What are the gear ratios for the base model Chevrolet Corvette C6 with a manual 6-speed transmission?

For a base model C6 Corvette with the 6-speed manual transmission (without the Z51 package), the internal gear ratios are:

• 1st: 2.66
• 2nd: 1.78
• 3rd: 1.30
• 4th: 1.00
• 5th: 0.74
• 6th: 0.50

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Additionally, all manual transmission C6 Corvettes are equipped with a 3.42:1 rear differential gear ratio from the factory ².

Keep in mind that if your car has the Z51 performance package, the transmission is geared more aggressively in the lower gears for quicker acceleration out of corners. The Z51 manual ratios are 2.97 (1st), 2.07 (2nd), 1.43 (3rd), 1.00 (4th), 0.71 (5th), and 0.57 (6th) ⁵.