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Old 01-06-2014, 11:45 PM   #26
62nalide


 
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So in theory 3.45 gears would be a better ratio for us A6 guys?
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Old 01-07-2014, 09:38 AM   #27
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Originally Posted by 62nalide View Post
So in theory 3.45 gears would be a better ratio for us A6 guys?
Better than stock? From a performance standpoint, yes. 3.73 is even better. But GM had a lot of other considerations when those choices were made. Like the EPA and keeping the L99 and LS3 equipped cars on equal footing.
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Old 01-07-2014, 10:31 AM   #28
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Originally Posted by 62nalide View Post
So in theory 3.45 gears would be a better ratio for us A6 guys?

Ideally, since even with 3.27s, you have to get in 4th gear; youd want a gear/tire combo that would allow you to cross the traps at the top of 4th. Of course you need to know about what trap speed to calculate for and also what rpm you are peaking power at. That's why Ive said for a long time that you need to be able to spin 7000 rpms to consider 3.91s on a cammed auto car. With a 1.15 4th, we need a little less gear because of the aggressive trans gearing.

3.91s are probably too much for a bolt on car, will likely have to hit 5th before the traps, IF the combo is making the power it should be.

Id say 3.45s and a 27" tire, or 3.70s and a 28", or stock gears on a 25.5-26" tire will be about the best gearing for a bolt on car.

Forced induction and nitrous, really you don't need any more gear than a 3.45.

Cammed, Id say most setups will like a 3.91/28" combo, or 3.70 with a 27" tire, or 3.45s with a 26".

Just my .02!

I cross at 126-127 on motor at 6900rpms with converter locked in 4th with 3.91s and a 28" slick.

I have to go into 5th on the spray..... I know I could go 1-2 tenths quicker on spray with a 3.45. But I don't want slow it down on motor!!
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Old 01-08-2014, 06:18 PM   #29
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Oooo sorry didn't catch that! So anyone know what would be some really good suspension mods to help stop the spinning?
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Old 01-10-2014, 01:29 PM   #30
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Bump!
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Old 07-30-2014, 07:37 PM   #31
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INCREASED ACCELERATION
CAMARO 1LE 3.91 GEAR KIT
P/N 22756880 / On-Sale Date: Late Q3 2013/Early Q4 2014


If you want the ultimate acceleration off the line, look no further than this shorter gear ratio. This ring and pinion comes out of the 1LE, and the higher numeric ratio gives your fifth-gen Camaro a dramatic increase in acceleration. The drive gear increases effective rear-wheel torque multiplication by 13 percent in a manual-transmission Camaro SS, and a whopping 20 percent in automatic cars.
The complete 3.91 Performance Gear Kit (P/N 19301504) includes the ring and pinion, all hardware, shims, gaskets, oil additive, and instructions (included, not shown). The 3.91 gear installation requires recalibration, which is installed by a GM dealer. Application for a CARB E.O. has been made at the time of this writing.

http://www.chevrolet.com/performance...3/issue07.html
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