Chevrolet 2008 Corvette Owner's Manual page 97

This chart shows when to shift to the next higher gear
for the best fuel economy.
Manual Transmission Recommended
Shift Speeds in mph (km/h)
Acceleration Shift Speed
Engine
1 to 2 2 to 3
All
15 (24) 25 (40) 40 (64) 45 (72) 50 (80)
Engines
If your engine speed drops below 900 rpm, or if the
engine is not running smoothly, you should downshift to
the next lower gear. You may have to downshift two
or more gears to keep the engine running smoothly or
for good engine performance.
Notice: When shifting gears, do not move the shift
lever around unnecessarily. This may damage
the transmission. Shift directly into the next gear.
3 to 4 4 to 5 5 to 6
One to Four Shift Light
(Manual Transmission)
See One-to-Four Shift Light (Manual Transmission) on
page 3-38 for more information.
When this light comes on,
you can only shift from
FIRST (1) to FOURTH (4)
instead of FIRST (1) to
SECOND (2).
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