New Member

    Joined:
    Apr 5, 2007
    Messages:
    1,537
    Likes Received:
    1
    what speeds were you starting from/going to and does he have any work done to the truck? These could add to why you lost.
    #8
  9. blacksilverado07

    blacksilverado07 New Member

    Joined:
    Jan 16, 2008
    Messages:
    92
    Likes Received:
    0
    1/4 mile from a complete stop and we got up to about 90-95 his is completely stock and mine has 22's and a flowmaster exhaust but his is a stepside so the whole back is made of fiberglass and on the straight beds its made of metal
    #9
  10. Holy Smoke

    Holy Smoke New Member

    Joined:
    Nov 29, 2007
    Messages:
    284
    Likes Received:
    1
    If your race is for acceleration,,, take the tail off, and loose your spare, jack,tools, 1/4 tank of fuel, tire pressure max. on front, get the front up.
    If your racing for speed, tail up. The air pressure will build up inside and in front of the tail. Air over the cab will not drop down so far and will ride across the air in the bed. There was a wind tunnel test on this. The air doesn't have to change directions so dramatically. I have not tested this. (in case any police are watching):happy:
    #10
  11. blacksilverado07

    blacksilverado07 New Member

    Joined:
    Jan 16, 2008
    Messages:
    92
    Likes Received:
    0
    its not about the start my truck always takes off faster but somehow he catches up like nothing
    #11
  12. TahoeFever

    TahoeFever New Member

    Joined:
    Sep 18, 2007
    Messages:
    533
    Likes Received:
    4

    Yah no kidding considering you got the famous pull me over red :)
    #12
  13. blacksilverado07

    blacksilverado07 New Member

    Joined:
    Jan 16, 2008
    Messages:
    92
    Likes Received:
    0
    pull me over red?
    #13
  14. sierraman

    sierraman New Member

    Joined:
    Dec 29, 2007
    Messages:
    118
    Likes Received:
    0
    the stepsides are always gonna be a hair quicker because they are lighter
    #14
  15. TahoeFever

    TahoeFever New Member

    Joined:
    Sep 18, 2007
    Messages:
    533
    Likes Received:
    4

    the color red on a truck gives yah a greater chance on saying morning or evenin to the boys in blue ...they like pullin over red vehicles alot more than any other color ... :)
    #15
  16. blacksilverado07

    blacksilverado07 New Member

    Joined:
    Jan 16, 2008
    Messages:
    92
    Likes Received:
    0
    my truck is black though
    #16
  17. Sooner

    Sooner New Member

    Joined:
    Oct 29, 2007
    Messages:
    94
    Likes Received:
    0
    In addition to Mythbusters killing the tailgate down theory (I love Mythbusters), the National Research Council Canada (NRCC) showed that leaving the tailgate down or removed made wind resistance worse (5%) on trucks with the short beds and made little to no difference on trucks with long beds. So, leave the tailgate up and convince your buddy he needs to drop his. Maybe that's the advantage you need. LOL

    http://www.nrc-cnrc.gc.ca/highlights/2007/0705uplands_e.html
    #17
  18. blacksilverado07

    blacksilverado07 New Member

    Joined:
    Jan 16, 2008
    Messages:
    92
    Likes Received:
    0
    but you would think that you would go faster because the wind can escape
    #18
  19. 95CTburb19

    95CTburb19 New Member

    Joined:
    Apr 5, 2007
    Messages:
    1,537
    Likes Received:
    1
    you could have different gears which would explain why you start out quicker but lose in the top end.
    #19
  20. Holy Smoke

    Holy Smoke New Member

    Joined:
    Nov 29, 2007
    Messages:
    284
    Likes Received:
    1
    I like your thinking. :great: Every one should visit the info above. Thank you Sooner !!!

    Black Silverado 07 ,,, I think TahoeFever was talking about my "pull me over red" The police just mail them to me. I do have a I Support Sheriff's Depart. licence plate on front of truck. Helps a little.:neutral:
    Last edited: Jan 18, 2008
    #20

Share This Page