Raazor

Does anyone have the top speed by gear for the Z51? I'd like this info without actually doing the tests myself.

Thanks,

BlackZ51Vett

This has been posted here in the recent past. You can use one of the below converters, the trans gear ratios and figure out what your looking for.......

http://www.csgnetwork.com/automotiveconverters.html

johnodrake

Buzz, you can try this one: http://mysite.verizon.net/foofoo2/c6/index.html

Raazor

Thanks guys.

Vette_DD

Yes, this is the easier one to use if you're talking about a C6.

Wayne O

Here's an approximate guide:

ENGINE<------Vehicle_Speed------------>
RPM...1ST...2ND...3RD...4TH...5TH...6TH
1000....8....13....20....27....37....47
1500...12....20....31....41....55....70
2000...16....26....41....43....73....93
2500...20....33....51....68....92...116
3000...23....40....61....81...110...140
3500...27....46....71....95...128...163
4000...31....53....82...109...147...186
4500...35....60....92...122...165...186
5000...39....66...102...136...184...186
5500...43....73...112...149...186...186

Vette_DD

Wayne, looks like an error at 2000 rpm in 4th gear. If top speed in 3rd is 41 mph, I don't think top speed in 4th is going to only be 2 mph faster.

LarryMJones

Are all Z 51's the same rear end ratio?
And is this chart for a Z 51? If not what rear axle ratio was used for the chart.
LJ

Raazor

Hmmm... these two charts are quite different.

Vette_DD

All manual transmission Z51s have the same rear axle ratio. The automatic Z51s may have 2.53, 2.76, or 3.15, depending on the model year.

The link that johnodrake posted will let you enter the right chart by simply clicking on the right link for the tranny & rear axle ratio you're talking about.

Wayne's chart seems to be an approximation for most manual C6 trannies.

07MontRedcp

Here is one that also takes into account tires size. You need Excel.

BJK

Raazor

Holy Crap! That's awesome. Thank you!

dbratten

Glad you like it.

Here's an update with the tire size calculator built in:

http://bolero.csustan.edu/C6/C6_Gears.xls

--Dan

07MontRedcp

Nice addition. I'll trash my old copy. I might note one correction, the Z51 manual transmission is a MZ6

BJK

dbratten

Good catch. I updated it.

Thanks.

--Dan

Raazor

Nice. Thanks guys.