Our track opens in April, i haven't touched the Z since i ran 13.4 @ 104.85 mph. Our track is roughly 900 ft above sea level. How do I find out what my e.t. would be at sea level?

Zach

 

To get an accurate result you need a few numbers at the time of the run.

Track altitude
Air temperature
Humidity
Barometric pressure
ET/MPH
Vehicle race weight (car, driver, fuel, etc) - required to calculate hp

From all those, a density altitude can be calculated. With a DA, the ET and MPH can be calculated to a sea level performance result. That's the same thing a dyno will tell you.

If you just go by the track altitude you can be a couple of thousand feet off depending on the weather conditions. Our local tracks altitude is a little under 3500 feet but a typical race day, the DA hovers around 5000 feet and has been as high as 7000 feet in very hot, muggy conditions with a low barometric pressure.

You get me all the info and I'll tell you what you could run at sea level. Sea level also doesn't mean you'll actually run that number since weather conditions will always change the DA but it gives a comparrison against any other car's "sea level" performance. Mission BC is at 24 feet above sea level. In the early spring, weather conditions are so good that they actually race in air that's considered below sea level so the cars run extremely fast.