z06 Transmission

[DJW32]

Hi all,
Some z06's are making crazy power! How can the new Z06 trans hold 600-700 horsepower?
My questions:
1. Where can I find information about the new trans
2. What is different between the new z06 trans and the old t-56 trans

Any help would be great. Thanks, david

[Ralph LoGrasso]

David,

FYI, there are a lot of guys running 600-700hp through stock or slightly modified F-body T56s. The biggest thing will depend on how hard you can hook the car. Also, the C5 Z06s used the MN12 transmission, it's basically a T56, but 1st gear had a different ratio, I think all of the other gears are the same. Keep in mind that the Z06 uses a transaxle as well. Hopefully someone will be able to provide some more info on the trans.

[WS6]

the new Z06 uses the M12 as well. no changes except the clutch from what i understand. GTO uses the M12 also if your trying to score one from a junk yard or soemthing.

[DJW32]

Where can I read up on the transmission?

Is the part number MN12 or M12?

[WS6]

not sure on part number, but considering its an RPO code it must be only three characters. that would make it M12. if you ask anyone and tell them your need info on the M12 T56 thats in the new Z06 and GTO they will know what you need.

[LSxChevelle]

New Z06 has a lot of beefier stuff inside. I read a post over on another forum after a shop pulled one apart. My understanding is that the Corvette trans is set up a little bit differently due to the torque tube and transaxle setup.

Jason