jims mongoose

Does anyone know the rear end ratio and gearbox ratios for the new vette.

Jim

Thanks

Zymurgy

Gear Ratios:


...........................A6....Z51A6.. ...MN7...Z51MN7
.........................------..------..------..------
First gear............... 4.03 .. 4.03 .. 2.66 .. 2.97
Second gear.............. 2.36 .. 2.36 .. 1.78 .. 2.07
Third gear............... 1.53 .. 1.53 .. 1.30 .. 1.43
Fourth gear.............. 1.15 .. 1.15 .. 1.00 .. 1.00
Fifth gear............... 0.85 .. 0.85 .. 0.74 .. 0.71
Sixth gear............... 0.67 .. 0.67 .. 0.50 .. 0.57
Seventh gear............................. 0.42 .. 0.48
Reverse.................. 3.06 .. 3.06 .. 2.90 .. 2.90
Axle ratio............... 2.56 .. 2.73 .. 3.42 .. 3.42

Overall ratios:
...........................A6....Z51A6.. ....MN7...Z51MN7
.........................------..------..------..------
First gear...............10.32 ..11.00 .. 9.10 ..10.16
Second gear.............. 6.04 .. 6.44 .. 6.09 .. 7.08
Third gear............... 3.92 .. 4.18 .. 4.45 .. 4.89
Fourth gear.............. 2.94 .. 3.14 .. 3.42 .. 3.42
Fifth gear............... 2.18 .. 2.32 .. 2.53 .. 2.43
Sixth gear............... 1.72 .. 1.83 .. 1.71 .. 1.95
Seventh gear............................. 1.44 .. 1.64

dollarbill

Excellent info. Thanks for sharing.

I would suggest that it be moved into the sticky section

jims mongoose

Thank you for the quick response. Now I can compare what the car does verus what I expect it should do.

Jim

Jay_Davis

Does anyone have an updated chart that includes the A8?

Zymurgy

Gear Ratios:
...........................A8....Z51A8.. ...MN7...Z51MN7
.........................------..------..------..------
First gear............... 4.56 .. 4.56 .. 2.66 .. 2.97
Second gear.............. 2.97 .. 2.97 .. 1.78 .. 2.07
Third gear............... 2.08 .. 2.08 .. 1.30 .. 1.43
Fourth gear.............. 1.69 .. 1.69 .. 1.00 .. 1.00
Fifth gear............... 1.27 .. 1.27 .. 0.74 .. 0.71
Sixth gear............... 1.00 .. 1.00 .. 0.50 .. 0.57
Seventh gear............. 0.85 .. 0.85 .. 0.42 .. 0.48
Eighth gear.............. 0.65 .. 0.65 .. .... .. ....
Reverse.................. 3.82 .. 3.82 .. 2.90 .. 2.90
Axle ratio............... 2.41 .. 2.73 .. 3.42 .. 3.42

Overall ratios:
...........................A8....Z51A8.. ...MN7...Z51MN7
.........................------..------..------..------
First gear...............10.99 ..12.45 .. 9.10 ..10.16
Second gear.............. 7.16 .. 8.11 .. 6.09 .. 7.08
Third gear............... 5.01 .. 5.68 .. 4.45 .. 4.89
Fourth gear.............. 4.07 .. 4.61 .. 3.42 .. 3.42
Fifth gear............... 3.06 .. 3.47 .. 2.53 .. 2.43
Sixth gear............... 2.41 .. 2.73 .. 1.71 .. 1.95
Seventh gear............. 2.05 .. 2.32 .. 1.44 .. 1.64
Eighth gear.............. 1.57 .. 1.77 .. .... .. ....

eboggs_jkvl

Transmission and rear gearing Z51, Non Z51 - 2005-2015




Elmer

TEXHAWK0

Here is a spreadsheet you can use to change to any ratios or tire sizes you want to look at...
The macro buttons at the top will insert the right tire size, gear ratios, and rear end ratio as best I know...

CorvetteRPM_Speed_Calculatormacro2.xls

eboggs_jkvl

It appears that the XLS does not like the automatics.

It also appears to only have 6 gears displayed, rather than the 7 on the C7.

It also does not have the 20" rear tire listed on the bottom of the sheet but it does function and give data for the 20".

I'm afraid It may need a full rework. I'll play with it and see if I can make it work.

Elmer

TEXHAWK0

I know I may have missed a few things. I was just taking a spreadsheet I had for my C5 and adding macros for the C7.

The 20" tires are in there for Z06 and Z51 calculations, but I did not bother to create a table, and I figured the speed in 7th was pointless since it would be limited my other factors such as aerodynamic drag...even in 6th, we know it cannot go over 200mph.

You are right that I did not bother to add info for automatics....

salty4728

What is the max speed in 1st, 2nd ,3rd,and 4th gear in the 2014 c7 Z51 manual transmission.
Thanks

TEXHAWK0

My spreadsheet in post #8 gives you an estimate.
49, 71, 102 147, then aerodynamics most likely become the limiting factor.

salty4728

I figured out how to use the chart.
Thank you so much for the stats.