thewinner

I finally figured out the correct density altitude and now am able to correct my times I ran on wednesday. http://www.stangbangerz.com/modules....h&file=density

I took 3 out of my 9 runs and converted them over:

Best MPH given the conditions:

14.261@103.54
60': 2.403
Temp: 86
Absolute barometer: 23.38
Humidity: 40%
Elevation: 0 (already factored into the barometer)

Corrects to 11.95@120.29

Overall Best MPH:

14.325@104.21
60': 2.545
temp: 76
Barometer: 23.41
Humidity: 40%
Elevation: 0

12.23@119.48

Overall Best ET:

14.117@103.32
60': 2.293
Temp: 82
Barometer: 23.38
Humidity: 40%
Elevation: 0

11.92@119.44


Obviously traction is a major problem here with a 383 on street tires. I think the car as is, with some more pcm tuning and a little weight reduction, with 1.7 or 1.8 60' will go 12.7-12.8 up here:

12.8@103.54 with the same conditions as the first run listed = a 10.73@120.29


atljar recommended this calculator, and says:

"Ive always had very good consistent reults with it, and they seem to be pretty good to real world. I can go out and run 14 flat at 1000 DA, corrected to lets say 13.5.

Go out on a 0 DA day, and i run that 13.5."

Let me know what you guys think! I think something might be off, but ya never know.

I think i might have to take a road trip down to phoenix after i can get some drivetrain mods so i can see what it will run down near sea level at speedworld. It seems to be the closest track that is decently low elevation.

PS: If you are just gonna be stupid and say the car is slow b/c it ran 14s on street tires at 10k DA, then dont post.

1994CamaroZ28

Good times, People dont realize how much altitude actually affects 1/4 times. i live in oklahoma and dont have that problem but if you made it to a diffrent track away from where you are for sure with a little cooler tempature id like to hear what youd run.

thewinner

Thanks man, where in OK are you? north west? I hope i can find a track closer.

http://nhra.com/tracks/division_5.html probably ill check out one of those, see what they have as far as elevation goes.

Anyone know of the elevations of these tracks:

http://www.krpi.com/
http://www.nemotorplex.com/
http://www.roswelldragway.com/

1994CamaroZ28

whenever i go to the track i go to kansas http://www.midamericadragway.net/

thewinner

ya, im not sure i want to drive that far to race, and then if it got rained out or something, that would be ****ty.

If anything i would probably go to phoenix since i have relatives down there.

1994CamaroZ28

Sounds good, i dont like to drive far either pushing 160k miles pretty much stock with basic mods exhaust etc, maybe its time i start saving up for a 383 or a 396.
Good luck and keep us updated.

wantafastz28

All i gotta say is your car is slow, and I'll whoop you any day of the week with my stock *** camaro. You cant drive, thats the reason for your ****ty times. Put a real driver in the seat like me and I'll show ya how it's done.

thewinner

bitch.

I will own you if i come down there.

wantafastz28

J/k man, i think those times are a little optimistic, but i do see ya getting some 11's with some good traction. I'll meet up with ya if you come down to speedworld and see what happens.

thewinner

So ya think she'll go low 11s with traction?

Doh, just remembered why altitude kicks ***. The factor of not having to replace parts as many times. If i go down to sea level, i'll be having to change injectors, up here my stockers are only at 80% DC

atljar

I think the trap speeds will come down a little once the car hooks well (i know they will, which is something the calculator doesnt have control over). But if you pull those types of 60's on a different track, i am willing to be that the calculator is fairly close. A 383 should have no problems with high 11s like that correction factor gives, but i am thinking you will be a little faster than that once it hooks at sea level.

Congrats bro and glad you finally got the whole DA thing figured out.

thewinner

so you think if i can get in the 12s up here at those conditions, at sea level it should be good for 10s?

cause the calculator was converting those horrible 60' runs into high 11s.

I wish i lived at sea level to see what she can do since the correction factors arent dead nuts accurate. Id love to take it down, but i cant justify price after remembering that it will need a new tune, bigger injectors, and some more **** that is unneeded up here. Some day when i have money and my drivetrain is complete or if i come across a cheap set of injectors, maybe....

Realistically, what kind of 60' times do you think i can get on drag radials with m6 and 3.42s?

atljar

M6 with 342 gears and drag radial = NIGHTMARE launches. Get some gear and some real tires and 1.8s should be cake. If you can pull a 1.8 now, i would be very happy.


Also remember the correction factors isnt just for altitude, but also temperature and humidity. I can count on one hand the number of times we have had a DA of under 500 feet here in cincy. So even if you go low elevation, you will still likely have a DA of 1000+ feet. Those corrected numbers are in PERFECT weather conditions.

Even still, your corrected trap speed numbers (which i already mentioned) are skewed b/c of the spinning launch. I would say if you hook, and you are running at a good DA, you are looking at 11.50s at best.

Cmr0z28

atljar

thewinner

Ya, im not really putting any money into the 10 bolt, rather saving money for a 12bolt and dealing with what i have. But soon i am going to get a strange, cause i can get some good deals on new ones. Planning on 4.11s and ET streets, what size ET streets will fit 16" wheels? or do they only have one 16" size? Wonder what the gears will do to my shifting, since im going through the finish at the top of 3rd gear?

But, if i find a place with a close to zero DA it theoretically should run 10s?

You say mph is skewed b/c of spinning launch, should it be higher or lower?