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post #1 of 4 Old 07-09-2010, 12:55 PM Thread Starter
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Gears and track times

How will changing the rear axle ratio on a 2010 Camaro SS affect your 1/4 mile times?

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post #2 of 4 Old 07-09-2010, 02:32 PM
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Depending on the gear, it can move the useable hp to better rpm range for the track.

It typically give you better off the line kick, but too much gear can make the car "use" up all of the power before it gets to the end of the track.

I have always been taught that you want to shift right into forth(or the 1:1 gear) before the end of the track. This is a guide and not an absolute and it all depends on where your hp's powerband falls rpm wise.

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post #3 of 4 Old 07-09-2010, 02:42 PM
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Quote:
Originally Posted by 54inches View Post
Depending on the gear, it can move the useable hp to better rpm range for the track.

It typically give you better off the line kick, but too much gear can make the car "use" up all of the power before it gets to the end of the track.

I have always been taught that you want to shift right into forth(or the 1:1 gear) before the end of the track. This is a guide and not an absolute and it all depends on where your hp's powerband falls rpm wise.
That's a good rule of thumb, I've sat towards the finish line for numerous drag races and typically the consistent bracket racers are shifting into the final gear just prior the 1000' mark. That does vary though, everyone has their own set up.

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post #4 of 4 Old 07-09-2010, 02:43 PM
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Very true, it just depends on the tranny and gear selection. Like I said, just a guide.

Don't want to be shifting into your final at the 1/8.

2005 CTSV BLACK LS7 Clutch/Flywheel/Slave, Tick Speed Bleeder, Tilton Clutch MC, RevShift Bushings, Domestic V8 Solutions (shifter, 8.8 Diff conversion, srut tower braces, sub-frame connectors), SLP cats, no cags, xpipe, bullet mufflers, Volante, iPod dock, G-force tune; 379hp 381tq.

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