Top Speed - Shooting for 150mph on open road

Discussion in 'Wrenchin' Secrets' started by Phil, Apr 14, 2005.

  1. 70 gsconvt

    70 gsconvt Silver Level contributor

    For those of you that don't know about these races, here is the big one's web site:

    http://www.sscc.us/

    Current record is an average of 207.78 MPH set in 2000 with a, get this, Chrysler LeBaron-style NASCAR race car.

    I was going over the rules myself as I'm contemplating a car for these races and I noticed in the tire section that: "V" rated tires in the GT class are considered a minimum and "Z" rated tires are recommended. I've been looking at doing a 84-87 Regal though as it must have slightly better aerodynamics than the Skylarks form 70-72.
     
  2. 72Skylark350H

    72Skylark350H Old @ Buick,new here

  3. 70 gsconvt

    70 gsconvt Silver Level contributor

    Do a search. This topic has been flogged to death on this board.
     
  4. Gmachine Lark

    Gmachine Lark Well-Known Member

    Phil,
    I have some experience at Bonneville . I am also building a new car for the Maxton monster mile and also for the Salt Flats again. Although we dont make any turns (hopefully) one of the problems is aerodynamics and the other is horsepower.
    The slicker the car is the easier (obviously) to push it through the air. At the salt when a car has reached its aerodynamic limit it will actually go out and spin the tires at speed . Thats why we put weight in the car( over the rear tires) to get them to push through the aero disadvantage. To get a car such as my new one (mid eighties camaro) to go 300mph which is where we are trying to go the car needs to make 15-1600hp and weigh roughly 5500+ lbs.
    The advantage at the salt is the tires run cool. At the Silver State (asphalt) the tires get hot in a hurry. Because of your heavy weight, you would need SERIOUS tires . Street rubber wont get you there . They will chunk and come apart after a few miles. You have to at the least go to a roadrace style tire (shaved tread, little tread etc) or a cup style slick (Talledega tire is the one we use for Maxton).
    On the HP side , you are going to need more of it . With the way a skylark/gs is shaped (windshield is way too steep, nose too flat,bumper slopes way wrong) you will need at least 5-600 hp to do it sustained.Even then handling is going to be interesting . Dont think that becuse they go that fast at the dragstrip the car will hold that speed on the open road.
    Sorry for the ramble . Just keep it super low, more power will get you there , keep coolers on everything and do youself a favor -- at least do a chase truck with a trailer for the drive home .
    my site has some pics of the camaro. they need to be updated but it gives you an idea.
    good luck with it
    George in dc
     
  5. 12lives

    12lives Control the controllable, let the rest go

    Cool George - where is your shop? I might be nearby!

    - Bill
     
  6. Gmachine Lark

    Gmachine Lark Well-Known Member

    I am right in the middle of changing locations.My shop used to be in down by Budds Creek but I am relocating to Malcolm Durhams shop in Hyattsville. Dyno on site , full machine shop etc . I am buddies with his son Brian and helping with thier new pro mod. Should be all moved by the first of next month. My skylark is right in Manassas being painted.
    Contact me off list
    george in DC
     

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