Camaro rear axle vs Corvette, 6 speed auto - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

patengine · 03-22-2014, 02:38 PM

Hi guys,
I was looking at the gear ratios of the automatic camaro and corvette and noticed while their gear ratios are identical since both use the 6l80e transmission, their rear axle ratios are different.
The camaro has a 3.27 while the corvette has a 2.56 or option 2.73.
I know the camaro is about 500 lbs heavier than the corvette, but doesn't that significantly shorter rear end gearing make the camaro have a lot more punch at low speeds?

SS376 · 03-22-2014, 04:39 PM

Corvette rear tires have around a 2 inch smaller diameter than Camaro SS rear tires. Between 26.5 and 27 depending on the model for the Vette, vs almost 29 for the Camaro.

E.T. · 03-22-2014, 04:50 PM

I wonder if the 2.56 gear in the 'vette at least equivalent to the 3.27 in the Camaro? I know changing tire diameter will make a car behave as if it had a different gear ratio, but I don't know to convert.

Personally, I think the Camaro is under-geared for being how heavy it is. 3.70's do wonders for the auto.

3rdgen3 · 03-22-2014, 04:55 PM

Quote:

Originally Posted by E.T.

I wonder if the 2.56 gear in the 'vette at least equivalent to the 3.27 in the Camaro? I know changing tire diameter will make a car behave as if it had a different gear ratio, but I don't know to convert.

Personally, I think the Camaro is under-geared for being how heavy it is. 3.70's do wonders for the auto.

Its very close. And this is exactly why the rear end ratios are so much lower on the vette to account for the change. Also since the vette is lighter then the camaro and combined with the longer ratio the vette gets much better MPG then the camaro, say LS3 C6 vs LS3 or L99 Camaro.

SS376 · 03-22-2014, 05:00 PM

Quote:

Originally Posted by E.T.

I wonder if the 2.56 gear in the 'vette at least equivalent to the 3.27 in the Camaro? I know changing tire diameter will make a car behave as if it had a different gear ratio, but I don't know to convert.

Personally, I think the Camaro is under-geared for being how heavy it is. 3.70's do wonders for the auto.

I think the Camaro still has an effectively lower ratio, even with the taller tires. So the Corvette's weight advantage is obviously key.

TxBandit911 · 03-22-2014, 05:09 PM

Um...you guys realize that 2.56 is a HIGHER ratio than 3.27, right? Also, I haven't looked but do both versions of the 6l80e have same internal gear ratios?

SS376 · 03-22-2014, 05:34 PM

Quote:

Originally Posted by TxBandit911

Um...you guys realize that 2.56 is a HIGHER ratio than 3.27, right? Also, I haven't looked but do both versions of the 6l80e have same internal gear ratios?

Obviously we do, since the Corvette's taller rear end ratio was the point of the thread. I thought both Camaro and Corvette auto boxes had the same internal ratios. If not, I guess this is all a waste of time

TxBandit911 · 03-22-2014, 05:43 PM

Quote:

Originally Posted by 3rdgen3

Its very close. And this is exactly why the rear end ratios are so much lower on the vette to account for the change.

This is why I asked....

patengine · 03-22-2014, 05:45 PM

They have the same internal ratios, i checked this via several sources since their rear end ratios were so different.

not · 03-22-2014, 09:37 PM

And the 3.91 1LE gearing rules........

J-vette · 03-22-2014, 10:28 PM

Quote:

Originally Posted by not

And the 3.91 1LE gearing rules........

True, but trans is different,

03-22-2014, 02:38 PM	#1
patengine Drives: chrysler 300c Join Date: Mar 2014 Location: california Posts: 2	Camaro rear axle vs Corvette, 6 speed auto Hi guys, I was looking at the gear ratios of the automatic camaro and corvette and noticed while their gear ratios are identical since both use the 6l80e transmission, their rear axle ratios are different. The camaro has a 3.27 while the corvette has a 2.56 or option 2.73. I know the camaro is about 500 lbs heavier than the corvette, but doesn't that significantly shorter rear end gearing make the camaro have a lot more punch at low speeds?

03-22-2014, 04:50 PM	#3
E.T. Drives: 2012 Camaro 2SS/RS Join Date: Jul 2010 Location: Cleveland, OH Posts: 3,267	I wonder if the 2.56 gear in the 'vette at least equivalent to the 3.27 in the Camaro? I know changing tire diameter will make a car behave as if it had a different gear ratio, but I don't know to convert. Personally, I think the Camaro is under-geared for being how heavy it is. 3.70's do wonders for the auto. __________________

03-22-2014, 04:39 PM	#2
SS376 Drives: 2013 1SS LS3 Join Date: Feb 2014 Location: Massachusetts Posts: 807	Corvette rear tires have around a 2 inch smaller diameter than Camaro SS rear tires. Between 26.5 and 27 depending on the model for the Vette, vs almost 29 for the Camaro.

03-22-2014, 05:09 PM	#6
TxBandit911 Call Me"Doc" Drives: 2014 2SS/RS 1LE BLACK Join Date: Apr 2009 Location: Ft Riley, Kansas Posts: 890	Um...you guys realize that 2.56 is a HIGHER ratio than 3.27, right? Also, I haven't looked but do both versions of the 6l80e have same internal gear ratios?

03-22-2014, 05:45 PM	#9
patengine Drives: chrysler 300c Join Date: Mar 2014 Location: california Posts: 2	They have the same internal ratios, i checked this via several sources since their rear end ratios were so different.

03-22-2014, 09:37 PM	#10
not Account Suspended Drives: Camaro 2SS/RS Join Date: Sep 2013 Location: New Hampshire Posts: 341	And the 3.91 1LE gearing rules........