Great story with a great timeslip. Once again I missed the prediction - spending too much time Gonkulating NHRA history on HAMB.
So many Mouse combinations, all the NHRA nationals ended up infested with rodents.
First I had to hunt for the engine link, I forgot all about having already read it. Too much going on.
http://fepower.net/simplemachinesforum/index.php?topic=7119.0;allOn your 1st runs (July 27) the comment about the car laying down seems just right per the Gonkulator - good 60ft, good 1/8 MPH, slow 1/8 ET.
Gonkulator said about 7.10 ET. I used an extra full second on the 1-2 shift and that brought things in line, likely not what really happened but somewhere around the 1-2 shift the car fell asleep and then woke up again.
I calculated a DA=2643 ft on your July 27 runs, or about 95% power vs the typical weather I assume in the Gonkulator.
On your next runs (Aug 10) I had to have everything about "right on" in the Gonkulator and then things lined up pretty good:
1.48
4.41
6.89 at 98.6
10.88 at 122.97 (or 123.89mph measured the "old way").
I get a DA=2046 ft for that day, or abou 97% power vs a typical Gonkulator run.
SAE Gross Sea Level Air (ok stop laughing everybody) is about 4% better than what I use for Gonkulator air or about 7% better than the air you had. Here is what the Gonkulator gets for your car on an SAE Day if you can ever find one:
1.46
4.32
6.75 at 100.6
10.66 at 125.4 (or 126.4 out the back door)
A Magazine-Worthy story for sure.
NOTE: "Gonkulator Air" as I normally use is my guess for my 1st trip to Milan back in 1975:
64 F
50% RH
29.92 Barometer
500 ft elevation
1000 ft DA
100% Power (I like to think of air in terms of %Power instead of DA, so an SAE Day is 104% Power, Jim's day above is 97% Power, etc. Since 3% power is about 1% trap speed, it makes the conversions pretty easy.)
Funny I remember that 1st trip to Milan like yesterday, a little chilly crawling under the car on the entry road in the morning to unbolt the headers, cold enough my girlfriend stayed in the car to keep warm and fell asleep (she woke up in a hurry). Nice day later on, I didn't get hot so I know it was in the 60s.
About the best Michigan Summer race weather you could hope for.
So when I give a generic "gonkulator result" unless I know the track & weather, that's what I'm using.