[Z06] 4.10's owners, question
Thread Starter
Le Mans Master
Joined: Feb 2007
Posts: 6,674
Likes: 57
From: Mt Pleasant, TN
4.10's owners, question
I am thinking about adding a set of 4.10's but would like to know about what mph you shift at in each gear and what rpm you shift at when at WOT. Thanks.
Thread Starter
Le Mans Master
Joined: Feb 2007
Posts: 6,674
Likes: 57
From: Mt Pleasant, TN
Thanks for the answer, but when I say what mph do you shift at I am refering to WOT only. Mainly I want to know about the top of 3rd and 4th.
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
I've had 4.10 gears on a bolt on 03 Z and they are a blast. I shifted at WOT just like you would if you had the stock 3.42 in there, around 6300 or so, and that LS6 revs a lot quicker with the 4.10s and the car REALLY WAKES up but traction is a joke without a sticky tire in the first 2 gears.
Don't know the answer to your other questions!
Don't know the answer to your other questions!
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
Don't need a retune for gear swap on a manual tranny C5, that I am positive about. Auto tranny yes M12/M6 tranny no.
You can buy the complete rear end pumpkin set-up with the 4.10 gears in them for around $1,900 and you just swap out your stock rear end pumpkin with the new rear end pumkin that contains the aftermarket gear ration be it 3.73, 3.90 or 4.10.
Will probably cost you at least $750 to $1,000 in labor if you don't do it yourself!
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Thread Starter
Le Mans Master
Joined: Feb 2007
Posts: 6,674
Likes: 57
From: Mt Pleasant, TN
I've had 4.10 gears on a bolt on 03 Z and they are a blast. I shifted at WOT just like you would if you had the stock 3.42 in there, around 6300 or so, and that LS6 revs a lot quicker with the 4.10s and the car REALLY WAKES up but traction is a joke without a sticky tire in the first 2 gears.
Don't know the answer to your other questions!
Don't know the answer to your other questions!
Thread Starter
Le Mans Master
Joined: Feb 2007
Posts: 6,674
Likes: 57
From: Mt Pleasant, TN
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
Pro
Joined: Dec 2005
Posts: 688
Likes: 0
From: las Vegas N.V.
Melting Slicks
Joined: Sep 2007
Posts: 3,155
Likes: 45
From: Merced California
Where does the manual C5 speedo measure speed if the gears do not affect it? Must be on the rear axles I assume.
Last edited by redtopz; Nov 3, 2007 at 06:58 PM.
Thread Starter
Le Mans Master
Joined: Feb 2007
Posts: 6,674
Likes: 57
From: Mt Pleasant, TN
Thanks Bill, I believe there is a sensor on the trans that controlls the speedo and the odometer. I did the calculations and that was about what i got also, but then I asked Richie (02Z w/ 4.10's) and said he thinks his 4th goes all the way to 128ish but couldnt remember exactly.
Melting Slicks
Joined: Sep 2007
Posts: 3,155
Likes: 45
From: Merced California
Thanks Bill, I believe there is a sensor on the trans that controlls the speedo and the odometer. I did the calculations and that was about what i got also, but then I asked Richie (02Z w/ 4.10's) and said he thinks his 4th goes all the way to 128ish but couldnt remember exactly.
. Also I just found another post where a guy put 4.10s in his zo6 and said he topped out at 117 mph. If I were you I would do 3.90 gears. That would get you up to around 123 mph in 4th which would probably be better for the strip.
Pro
Joined: Feb 2005
Posts: 622
Likes: 0
From: Conway SC
I would agree with the last post, M12 with 4.10's would put you right at 6800 or above in 4th gear. 3.90's would be better, not unless you have your limiter set at 7200 ot higher.
Some food for thought..
Ernie
Some food for thought..
Ernie
Thread Starter
Le Mans Master
Joined: Feb 2007
Posts: 6,674
Likes: 57
From: Mt Pleasant, TN
I'm not sure if the top speed in 4th stock is 140 mph, but if it is you will top out at 117 with 4.10's. The ratio will not lie . Also I just found another post where a guy put 4.10s in his zo6 and said he topped out at 117 mph. If I were you I would do 3.90 gears. That would get you up to around 123 mph in 4th which would probably be better for the strip.
. Also I just found another post where a guy put 4.10s in his zo6 and said he topped out at 117 mph. If I were you I would do 3.90 gears. That would get you up to around 123 mph in 4th which would probably be better for the strip.