Differential question
Thread Starter
Instructor
Joined: May 2008
Posts: 148
Likes: 0
Differential question
I own an 02 vert, 6 speed manual. I have added a cold air intake, long tube headers, no cats, and a Borla stinger catback exaust. Was considering upping the rear gear ratio. What is the stock ratio? Suggestions as to what ratios I should consider? It's not a DD so gas mileage is not a huge concern. Thanks to all you members for any suggestions.
Race Director
Joined: Jun 2009
Posts: 12,331
Likes: 139
The stock Ratio is 3.42. What most of my friends with M6s do is either a 3.90 or 4.11. You will see a drop in fuel mileage but with a 6 speed is very minimal. It will make wake her up.
edit: 4.10's sorry
edit: 4.10's sorry
Last edited by 02*C5; Dec 21, 2010 at 03:23 PM.
Thread Starter
Instructor
Joined: May 2008
Posts: 148
Likes: 0
Thanks. If you do let me know and I will do the same for you. I'm the same way. The one thing about the headers is there is a drone right at 1500 rpm and in 6th at 70-75 I'm only turning, you guessed it, 1500. So I run in 5th.
Thread Starter
Instructor
Joined: May 2008
Posts: 148
Likes: 0
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
Very happy. Either the 3.90's or the 4.10's will give you lots of extra grunt. It restores the low end that seems to be missing on NA modded cars that gain lots of high end without a perceived proportional gain on the low side.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Melting Slicks
Joined: Feb 2003
Posts: 2,966
Likes: 22
From: Frederick Maryland
St. Jude Donor '08-'09-'10-'11
I own an 02 vert, 6 speed manual. I have added a cold air intake, long tube headers, no cats, and a Borla stinger catback exaust. Was considering upping the rear gear ratio. What is the stock ratio? Suggestions as to what ratios I should consider? It's not a DD so gas mileage is not a huge concern. Thanks to all you members for any suggestions.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
3.73's for the MN6 are a real good combo! 
Here is a chart that will give you some insight:
Thanks,Matt
Here is a chart that will give you some insight:
Thanks,Matt