Ok, Installed 3.90, my speedometer has not changed???
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 825
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From: San Diego(Sabre Springs) Ca
Ok, Installed 3.90, my speedometer has not changed???
My speedometer is excatly the same as when I had 3.42, no change. I know I need to change the gear ratio with tuners, but my speedo should be off a little, right?
Also, I have not really laid into the pedal, I am breaking the gears in, but it does not seem like I have 3.90, still feels like I have 3.42???
Also, I have not really laid into the pedal, I am breaking the gears in, but it does not seem like I have 3.90, still feels like I have 3.42???
Melting Slicks
Joined: Mar 2001
Posts: 2,979
Likes: 281
From: Tulsa OK
No corrections needed on 6 speed cars.
If you can't tell a difference between 3.42s and 3.90s, something is up. Wait until you are finished with the break-in before passing judgement. You will notice.
If you can't tell a difference between 3.42s and 3.90s, something is up. Wait until you are finished with the break-in before passing judgement. You will notice.
Race Director
Joined: Oct 2002
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From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
Since the reading is taken from a wheel speed sensor, the only thing that will affect the speedometer reading is tire size. A gear change won't do it.
No tuning is required for a gear change on M6 cars.
A4 cars need it to adjust shift points and prevent from over-revving, that's it, nothing to do with the speedometer.
No tuning is required for a gear change on M6 cars.
A4 cars need it to adjust shift points and prevent from over-revving, that's it, nothing to do with the speedometer.
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 825
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From: San Diego(Sabre Springs) Ca
CHICAGO CREW !
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From: We are living in a Bazzaro World everything is upside down half ass backwards !
CI 4-5-6-7-8-9 Veteran
St. Jude Donor '06-'07-'08 & '12
Since the reading is taken from a wheel speed sensor, the only thing that will affect the speedometer reading is tire size. A gear change won't do it.
No tuning is required for a gear change on M6 cars.
A4 cars need it to adjust shift points and prevent from over-revving, that's it, nothing to do with the speedometer.
No tuning is required for a gear change on M6 cars.
A4 cars need it to adjust shift points and prevent from over-revving, that's it, nothing to do with the speedometer.
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Team Owner
Joined: Apr 2001
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From: S.W. Ohio. . . . . . NRA Life Member
No (speedo) corrections needed on 6 speed cars.
(looks like johnnyvettes beat me to it !!!)
Also, I have not really laid into the pedal, I am breaking the gears in, but it does not seem like I have 3.90, still feels like I have 3.42???
.
Last edited by Mike Mercury; Jun 24, 2007 at 09:45 PM.
Melting Slicks
Joined: May 2006
Posts: 2,936
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From: Westchester County New York
I went with 4.10's and I notice a big difference...
Hows 6th gear for you?.....same as it was or some more ooomph to it?
with my 4.10's 6th gear is now usable and acceleration off of the line is noticably better...LOVE them....had them put in by Chuck at Corvettes of Westchester.....
Hows 6th gear for you?.....same as it was or some more ooomph to it?
with my 4.10's 6th gear is now usable and acceleration off of the line is noticably better...LOVE them....had them put in by Chuck at Corvettes of Westchester.....
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 825
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From: San Diego(Sabre Springs) Ca
I just read about no need for a speedo change on your website. Last time I did gears on a car was on my 2000 Camaro. So I was pretty shocked when the speedo was the same.
That being said, I hope once the gears are broken in, I will notice a big difference. That is a pretty big jump...3.42 to 3.90, I would assume.
Burning Brakes
Joined: Aug 2006
Posts: 754
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From: dothan alabama
i love em
i have bolt ons on my 99 frc i did 3.90's and i love em every gear is where it should have been from the factory. wait till the break in point is over then row through 1-3 you will notice
Thread Starter
Burning Brakes
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From: San Diego(Sabre Springs) Ca
Team Owner
Joined: Mar 1999
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From: At the beach in little Rhody
The reason I asked if it was a six speed is you can go to the DTE web site and look at the approximate RPM in each gear. From that you should be able to tell your gear ratio. Also, when I broke mine in I had a hard time too distinguishing the new gears but when driving in 4th I did notice more exhaust noise because the motor was turning faster. Once broken in and you can get on it a bit more, the gear are now much more noticable 
Melting Slicks
Joined: May 2006
Posts: 2,936
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From: Westchester County New York
The one that Chuck at CoW installed in my car has a BIG 4.10 on the diff cover so there is no question later on down the line...
Last edited by Nyvetteguy007; Jun 25, 2007 at 07:59 AM. Reason: adding info
Thread Starter
Burning Brakes
Joined: Jun 2002
Posts: 825
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From: San Diego(Sabre Springs) Ca
A couple of forum member's helped me out, they did a great job!
http://forums.corvetteforum.com/show....php?t=1740077
Melting Slicks
Joined: May 2006
Posts: 2,936
Likes: 260
From: Westchester County New York
A couple of forum member's helped me out, they did a great job!
http://forums.corvetteforum.com/show....php?t=1740077
http://forums.corvetteforum.com/show....php?t=1740077
doyou have the old gears..theres gotta be a way to ck the ratio on them...
Thread Starter
Burning Brakes
Joined: Jun 2002
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From: San Diego(Sabre Springs) Ca
Racer
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From: Waukee IA