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#1 |
![]() Drives: 2012 SS Join Date: Sep 2012
Location: Deale, MD
Posts: 261
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4th gear vs 5th gear on dyno
The shop that tuned my car had to do the pull in 5th because 4th had too much torque for the dyno I was told. What kind of difference does that make in numbers?
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#2 |
![]() Drives: 2010 Camaro SS (RS LS3) Join Date: Dec 2015
Location: Jo
Posts: 302
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I think it's always done on 4th gear pulls.
Think 5th gear pulls will lead to lower numbers. Hope someone can confirm this Sent from my Nexus 6P using Tapatalk |
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#3 |
![]() Drives: 2014 soon to be Copo Join Date: Nov 2015
Location: Ontario
Posts: 41
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You need to do your dyno pulls in what ever gear is a 1-1 Ratio in most Standard transmissin cars it's 4 and most autos it's 3rd
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#4 | |
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2012 RS 2ss
Drives: 2018 ZL1 2012 2SS WhippleCharged Join Date: Feb 2012
Location: Kansas
Posts: 414
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Quote:
1st Gear Ratio 4.027 2nd Gear Ratio 2.364 3rd Gear Ratio 1.532 4th Gear Ratio 1.152 5th Gear Ratio 0.852 6th Gear Ratio 0.667 Reverse 3.064 My Tuner used 4th
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#5 |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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Typically numbers will be a bit lower.
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Nick
Corvette Z06 -1200ish rwhp |
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#6 |
![]() Drives: 2012 SS Join Date: Sep 2012
Location: Deale, MD
Posts: 261
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Thanks guys. Any one smart enough how to calculate the difference?
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#7 |
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drinks virgil's
Drives: 2010 2SS M6 Join Date: Feb 2014
Location: Missouri
Posts: 448
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Take the results and multiply by .852 for a ballpark.
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2010 2SS/RS M6 - CAI Intake - Borla Stinger - VTC - 3.91's
Eibach Sways - LG ZR28's - BMR Springs - 285/35 Squared |
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#8 | |
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Captain Gingerbeard
Drives: 2012 IOM RS/SS 6MT Join Date: Mar 2013
Location: West Twin Cities, MN
Posts: 2,489
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My tuner always tries to use the gear closest to 1:1 for dyno pulls. So 4th gear for mine.
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Custom ordered 2012 6MT RS/SS on 11/25/2011. Picked up 01/31/12.
Pedders Coilovers, BMR trailing arms and toe-links, Prothane solid poly subframe bushings, JDP Motorsports rear upper control arm bushings, Texas Speed long-tube headers with 2" primaries, modified fully 3" Magnaflow competition catback. CAI cold-air intake. DBA rotors, Hawk pads. Quote:
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#9 |
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That's interesting to know. My car was dyno'd in 5th gear. Makes me feel better about my number after recalculating based on the gear ratios.
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#10 |
![]() Drives: 2012 SS Join Date: Sep 2012
Location: Deale, MD
Posts: 261
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#11 |
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SS
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so if a 3.91 swap 5th would be a .96276 ratio at 13% increase I am thinking
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CCW sp16a track set, BTR stage 3 cam and kooks longtubes with high flow cats
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#12 |
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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Rear end gear doesn't effect transmission ratios.
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Nick
Corvette Z06 -1200ish rwhp |
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#13 |
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drinks virgil's
Drives: 2010 2SS M6 Join Date: Feb 2014
Location: Missouri
Posts: 448
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No, I know. I was being sarcastic. My apologies....
Although thinking about it, what all mods do you have done to the car?
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2010 2SS/RS M6 - CAI Intake - Borla Stinger - VTC - 3.91's
Eibach Sways - LG ZR28's - BMR Springs - 285/35 Squared |
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#14 |
![]() Drives: 2012 SS Join Date: Sep 2012
Location: Deale, MD
Posts: 261
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Agp #12.5 cam meth
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