Bad day at the track

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Old 09-20-2006, 11:18 PM
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Default Bad day at the track

Well went out to the track
First run launched at 2500 bogged to about 1000 60 was 2.24 ran a 13.3
Next run launched at 3500 car bogged to 2500 60 was 2.11 went into 3rd and motor just reved couldnt pull the car out of gear so i finally got it out of gear
next run same 3500 launch but didnt bog as bad went a 1.92 60 with and 13.02 at 109
next run lauched at 4500 and BOOOOM broke the posi
mods in sig plus 4.10 gears on stock 10 bolt
Old 09-21-2006, 06:11 AM
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Bummer about the broken parts, but at least she shows potential, and great 60 foot for street tires on a M6. Put a T/A girdle on the rear end, that will help you somewhat.

Derek
Old 09-21-2006, 09:42 AM
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that wasnt on street tires that was on drag radials
so that is why im not to pleased
Old 09-21-2006, 09:41 PM
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this was my time b4 I had heads cam drag radials and 4.10s
now it is running
60' 2.24 1.9
330 5.908 5.5
1/8 8.850 84.38 8.44 at 85
1000 11.338 10.995
1/4 13.444 107.64 13.02 at 108
Old 09-21-2006, 09:43 PM
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Has she been tuned?
Old 09-21-2006, 09:51 PM
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ya tuned at by Mike norris at nlp
from the comparison of time slips it doesnt seem like im making any more power then i did b4
Old 09-27-2006, 05:32 PM
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any ideas on why it is running so bad
Old 09-29-2006, 11:51 AM
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WTF!!!!! I trap, and run dang near the same time as you, and I know you should have alot more horsepower. What is the altitude of the track that you are running at? You might wanna check the density altitude for that day (If it was 100 degrees outside you better bet that you were short some ponies). If you put up your dyno graph mayhaps we can help you figure out where the problem lies. A heads/cam car making over 370whp should definitely be trapping in the 111+mph range.
Old 09-29-2006, 03:25 PM
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Originally Posted by Denom
A heads/cam car making over 370whp should definitely be trapping in the 111+mph range.
I'd hope mid teens, my bolt on A4 car did mid to high 111 trap in almost 3000 DA air. Orlando Speedworld is at 66' above sea level.

Slow00ls1T/a - what kind of #'s did your car put down at NLP? I ran 12.20's last summer at mid 111 MPH, dyno'd 329/341 the following day @ NLP.

With 4.10's, I wouldn't think you'd have problems with it bogging. Something isn't right, and the trap speed is way low.
Old 09-29-2006, 03:39 PM
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are you kidding me? Heads, Cam and tuned and its only going +1mph faster than before? Wow, if I were you heads would be rolling off shoulders. I'm going 11mph faster than that with just a cam and boltons
Old 09-29-2006, 03:45 PM
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Originally Posted by RaNsOm
are you kidding me? Heads, Cam and tuned and its only going +1mph faster than before? Wow, if I were you heads would be rolling off shoulders. I'm going 11mph faster than that with just a cam and boltons
No kidding, through my 10 bolt with intake and headers, I was running 12.4s @ 110mph, after heads and cam with 12 bolt install, 11.7 @ 118 - 119 mph. Something is definitely not right there.
Old 09-29-2006, 03:51 PM
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Dude I could cut a 2.20 with my nittos and mines an A4 so dont worry about it. But your car deff isen't running right
Old 09-29-2006, 08:00 PM
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Here is dyno graph
It was about 80 degrees when i ran it this time
the last time i went out on street tires b4 the DR and 4.10s it went 13.4 at 111 with a 2.3 60
Old 09-30-2006, 01:45 PM
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Originally Posted by Slow00ls1T/a
Here is dyno graph
It was about 80 degrees when i ran it this time
the last time i went out on street tires b4 the DR and 4.10s it went 13.4 at 111 with a 2.3 60
How high do you shift it? It seems like it makes decent power by the graph. Are you still running an unported TB & a stock LS1 intake manifold?

I'm not a fan of aluminum flywheels for drag racing, I prefer a steel flywheel. The extra weight actually helps get you off the line. But, with 4.10's... it shouldn't be a problem.

All I can figure now is the obvious soft launch and maybe you aren't shifting it high enough. :shrug:
Old 09-30-2006, 10:45 PM
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Im still running stock tb and ls1 intake
Im shifting at about 6400
Old 10-01-2006, 06:16 PM
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Originally Posted by Slow00ls1T/a
Im still running stock tb and ls1 intake
Im shifting at about 6400
Are you shifting by the stock tach? If so, I'd get a shif light and experiment with shift points. Also, have you ever tested your fuel pressure to see if it drops off at high RPM's? Just throwing some stuff out there trying to help you find a solution.
Old 10-01-2006, 07:52 PM
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ya going by stock tach
havent tested fuel pressure yet

ya thanks any ideas at this point are better then having no idea



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