[ibfootin]

What are the ratios for the M6 in a 2018 ZL1 1LE

[RobbyBeefcake87]

I think everything from 1st to 5th is standard m6 ss/zl1 ratios but 6th is shorter and a usable gear as opposed to just being an overdrive.

When I get home tonight I can give you exact numbers.

[Tim M]

The ZL1 sticky shows the ZL1 6 speed (non-1LE) does have different ratios (also referencing Wikipedia TR6060:

Gear Ratios...............ZL1..........SS
1.............................2.29........2.66
2.............................1.619......1.78
3.............................1.21........1.30
4.............................1.00........1.00
5.............................0.82..........74
6.............................0.54..........50

[arpad_m]

Originally Posted by Tim M

The ZL1 sticky shows the ZL1 6 speed (non-1LE) does have different ratios (also referencing Wikipedia TR6060:

Gear Ratios...............ZL1..........SS
1.............................2.29........2.66
2.............................1.619......1.78
3.............................1.21........1.30
4.............................1.00........1.00
5.............................0.82..........74
6.............................0.54..........50

Automobile-catalog lists different 5th and 6th gear ratios for the ZL1 from the ones you listed, and their data is usually reliable:
GR.........ZL1 1LE...ZL1.....SS.
1.............2.66....2.66....2.66
2.............1.78....1.78....1.78
3.............1.30....1.30....1.30
4.............1.00....1.00....1.00
5.............0.74....0.74....0.74
6.............0.68....0.50....0.50
R.............2.90....2.90....2.90

ZL1 1LE: https://www.automobile-catalog.com/car/2018/2592065/chevrolet_camaro_zl1_1le_coupe_6-speed.html
ZL1: https://www.automobile-catalog.com/car/2018/2592005/chevrolet_camaro_zl1_coupe_6-speed.html
SS: https://www.automobile-catalog.com/car/2018/2224655/chevrolet_camaro_ss_6-speed.html

What is that ZL1 sticky you referred to?


EDIT: fixed ZL1 1LE vs ZL1 6th gear ratio, thanks RobbyBeefcake87

[RobbyBeefcake87]

Originally Posted by arpad_m

Automobile-catalog lists different 5th and 6th gear ratios for the ZL1 from the ones you listed, and their data is usually reliable:
GR.........ZL1 1LE...ZL1.....SS.
1.............2.66....2.66....2.66
2.............1.78....1.78....1.78
3.............1.30....1.30....1.30
4.............1.00....1.00....1.00
5.............0.74....0.74....0.74
6.............0.50....0.68....0.50
R.............2.90....2.90....2.90

ZL1 1LE: https://www.automobile-catalog.com/car/2018/2592065/chevrolet_camaro_zl1_1le_coupe_6-speed.html
ZL1: https://www.automobile-catalog.com/car/2018/2592005/chevrolet_camaro_zl1_coupe_6-speed.html
SS: https://www.automobile-catalog.com/car/2018/2224655/chevrolet_camaro_ss_6-speed.html

What is that ZL1 sticky you referred to?

That looks about correct except the zl1 needs to be switched around with the zl1 1le. The zl1 1le is the one with the more aggressive 6th gear (.68 vs .50)

For the zl1 1le I have also seen all the same as you listed for 1st through 4th (2.66,1.78, 1.30, 1.00) but .800 for 5th and .63 for 6th, though I'd imagine the .74 for 5th is correct and the same for the ss, zl1, and zl1 1le across the board. With the zl1 1le's only change being 6th, a .68 or .63 vs the other models .50.

[Tim M]

I don't think your ZL1 numbers are correct.

This board's ZL1 sticky says differently:

https://www.camaro6.com/forums/showthread.php?t=482277

An SS 1LE 5th gear is 'taller' than a ZL1's...based on video of high speed runs done by Hennessey, etc.

[wnta1ss]

ZL1 and ZL1/1LE both seem to have a .818 ratio for 5th gear. The regular ZL1 has the .54 sixth gear, while the ZL1/1LE has the .68 sixth.

Here are the gear ratios read from a ZL1 tune file (regular Z not a 1LE):
1=2.289
2=1.611
3=1.208
4=1.000
5=0.818
6=0.536


Edited to add: found another tune file, from a 2018 ZL1, and it has a 0.675 ratio for 6th gear. Probably from a 1LE, though the posting did not specify. More evidence of it being a 1LE is that the speedo calibration has 766 revs/mi, compared to 748 from the calibration of the 2017 (regular ZL1). As we know, the 1LE has 19" wheels instead of 20".

[RobbyBeefcake87]

Originally Posted by wnta1ss

ZL1 and ZL1/1LE both seem to have a .818 ratio for 5th gear. The regular ZL1 has the .54 sixth gear, while the ZL1/1LE has the .68 sixth.

Here are the gear ratios read from a ZL1 tune file (regular Z not a 1LE):
1=2.289
2=1.611
3=1.208
4=1.000
5=0.818
6=0.536


Edited to add: found another tune file, from a 2018 ZL1, and it has a 0.675 ratio for 6th gear. Probably from a 1LE, though the posting did not specify. More evidence of it being a 1LE is that the speedo calibration has 766 revs/mi, compared to 748 from the calibration of the 2017 (regular ZL1). As we know, the 1LE has 19" wheels instead of 20".

I've seen that .8 5th gear ratio as well from the same source that said the zl1 1le 6th gear was a .63. Though I've seen .68, I just know for a fact it's not the super tall .50 from the ss. I was always under the impression the zl1 1le had a shorter 6th gear than the zl1.

My source is the gran turismo sport game lol.. seems to have correct ratios for every car I've checked. Camaro SS ratios are dead on as well as c7 z51 and dodge viper, I cross referenced them with car and driver/road and track publishings.

A shame none of the major publications have a gear by gear ratio spec sheet for the zl1 1le like they do for the ss's.

[Mountain]

These are the ratios according to the service information:

[Tim M]

Great reference! Thanks.

[RobbyBeefcake87]

Originally Posted by wnta1ss

ZL1 and ZL1/1LE both seem to have a .818 ratio for 5th gear. The regular ZL1 has the .54 sixth gear, while the ZL1/1LE has the .68 sixth.

Here are the gear ratios read from a ZL1 tune file (regular Z not a 1LE):
1=2.289
2=1.611
3=1.208
4=1.000
5=0.818
6=0.536


Edited to add: found another tune file, from a 2018 ZL1, and it has a 0.675 ratio for 6th gear. Probably from a 1LE, though the posting did not specify. More evidence of it being a 1LE is that the speedo calibration has 766 revs/mi, compared to 748 from the calibration of the 2017 (regular ZL1). As we know, the 1LE has 19" wheels instead of 20".

Originally Posted by Mountain

These are the ratios according to the service information:

Awesome!