adrynalinjunkie

iTrader: (4)

I run at 3 different tracks. Spokane is 1909 feet and my home track of yakima is 980 feet and then portland is 29 feet. If I ran a 11.5 at 2000 feet what would it equal at 1000 feet?

Where can I read on this DA stuff in simple gear head language?

Nitroused383

iTrader: (10)

Here are the altitude correction factors NHRA uses, Spokane is 2300' elevation. http://www.nhra.com/competition/altitude.aspx

This is also a good site for density altitude http://www.dragtimes.com/da-density-...calculator.php

Also one of our friends car used to run 11.7x @ 114-115 in Spokane. He recently sold the car and the guy ran it at Woodburn. No changes at all except the track and it ran 11.33@119

mrdragster1970

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There is huge differences in just changing DA's.
As mentioned, several .10's especially with swings of 1000, 2000, 3000'

I have a weather station but I still use the 2nd link from drag times, just to double check.

.

MIKE93SVT

iTrader: (6)

in colorado the elevation is 6,300ft. lucky if the da is below that and it pulls a full second off et's. that's on a nice day

joblo1978

iTrader: (14)

Yup, I have over 500 SAE corrected RWHP and still haven't gotten into the 11's. It's hard up here.