How do I find out what my differential/final gear ratio is?
02-12-2005, 03:38 PM
#1
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Location: Dallas, Texas
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How do I find out what my differential/final gear ratio is?
I'd like to find out what my '95 Z28 (automatic) has for the final gear ratio. I believe it is also referred to as the differential or the rear-end. Is it in an RPO code on the door?
02-12-2005, 03:46 PM
#2
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Re: How do I find out what my differential/final gear ratio is?
In the glove box. It'll be GU2 or GU5.
GU2 : AXLE REAR, 2.73 RATIO
GU4 : AXLE REAR, 3.08 RATIO (V6)
GU5 : AXLE REAR, 3.23 RATIO
GU6 : AXLE REAR, 3.42 RATIO
GU2 : AXLE REAR, 2.73 RATIO
GU4 : AXLE REAR, 3.08 RATIO (V6)
GU5 : AXLE REAR, 3.23 RATIO
GU6 : AXLE REAR, 3.42 RATIO
02-12-2005, 03:49 PM
#3
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Re: How do I find out what my differential/final gear ratio is?
Alright, thanks a bunch. Can you tell me what the differences between them are? I'm assuming the higher the ratio, the higher the RPMs go before the auto shifts gears.
02-12-2005, 04:03 PM
#4
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Re: How do I find out what my differential/final gear ratio is?
Originally Posted by Brangeta
...I'm assuming the higher the ratio, the higher the RPMs go before the auto shifts gears.
Higher ratios give you more torque multiplication. Changing to a higher ratio will make it feel more responsive, but may not be necessarily faster. You have to take the total package of engine, transmission, suspension, etc. into consideration.
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