Unless you are going to upgrade the gears (3.15s/3.42s etc.) later on anyway, then one might be better off applying that money towards the aftermarket gears/labor.
2008 with option 2.73 axle
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
Racer
Joined: Nov 2007
Posts: 477
Likes: 0
From: Dallas Texas
Glad to hear this, I ordered the "performance" (2.73) gear rario on my A6 transmission equipped Vette I will be receiving in February. I wasn't sure how much it would help, but decided to get it anyway.
Advanced
Joined: Oct 2004
Posts: 77
Likes: 5
From: Northeast Ohio
I went from the 06 Auto 2.56 set up to the 08 Auto 2.73 setup and with
all of the new changes it is difficult to pinpoint how much improvement
the axle ratio contributed to how fantastic the Vette runs. But from
past experience in other Vettes with the "performance axle" ,it was
a no-brainer. Glad I did it, but it came with the Z51 as part of the package, which was perfect.
all of the new changes it is difficult to pinpoint how much improvement
the axle ratio contributed to how fantastic the Vette runs. But from
past experience in other Vettes with the "performance axle" ,it was
a no-brainer. Glad I did it, but it came with the Z51 as part of the package, which was perfect.
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,404
From: Bethesda MD
For the roughly $300 to order them, no other mod will improve the feel of the car. The hard thing is to pass up installing 3.15s
Melting Slicks
Joined: Feb 2000
Posts: 3,145
Likes: 537
From: Upland CA
I have the same dilemma. I am ordering a new 2008 with F55. Since it will be a daily driver, I have no plans to mod it (My C5 gets all of the mods). I drive a lot of miles per year (15-20K) so fuel economy is important to me. The 2.73 is only 6.6% lower than the base 2.56, that's about 100 RPM @ 70MPH. I does not seem the 2.73 will make much difference in either performance or fuel economy. I read the biggest change in feel will be the mid-range, in-gear passing.
There was a much greater difference in the C5 axle option, 2.73 to 3.15 or 15%. I don't think one can compare the performance axle option benefit on the C5 to the C6.
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i have the 2.73 gears in my 08 and they work just fine.