[Tru2Chevy]

2009 Sky Redline Trans Gear Ratios

# Trans Description Cont.: Manual
# First Gear Ratio (:1): 3.75
# Second Gear Ratio (:1): 2.26
# Third Gear Ratio (:1): 1.51
# Fourth Gear Ratio (:1): 1.00
# Fifth Gear Ratio (:1): 0.73
# Reverse Ratio (:1): 3.67

# Trans Description Cont.: Automatic
# First Gear Ratio (:1): 3.42
# Second Gear Ratio (:1): 2.21
# Third Gear Ratio (:1): 1.60
# Fourth Gear Ratio (:1): 1.00
# Fifth Gear Ratio (:1): 0.75
# Reverse Ratio (:1): 3.02

After doing the math, the gear swap would make sense, unless you care about mileage on long highway trips. First would still be shorter overall with the auto and 3.91s than with the manual and 3.73s.

- Justin