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Speed in Gears


This is a discussion on Speed in Gears within the Performance Mods forums, part of the Viper Truck SRT-10 Discussion category!
Well, I know that my last run at the Maxton Mile was 155MPH in 5th with my 4.56 rear gear, ...



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Old 12-16-2007, 07:54 PM
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Well, I know that my last run at the Maxton Mile was 155MPH in 5th with my 4.56 rear gear, and I was very close to redline, so I am hoping that your figures are correct, cause I'm going to order the 4.88 gear Monday morning and see what happens after Christmas on the test track. Cause in April, I'm going for that 167MPH National Record. Thanks for the info.

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Old 12-16-2007, 09:03 PM
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Do not go with 4.88's, use a 4.11 gear and you will see approx. 170MPH at 5500RPM assuming stock transmission ratios and stock height tire (approx. 31.5). You will never pull 6th gear to 170MPH in a reasonably stock powered truck with 4.88's (only 4400 RPM).
Justin
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Old 12-16-2007, 09:57 PM
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I,m sure I see aprox. 80 MPH at the top of second,will have to double check when I can! I,ve hit 160 plus (not stock,4.56s) in 5th and sixth,I believe That I can hit 175 .I also believe that an excess of 1,000 H.P. Minimum would be needed to hit 200 M.P.H. to overcome the wind resistenceThey should of put 200 M.P.H. speedos in these trucks.
By the way,I,ve also checked a few trucks speedos on a dyno and found them to be accurate to aprox. 150 mph(could not go higher).I can,t wait to see some good calculations!!!
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Old 12-16-2007, 11:13 PM
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Justin,

Are you assumeing the top speed at 5500RPM in 5th gear? I don't see 6th gear working in this setup. I'm running stock size rear tires and the motor is just a bit warmed up.
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Old 12-16-2007, 11:49 PM
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Yes 5th gear, sorry for not being more clear. Best of luck to you!
Justin
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www.jmbperformance.com

We Build Worlds Highest HP SRT-10 Rams and more:
-Dom's Twin Turbo, Baddest Ram SRT-10. 7.97/183 and just getting started...
-Eric's SC F1X: 1077whp race/967whp pump
-RamfromHell's SC F2: 921whp pump
-700hpOdyssey's SC F1C: 950whp pump
-Braedon's SC F1C serpentine: 831whp 91 octane
-Anthony's SC F1C Serpentine low boost 786whp pump
-John's SC QC F1C Stock Longblock 626whp pump
-JMB's N20: 640whp pump (Fastest/Quickest stock motor/weight N20 only 11.30/119.7)
-Kurt's NA Cam/Bolt-ons Viper: 543whp/540wtq SAE
-James NA Cam/Bolt-ons Viper: 544whp/553wtq SAE
-Mikes TT 06 Viper: 1200+whp, 187mph Standing 1/2 mile
-Doms 98 JMB Procharged Viper: 869whp/859wtq pump
-Garys 04 SRT4: 640whp
-Kyles 05 SRT4: 571whp on 24 psi/91 octane
-Michaels 05 SRT4: 580whp on pump
-Logans 05 SRT4: 724whp on E85


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Old 01-05-2008, 10:55 PM
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sorry to have shot my mouth off. these are, by the numbers, 200+m.p.h. trucks . plugged in wrong numbers. i got:

1st-45@6,000
2nd-69@6,000
3rd-95@6,000
4th-123@6,000
5th-167@6,000
6th-247@6,000
rev.-176@6,000???
stock set up
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Old 02-03-2008, 02:56 AM
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For those of you that are curious, the gear ratios in the '06 QC automatic are:


1st-------2.45
2nd-------1.45
3rd-------1.0
4th-------0.69
R---------2.20
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Old 02-07-2008, 05:26 PM
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Quote:
Originally Posted by WOT
For those of you that are curious, the gear ratios in the '06 QC automatic are:


1st-------2.45
2nd-------1.45
3rd-------1.0
4th-------0.69
R---------2.20
1st = 50mph
2nd = 85
3rd = 124
4th = 164 @ 5500 rpm
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Old 03-24-2008, 07:25 PM
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Well, we'll know after next weekend what the speeds are in 5th at 6000 RPM if it holds to form and I hit Redline at one mile. Hope its over 164MPH!
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Old 03-24-2008, 07:34 PM
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Quote:
Originally Posted by BIG NANA
Well, we'll know after next weekend what the speeds are in 5th at 6000 RPM if it holds to form and I hit Redline at one mile. Hope its over 164MPH!
good luck BN
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