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NHRA Stock & Super Stock Altitude Correction Factors |
Marka Gallina -FastBuicks@aol.com
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To convert your Quarter Mile ET and MPH to sea level times, multiply applicable factor times your ET or MPH.
Altitude above Sea Level (in feet) | Elapsed Time Factor | MPH Factor |
1200 | .9874 | 1.0129 |
1300 | .9861 | 1.0143 |
1400 | .9848 | 1.0157 |
1500 | .9835 | 1.0171 |
1600 | .9822 | 1.0185 |
1700 | .9809 | 1.0199 |
1800 | .9796 | 1.0213 |
1900 | .9783 | 1.0227 |
2000 | .9770 | 1.0241 |
2100 | .9757 | 1.0255 |
2200 | .9744 | 1.0269 |
2300 | .9731 | 1.0283 |
2400 | .9718 | 1.0297 |
2500 | .9705 | 1.0311 |
2600 | .9692 | 1.0325 |
2700 | .9679 | 1.0339 |
2800 | .9666 | 1.0353 |
2900 | .9653 | 1.0367 |
3000 | .9640 | 1.0381 |
3100 | .9627 | 1.0395 |
3200 | .9614 | 1.0409 |
3300 | .9601 | 1.0423 |
3400 | .9588 | 1.0437 |
3500 | .9575 | 1.0451 |
3600 | .9562 | 1.0465 |
3700 | .9549 | 1.0479 |
3800 | .9536 | 1.0493 |
3900 | .9523 | 1.0507 |
4000 | .9510 | 1.0521 |
4100 | .9497 | 1.0535 |
4200 | .9484 | 1.0549 |
4300 | .9471 | 1.0563 |
4400 | .9458 | 1.0577 |
4500 | .9445 | 1.0591 |
4600 | .9432 | 1.0605 |
4700 | .9419 | 1.0619 |
4800 | .9406 | 1.0633 |
4900 | .9393 | 1.0647 |
5000 | .9380 | 1.0661 |
5100 | .9367 | 1.0675 |
5200 | .9354 | 1.0689 |
5300 | .9341 | 1.0703 |
5400 | .9328 | 1.0717 |
5500 | .9315 | 1.0731 |
Table courtesy of Marka Gallina
Last updated: