• Got the Contributing Memberships stuff finally worked out and made up a thread as a sort of "How-To" to help people figure out how to participate. So if you need help figuring it out, here's the thread you need to take a look at -> http://www.corvetteflorida.com/forums/showthread.php?t=3581 Thank you, everyone! Rich Z.

gearing on a 2003 z06

D

DrPMR

New member
Hey guys, new to the forums, been lurking a while, figured i'd ask here becuase I cant find this anywhere else.

My question is this, I'm looking to buy a 2003 z06, and had a question on the gearing. What are the top speeds for each gear on this car? Someone also told me that 2nd and 3rd are "racing gears" is this true? Thanks in advance for any comments!
 
Darn! I know I've seen that someplace a while back, but went looking for it myself and couldn't locate the info. I wonder if it may be in the service manuals? All kinds of goodies in those books....

Welcome to the forum, btw...... :welcome:
 
Thank you, I'll look into that!

I know I've seen the info on some website a while back, but now can't find it either! :banghead:

Thanks for the welcome!
 
What's interesting about C5 Z06 gearing is that the percentage drops between first through fourth gears are exactly the same. Then there is a very small drop to fifth, and a larger drop to 6th. Standard 6-speed gearing shows the "normal" progressively smaller drops as you go up through the gears, barring the big drops to the over drive gears. In short, Z06 gearsets are better for road racing, standard gears are better for drag racing or top speed.

The real hot deal setup for straight-line is the standard gearing, and then get new overdrive gears. You can have a steady progression upward with no big drops that way. If/when I get my tranny redone, I will likely do that.

Standard MM6:
1-2/2-3/3-4/4-5/5-6
33%/27/23/26/32

Z06:
30%/30/30/16/33

MM6 with G-Force OD set # 2 (0.8, 0.7):
33%/27/23/20/12.5
 
Gannet said:
What's interesting about C5 Z06 gearing is that the percentage drops between first through fourth gears are exactly the same. Then there is a very small drop to fifth, and a larger drop to 6th. Standard 6-speed gearing shows the "normal" progressively smaller drops as you go up through the gears, barring the big drops to the over drive gears. In short, Z06 gearsets are better for road racing, standard gears are better for drag racing or top speed.

The real hot deal setup for straight-line is the standard gearing, and then get new overdrive gears. You can have a steady progression upward with no big drops that way. If/when I get my tranny redone, I will likely do that.

Standard MM6:
1-2/2-3/3-4/4-5/5-6
33%/27/23/26/32

Z06:
30%/30/30/16/33

MM6 with G-Force OD set # 2 (0.8, 0.7):
33%/27/23/20/12.5
Click to expand...

all very good, but I'm looking for the top speeds.

I found the speeds for a 2001 but not for the 03.. thanks!
 
If you want to know the top speed, you have to go out and measure it with a particular car. Gearing charts don't mean diddly. Stock C5s all top out about the same, 165-175, coupes a little faster than Z06s (better aero and gearing). Modified cars go faster. How much? Depends on the car.
 
As I mentioned on another forum, the C5 Z 6th gear is .57 while the regular C5 six speed 6th is .50. Through the years, the various forum members have reported a C5 Z06 top speed as between 171-174 MPH. Too high for me, but I got 20 years of thrills flying my Mach 2 F-4 Phantom!!!! and, my takeoffs only exceed my landings by one!!!!:dancer01:
 
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