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1/8 MPH 93.03 and 1/4 MPH 115.97, is this normal

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Old 10-06-2007, 06:13 PM
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Default 1/8 MPH 93.03 and 1/4 MPH 115.97, is this normal

I ran the time in my sig a few weeks ago and since then, I've seen some other peoples times that are similar to mine. It seems to me that my 1/4 trap speed should be a little higher considering my 1/8 trap speed of 93 MPH. What do you think?

60'- 1.757
1/8 ET- 7.534
1/8 MPH- 93.03
1/4 ET- 11.768
1/4 MPH- 115.97
Old 10-06-2007, 06:16 PM
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ahh id say its close....how are the shifts setup?????
mine trapped 92 1/8 and 117 1/4 but I was having shift problems it sat on the limiter on both shifts.....
Old 10-06-2007, 06:26 PM
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Shifts are at 6400 and are very firm and quick.
Old 10-07-2007, 04:31 PM
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With 3.23 gears and a 1.7x 60ft., it seems to me you should be trapping higher.
Old 10-07-2007, 04:53 PM
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I bet your trans is starting to slip.
Old 10-07-2007, 06:17 PM
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Originally Posted by Asmodeus
I bet your trans is starting to slip.
Trans shift better than ever. Just got a performance rebuild a couple months ago. I've went through a few 4L60Es in the past and know that this one is running very well.
Old 10-07-2007, 06:18 PM
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Originally Posted by JEB99TA
With 3.23 gears and a 1.7x 60ft., it seems to me you should be trapping higher.
We're making close to the same power, what times and trap speed do you run?
Old 10-10-2007, 06:24 PM
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Originally Posted by JEB99TA
With 3.23 gears and a 1.7x 60ft., it seems to me you should be trapping higher.
I agree! i run the same exact mph with 50 less hp and a 389 gear. I would try a 373, bet it will make a big difference for him, especially in the 60ft.
Old 10-10-2007, 06:35 PM
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Originally Posted by 1BAD98LS1
I agree! i run the same exact mph with 50 less hp and a 389 gear. I would try a 373, bet it will make a big difference for him, especially in the 60ft.
You also have a PT4000 converter. I willing to bet your car is pretty light too.
Old 10-10-2007, 09:07 PM
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Originally Posted by gruntwork
I ran the time in my sig a few weeks ago and since then, I've seen some other peoples times that are similar to mine. It seems to me that my 1/4 trap speed should be a little higher considering my 1/8 trap speed of 93 MPH. What do you think?

60'- 1.757
1/8 ET- 7.534
1/8 MPH- 93.03
1/4 ET- 11.768
1/4 MPH- 115.97
That is close I have a ticket from my stock block V6 laying here

60' 1.623
1/8 ET- 7.093
1/8 MPH 96.41
1/4 ET- 11.189
1/4 MPH- 119.22
Old 10-10-2007, 10:02 PM
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it is n/a correct? sounds about right. my car stock with a kit trapped 93-118.
Old 10-11-2007, 10:37 AM
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Thanks for the replies fellas.

Any all motor A4's please chime in.
Old 10-11-2007, 05:08 PM
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Originally Posted by gruntwork
You also have a PT4000 converter. I willing to bet your car is pretty light too.
You also have heads/cam where as im stock internal, that makes a huge difference. and yea being as i have a 4k stall my mph would be slower due to slippage up top, but i like the 1.47 60's
Old 10-11-2007, 06:27 PM
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Right where you should be. I ran a 11.74@114,....1/8th was 91.8mph,.....my 60' was a 1.56,...so im a bit ahead of ya there. No need for panic though,...nothings wrong with your pass or mph's
Old 10-11-2007, 07:41 PM
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Originally Posted by 1BAD98LS1
You also have heads/cam where as im stock internal, that makes a huge difference. and yea being as i have a 4k stall my mph would be slower due to slippage up top, but i like the 1.47 60's
Yank PT are quite efficient actually. Cars with converters like that are usually making great MPH due to the shift extension. H/C cars usually have High RPM biased power curves compared to stock internal cars making them pull harder on the big end. Big stalls=big MPH
Old 10-11-2007, 07:43 PM
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Originally Posted by 98REDZ
Right where you should be. I ran a 11.74@114,....1/8th was 91.8mph,.....my 60' was a 1.56,...so im a bit ahead of ya there. No need for panic though,...nothings wrong with your pass or mph's
Thanks, I guess for my setup its about right.
Old 10-15-2007, 04:56 PM
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Originally Posted by gruntwork
Yank PT are quite efficient actually. Cars with converters like that are usually making great MPH due to the shift extension. H/C cars usually have High RPM biased power curves compared to stock internal cars making them pull harder on the big end. Big stalls=big MPH
Well from what ive experienced from my car, it dont pull much up top but comes out the hole like hell. theres always pros and cons, but yank has a great convertor and i wouldnt justify using any other.
Old 10-15-2007, 05:59 PM
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Well, if there is something wrong, I suffer from the same issue.

I've been running 11.90-12.00@113-114.

Right at 410 HP through a Yank SS3600. Sounds to me like it is pretty normal.
Old 10-16-2007, 04:10 PM
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^ Same here.. 11.86 @ 114.26, 1.64 60'. Tsp tv2 w/5.3s, 3.73s, 3400 stall. Full weight at 3650 lbs. I think my stall is hurting me, so i'm swapping the tci 3800+ back in soon.

Gruntwork, I think your numbers are fine. Your 1/4 mph is around 20% more than your 1/8 mph, but your 60' should be a tad lower (1.6s low 1.7s). Track prep, weather, suspension all plays a part in that though..
Old 10-16-2007, 09:23 PM
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Originally Posted by shortdog
^ Same here.. 11.86 @ 114.26, 1.64 60'. Tsp tv2 w/5.3s, 3.73s, 3400 stall. Full weight at 3650 lbs. I think my stall is hurting me, so i'm swapping the tci 3800+ back in soon.

Gruntwork, I think your numbers are fine. Your 1/4 mph is around 20% more than your 1/8 mph, but your 60' should be a tad lower (1.6s low 1.7s). Track prep, weather, suspension all plays a part in that though..
Yeah, I'm pretty sure that the car has a lot left in it. I wanna nail a 1.6 and see what the car will run. Hopefully 11.50's


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