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Thread: hardtail help needed

  1. #1
    Junior Member APPRENTICE
    Join Date
    Jun 2003
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    Gainesville, VA
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    17

    hardtail help needed

    Am running a 496 chevy in a 225 hardtail. Glide with 5600 stall 4.30 gear, new Hoosier 33.5X17X16. on poor tracks 60 ft is 1.17. went 1.14 today, ran 7.95 @ 166.78 on last pass. Running tires at 5.6 psi. any thoughts on launch RPM or tire pressure? 60 ft is the same leaving at 3500 or 4100. thanks much

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
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    2,998
    sometimes hardtail cars need to hit the tire harder, try 4400ish. Them tires co6's or co7's ?

    What are you looking for, more consistent 60ft from good to bad track ? Your converter is tighter then most so its going to affect 60ft a bit more then a looser converter would do.
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  3. #3
    Junior Member APPRENTICE
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    Jun 2003
    Location
    Gainesville, VA
    Posts
    17

    dragster help needed

    looking to keep consistent 60' and pick up a bit of ET. i am thinking of a looser converter as well. the tires are CO6 Hoosier. any thoughts on this range of 60 ft times? I ahve only made 60 passes in this car.

    thanks
    TA

  4. #4
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
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    2,998
    was it the same track or a different track ?

    My car is what Id call "stupid good" most the time, last weekend at one track it was 1.098-1.101 all day, yesterday at a different track, 1.028-1.036 ... only difference is one tracks 60ft cones are off.

    Even on the same track day to day, as long as its consistent all day on that day I wouldnt worry a bunch, but if it starts moving around a lot Id start to worry.


    Loose converters are deadly IMO but normally not fast.


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