diverdan said:
I'm familiar with that part.
I was referring to the 2 different types of manual transmissions: the M6 and the M12.
Mn6 and m12 are two different transmissions.My 05 is an m12. Same tranny that is in the z06. They are two different versions of the Tremec T-56. The m12 has shorter 1-3 gears an equal 1to1 4th and shorter 5th and 6th.
gear mn6 m12
1st 2.66 2.97
2nd 1.78 2.07
3rd 1.30 1.43
4th 1.00 1.00
5th .74 .84
6th .50 .57
A common misconception is that the Corvette 6 speed is a transaxle. The automatic is a transaxle, but the 6 speed is a seperate unit mounted in front of a differential. Our GTO's share the transmission and rear differential of the Corvette, with our cars having different half shafts. Our cars have the transmission mounted directly behind the engine, the Corvette has it mounted in the back.
The T-56 Tremec was used by Ford for the supercharged Cobra, and is used by Dodge for the Viper and SRT-10 trucks. GM used it in the F-Bodies, and now uses it in the Corvette, GTO and CTS-V.
It is basically unbreakable with less than 750 hp.
I just checked my 05 and it is an m12. The lower gears were probably selected to offset the weight.