changing from m6 to m12 6-speed
Melting Slicks
Joined: Dec 2002
Posts: 2,480
Likes: 62
From: Middletown DE
Gearing - on the m12 the 1-4 gears are different ratios then the m6.
This is what give the z06 all it's acceleration - a c5 with an m6 with 400 hp vs a z06 with a m12 with 400 hp = the z will whoop it up.
The rear end is still a 3.42, but it is all in the trans.
This is what give the z06 all it's acceleration - a c5 with an m6 with 400 hp vs a z06 with a m12 with 400 hp = the z will whoop it up.
The rear end is still a 3.42, but it is all in the trans.
Safety Car
Joined: Nov 2003
Posts: 4,979
Likes: 5
From: San Diego, CA "leaf" "tee" "e"
From http://www.zo6vette.com/forums/showthread.php?t=60015
M12 6-Speed Manual
This transmission is unique to the Z06, and is the only transmission available for that model. It is not available on Corvette coupes or convertibles. It has more aggressive gearing to increase torque multiplication in most forward gears, allowing for more rapid acceleration and more usable torque at higher speeds.
A transmission temperature sensor was added to protect the M12 from higher thermal stresses. The sensor warns the driver via the Driver Information Center with a TRANS OVER TEMP light if thermal loads become excessive, meaning that the transmission could be damaged if not allowed to cool down.
Gear Ratios
LS1/MM6 LS6/M12
1st Gear 2.66:1 2.97:1
2nd Gear 1.78:1 2.07:1
3rd Gear 1.30:1 1.43:1
4th Gear 1.00:1 1.00:1
5th Gear 0.74:1 0.84:1
6th Gear 0.50:1 0.56:1
Reverse 2.90:1 3.28:1
M12 6-Speed Manual
This transmission is unique to the Z06, and is the only transmission available for that model. It is not available on Corvette coupes or convertibles. It has more aggressive gearing to increase torque multiplication in most forward gears, allowing for more rapid acceleration and more usable torque at higher speeds.
A transmission temperature sensor was added to protect the M12 from higher thermal stresses. The sensor warns the driver via the Driver Information Center with a TRANS OVER TEMP light if thermal loads become excessive, meaning that the transmission could be damaged if not allowed to cool down.
Gear Ratios
LS1/MM6 LS6/M12
1st Gear 2.66:1 2.97:1
2nd Gear 1.78:1 2.07:1
3rd Gear 1.30:1 1.43:1
4th Gear 1.00:1 1.00:1
5th Gear 0.74:1 0.84:1
6th Gear 0.50:1 0.56:1
Reverse 2.90:1 3.28:1
Safety Car
Joined: Nov 2003
Posts: 4,979
Likes: 5
From: San Diego, CA "leaf" "tee" "e"
From http://forums.corvetteforum.com/showthread.php?t=345793
Stronger Driveshaft
The driveshaft is upgraded from a metal-matrix composite to aluminum alloy 6061, and it is increased in diameter from 55 to 63 mm. Driveshaft couplings have also been upgraded on manual-equipped models for additional strength and durability.
New Synchronizers
Carbon blocker rings have been installed on all manual transmission forward gears to provide for smoother shifts and additional robustness.
In the case of the Z06, a car that begs to be driven hard on the racetrack, most of the other components in the drivetrain were optimized for durability and improved performance.
Vehicle Speed @ Redline
LS1/MN6 LS6/M12
1st Gear 51 48
2nd Gear 76 69
3rd Gear 104 100
4th Gear 136 143
5th Gear 175 171
6th Gear N/A N/A
Reverse - -
Stronger Driveshaft
The driveshaft is upgraded from a metal-matrix composite to aluminum alloy 6061, and it is increased in diameter from 55 to 63 mm. Driveshaft couplings have also been upgraded on manual-equipped models for additional strength and durability.
New Synchronizers
Carbon blocker rings have been installed on all manual transmission forward gears to provide for smoother shifts and additional robustness.
In the case of the Z06, a car that begs to be driven hard on the racetrack, most of the other components in the drivetrain were optimized for durability and improved performance.
Vehicle Speed @ Redline
LS1/MN6 LS6/M12
1st Gear 51 48
2nd Gear 76 69
3rd Gear 104 100
4th Gear 136 143
5th Gear 175 171
6th Gear N/A N/A
Reverse - -
