C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Performance difference between 2.56 and 2.73 gears

Thread Tools
 
Search this Thread
 
Old Dec 10, 2008 | 12:05 AM
  #1  
rcmigpilot's Avatar
rcmigpilot
Thread Starter
Racer
 
Joined: Jun 2006
Posts: 410
Likes: 0
From: Berwick Louisiana
Default Performance difference between 2.56 and 2.73 gears

What kind of performance difference is there between an A6 with 2.56 versus one with 2.73 gears? How much faster in the 1/4 would the 2.73 car be?
Reply
Old Dec 10, 2008 | 12:43 AM
  #2  
siffert's Avatar
siffert
Safety Car
10 Year Member
 
Joined: Aug 2006
Posts: 4,206
Likes: 6
From: Makena, Maui & NM
Default

Originally Posted by rcmigpilot
What kind of performance difference is there between an A6 with 2.56 versus one with 2.73 gears? How much faster in the 1/4 would the 2.73 car be?
Like I said in the other thread...about .10 max, if that.

The difference between 2.56 & 2.73 is 0.17.
The difference between 2.73 and 3.42 is 0.69
The difference between 2.56 and 3.42 is known to pick up .around 20 to .30.

0.17 divided by 0.69 is 0.24 or 24%. Therefore, the change from 2.56 to 2.73 should pick up only 24% of what the change between 2.73 and 3.42 did.

24% times 2 tenths = 0.5 of half of a tenth
24% times 3 tenths = 0.72 or less than three fourths of a tenth.

Last edited by siffert; Dec 10, 2008 at 12:51 AM.
Reply
Old Dec 10, 2008 | 02:02 AM
  #3  
rcmigpilot's Avatar
rcmigpilot
Thread Starter
Racer
 
Joined: Jun 2006
Posts: 410
Likes: 0
From: Berwick Louisiana
Default

Originally Posted by siffert
Like I said in the other thread...about .10 max, if that.

The difference between 2.56 & 2.73 is 0.17.
The difference between 2.73 and 3.42 is 0.69
The difference between 2.56 and 3.42 is known to pick up .around 20 to .30.

0.17 divided by 0.69 is 0.24 or 24%. Therefore, the change from 2.56 to 2.73 should pick up only 24% of what the change between 2.73 and 3.42 did.

24% times 2 tenths = 0.5 of half of a tenth
24% times 3 tenths = 0.72 or less than three fourths of a tenth.
Gotcha, looks like you were posting to the other thread while I was posting this.
Reply
Old Dec 10, 2008 | 02:07 AM
  #4  
siffert's Avatar
siffert
Safety Car
10 Year Member
 
Joined: Aug 2006
Posts: 4,206
Likes: 6
From: Makena, Maui & NM
Default

Originally Posted by rcmigpilot
Gotcha, looks like you were posting to the other thread while I was posting this.
That 2.73 is only a good .10 deal if you buy a new one as part of the $1,500 Z51 option or as a $395.00 separate option. Pay any more, not worth it.
Reply
Old Dec 10, 2008 | 08:40 AM
  #5  
Joe_G's Avatar
Joe_G
Tech Contributor
20 Year Member
Photogenic
Liked
Loved
 
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Default

don't do it. I did it on my Mustang GT years ago and it was a waste. At least it was only a few hundred for that car. go 3.42 or 3.73.
Reply

Get notified of new replies

To Performance difference between 2.56 and 2.73 gears





All times are GMT -4. The time now is 12:39 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE