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#1 | |
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Jeff, if you were to have, say, a '64 426 Max Wedge. 415 rated NHRA. If you run -1.40 under (9.900 or quicker in A/SA), a combination gets hit 3.25%, or 14 HP, so you're now at 429. You'd have to carry an extra 112 pounds. All 426/415 Max Wedge racers receive this penalty. And yes, it can change the classification of the vehicle. As an example, when the '93-97 GM F-bodies came out, they were rated at 275 and were in, I believe H/SA in 1995. They are now rated over 340 (I forget the actual number) and can run up to B and C/SA. Hope this helps.
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#2 |
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That does make more sense, so it's all about weight. I guess you would have to get creative in how you add that much to the car, since you can only have 100lbs. of ballast. Does 14HP really = 112lbs? That should be about 1/10th of a second too.
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#3 |
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It depends on the class. A/SA is an 8 lbs per cubic inch class, and 14x8= 112 lbs. AA/SA is 7.5 lbs/in and it goes down in half lb increments for the most part.
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#5 | |
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Here is the link: http://www.nhra.com/competition/classification.aspx |
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#7 |
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No, 15.01 is the factor that determines what class your car falls in. Say the rated horsepower was 250 and the shipping weight was 3753, this would give a factor of 15.01. O/SA is the natural class for car with factors of 15.00-15.99. This means that you could in N/SA, O/SA, or P/SA at their appropriate weight breaks. This car would have to weigh (15x250) + 170= 3920 lbs in O/SA. If the horsepower rating were changed to 255, the factor would be 3753 (shipping weight) divided by 255 (the new horsepower rating) which is 14.72. This would make it a natural N/SA car and it could run M/SA through O/SA at the appropriate weights.
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#8 |
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Any car that goes more than -1.40 under the Index, has to add 3.25% to the at-the-time HP rating. Max Wedge 426/415 = 415 x .0325 = 13.4875. All numbers are rounded up, so it's 14 HP, and your car is a now a 426/429.
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Mike Carr, Tri-State S/SS Association President Looking for 2015 S/SS Race Sponsors Contact me if interested buffdaddy_1302@hotmail.com (724) 510-5912 |
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