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Flaco's Lil Sis goes 175mph!

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Old 01-22-2013, 11:50 AM
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Originally Posted by Flaco
sorry guys, hadnt posted cause i was out racing this weekend...and not on the computer.............
Old 01-22-2013, 12:02 PM
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Everyone is getting confused because it's a glide. Just because it only has two gears doesn't make it any different in high gear than your 4l60 or 4l80 or th400...still 1:1 ratio.
Old 01-22-2013, 12:03 PM
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Plus it probably has a badass converter that really couples in high gear also that helps with the MPH
Old 01-22-2013, 12:14 PM
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Originally Posted by Flaco
didnt go 160 at 7800.......shut it down early to a 9.2 @ 158 on the next pass ......on a clean run traps 76-7800 or so
Oo ok... If the gearing and rpm was there then there's not a lot to argue with
Old 01-22-2013, 02:38 PM
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Mph in Edinburg raceway is sometimes wrong.
I've traped 166mph on an 11s truck. And some customers have called me to say they traped ridiculous mph. Idk if this was your case, but I do know track mileage is sometimes wrong.
Besides all that.. Truck is Damn fast. Congrats.
Old 01-22-2013, 07:40 PM
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i say they better check there mph clock at that track
Old 01-23-2013, 05:13 PM
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Originally Posted by silver-mod-o
Lol, math is scary
Going off the facts provided by Flaco.

7,600 RPM / 3.42 Rear end gear ratio = 2,222.2222 RPM
29.5 height of rear tire X 3.1415 = 92.6769 Inches per revolution
2,222.2222 X 92.6769 = 205,948.6646 Inches per minute
205,948.6646 / 12(inches in 1 foot) = 17,162.3887 Feet per minute
17,162.3887 / 5,280(feet in 1 mile) = 3.2504 Miles per minute

3.2504 X 60(number of minutes in 1 hour) = 195.024 Miles per hour

That is with 100% converter efficiency.

90% converter efficiency = 175.5216 Miles per hour.

Still a lot of variables unaccounted. Converter efficiency and tire growth is a couple.
Old 01-23-2013, 05:36 PM
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Do you lock your converter, Flaco? You never mentioned what IC you run either...not secret info, is it? lol
Old 01-23-2013, 05:44 PM
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If I was betting, I bet he has a badass protorque or ptc converter in that thing that has less than 5% slip. Just my guess
Old 01-23-2013, 06:31 PM
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I have a gauge for that
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Small question, do you guys define the torque converter slip percent as (engine rpm - trans input)/engine rpm?


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