Late Model GM Manual Transmission Gear Ratio Chart
T-56 Six-Speed (Corvette)
Type First Gear Second Gear Third Gear Fourth Gear Fifth Gear Sixth Gear

1997-2007 Corvette (base) 2.66 1.78 1.30 1.00 0.74 0.50
2001-07 Corvette Z06 2.97 2.07 1.43 1.00 0.84 0.56
ZF Six-Speed
Type First Gear Second Gear Third Gear Fourth Gear Fifth Gear Sixth Gear

1989-96 Corvette (LT1/4/5) 2.68 1.80 1.31 1.00 0.75 0.50
T-6060 Six-Speed
Type First Gear Second Gear Third Gear Fourth Gear Fifth Gear Sixth Gear

2008-13 Corvette 2.66 1.78 1.30 1.00 0.74 0.50
2008-09 Corvette Z51 2.97 2.07 1.43 1.00 0.71 0.57
2009 Pontiac G8 GXP 2.97 2.10 1.46 1.00 0.71 0.56
2009-13 Cadillac
CTS-V 2.66 1.78 1.30 1.00 0.80 0.63
2010 Camaro SS 3.01 2.07 1.43 1.00 0.84 0.57
2012-15 Camaro ZL1 2.66 1.78 1.30 1.00 0.80 0.63
2015-17 Chevrolet SS 3.01 2.07 1.43 1.00 0.71 0.57
2016-17 Cadillac
ATS-V 2.66 1.78 1.30 1.00 0.79 0.63