After reviewing the run data collected during the 2010 season, and consulting with the Sportsman Racer Advisory Council as well as the Stock/Super Stock Committee; the NHRA Technical Department has made changes to the altitude correction factors, for 2011. Below is are the revised factors for altitude corrected NHRA member tracks.
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NHRA ALTITUDE CORRECTION FACTORS
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Stock & Super Stock
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Convert to Sea Level
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Convert to Altitude
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Track Name
|
Alt
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ET
|
MPH
|
ET
|
MPH
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DIVISION 4
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Amarillo, TX
|
3700
|
0.9646
|
1.0337
|
1.0367
|
0.9674
|
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Roswell, NM
|
3700
|
0.9646
|
1.0337
|
1.0367
|
0.9674
|
|
|
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DIVISION 5
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Denver, CO
|
5800
|
0.9405
|
1.0563
|
1.0633
|
0.9467
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Douglas, WY
|
4900
|
0.9508
|
1.0466
|
1.0517
|
0.9555
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Grand Junction, CO
|
4800
|
0.9520
|
1.0455
|
1.0504
|
0.9565
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Great Bend, KS
|
1900
|
0.9853
|
1.0143
|
1.0149
|
0.9859
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Julesburg, CO
|
3500
|
0.9669
|
1.0315
|
1.0342
|
0.9694
|
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Kearney, Neb.
|
2100
|
0.9830
|
1.0165
|
1.0173
|
0.9838
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Pierre, S.D.
|
1700
|
0.9876
|
1.0122
|
1.0126
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0.9880
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Pueblo, CO
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4900
|
0.9508
|
1.0466
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1.0517
|
0.9555
|
|
|
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DIVISION 6
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Acton, MT
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3700
|
0.9646
|
1.0337
|
1.0367
|
0.9674
|
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Anaconda, MT
|
5100
|
0.9485
|
1.0488
|
1.0543
|
0.9535
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Ashcroft, CAN
|
1700
|
0.9876
|
1.0122
|
1.0126
|
0.9880
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Boise, ID
|
2700
|
0.9761
|
1.0229
|
1.0245
|
0.9776
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Lewistown, MT
|
4100
|
0.9600
|
1.0380
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1.0416
|
0.9634
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Medicine Hat, CAN
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2400
|
0.9796
|
1.0197
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1.0209
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0.9807
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Prince George, BC
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2200
|
0.9819
|
1.0175
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1.0185
|
0.9828
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Saskatoon, CAN
|
1600
|
0.9888
|
1.0111
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1.0114
|
0.989
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Spokane, WA.
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2300
|
0.9807
|
1.0186
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1.0197
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0.9817
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|
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DIVISION 7
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Albuquerque
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5400
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0.9451
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1.052
|
1.0581
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0.9506
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Fallon, NV
|
4000
|
0.9612
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1.0369
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1.0404
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0.9644
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Inyokern, CA
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2400
|
0.9796
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1.0197
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1.0209
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0.9807
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Las Vegas, NV
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2100
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0.9830
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1.0165
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1.0173
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0.9838
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Tucson, AZ
|
3000
|
0.9727
|
1.0262
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1.0281
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0.9745
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