Demon top speed?

Discussion in 'Dodge Demon General Discussion' started by GoodCaptain, Apr 11, 2017.

  1. GoodCaptain

    GoodCaptain BANNED

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    Any ideas?




    Robert
     
  2. Steven_sbs

    Steven_sbs Browncoats Unite Gold Supporting Member

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    Tires are rated for 168 mph. Go read the other Demon threads.
     
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  3. bolivarshagnasty

    bolivarshagnasty Gold Member

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    Wouldn't be a good idea to go 180+ with front runners. I would want speed rated tires on all four corners. No reason it shouldn't exceed 200 easily.
     
  4. GoodCaptain

    GoodCaptain BANNED

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    Yeah, but what's the top speed on regular tires?


    R.
     
  5. Slowpoke387

    Slowpoke387 Gold Member

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    Its a drag car. Kind of irrelevant really. Thought i heard 160 something though.
     
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  6. cleankat

    cleankat SRT Hellcat Supporter Gold Supporting Member

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    Gearing....
     
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  7. bolivarshagnasty

    bolivarshagnasty Gold Member

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    Yeah, it probably is geared pretty low. Didn't think about that.
     
  8. MABBRYFL30

    MABBRYFL30 NYS President Hellcat Car Club Gold Supporting Member

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    IMG_5277.JPG 200
     
  9. 762CAT

    762CAT Gold Member

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    Nailed it....3.09s top out at 165.8mph in 6th gear then you are in 7th until 197mph assuming you make that far being 6th is the one to one gear. That is why I am keeping the 2.62s in my car.

    EDIT that is on hellcat 275 tires. I suspect the 315 height is very similar though.
     
  10. pinetreecat

    pinetreecat Gold Member

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    I went 177 in the standing mi with 707 in 6th....

    840hp in 7th with the 309 should go 190s in the mile with the proper speed rated tires.
     
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  11. 762CAT

    762CAT Gold Member

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    with 2.62s car shifts to 7th at 195mph....I know this from the charts and personal experience based on equipment external to the car so no speedo error from tire growth. Horsepower will not change this....this being shift points. Now will more HP still pull past 7th gear??? I don't know but I don't think so. I think it will just get you there faster. I'm keeping the 2.62s for the next Kennedy Space Center run in the fall but the HP is going way up. It should be interesting.

    Table for 2.62s.


    1st -- 4.714 x 2.62 = 12.351 ( x 336 = 4,149 ) = 41.5 MPH @ 6000 -- 42.8 MPH @ 6200
    2nd -- 3.143 x 2.62 = 8.235 ( x 336 = 2,766 ) = 62.3 MPH @ 6000 -- 64.3 MPH @ 6200
    3rd -- 2.106 x 2.62 = 5.518 ( x 336 = 1,854 ) = 92.9 MPH @ 6000 -- 95.9 MPH @ 6200
    4th -- 1.667 x 2.62 = 4.368 ( x 336 = 1,467 ) = 117.3 MPH @ 6000 -- 121.29 MPH @ 6200
    5th -- 1.285 x 2.62 = 3.367 ( x 336 = 1,131 ) = 152.2 MPH @ 6000 -- 157.32 MPH @ 6200
    6th -- 1.000 x 2.62 = 2.620 ( x 336 = 880 ) = 195.6 MPH @ 6000 -- 202.20 MPH @ 6200
    7th -- 0.839 x 2.62 = 2.198 ( x 336 = 738 ) = 233.3 MPH @ 6000 -- 241.11 MPH @ 6200 ( we're past the aero limit here )
    Then we enter driving in a vacuum land :)
    8th -- 0.667 x 2.62 = 1.748 ( x 336 = 587 ) = 293.3 MPH @ 6000 -- 303.13MPH @ 6200
     
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  12. 762CAT

    762CAT Gold Member

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    TCM tuning becomes very interesting for high speed events in stock HP cars....or even cars with more power. Imagine staying in 6th gear (2.62s) at 6500 RPM...... Well over 200mph.
     
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  13. PlumTexasCrazy

    PlumTexasCrazy HELLCAT LIFE MEMBER Hellcat Car Club HCC Charter Member

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    U will top out in the 190ish with the 3.09's because u have the tires rated for that speed!!
     
  14. GoodCaptain

    GoodCaptain BANNED

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    So the Charger Hellcat remains the top speed champ and the Challenger Hellcat may also be faster than its Demon cousin.

    The Demon will be quicker of course, but not faster...unless the Charger Demon comes to be and takes things in a different direction.


    R.
     
  15. pinetreecat

    pinetreecat Gold Member

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    Well that's 3 minutes of wasted reading I can't get back......
     
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