GM Service Manual Online
For 1990-2009 cars only

Hydra-Matic 4T60-E Shift Speed Chart

Transmission Model

6CAW

6CTW

Vehicle Series

G

G

Engine Displacement

3.8L

3.8L

Engine RPO Code

L36

L67

Engine VIN Code

K

1

Overall Axle Ratio

3.05

2.93

Final Drive Ratio

3.05

3.29

Drive/Driven Sprocket Teeth

35/35

37/33

Minimum Throttle 1-2 Upshift

11

11

Wide Open Throttle 1-2 Upshift

46

45

Minimum Throttle 2-3 Upshift

20

21

Wide Open Throttle 2-3 Upshift

89

85

Minimum Throttle 3-4 Upshift

45

47

Wide Open Throttle 3-4 Upshift

N/A

N/A

Minimum TCC Apply - Third Gear

36

40

Minimum TCC Apply - Fourth Gear

45

47

N/V Ratio - Third Gear/TCC On

40

39

N/V Ratio - Fourth Gear/TCC On

28

27

  • N/V Ratio = Engine RPM to Vehicle Speed Ratio
  • N/A = Not Available
  • Speeds are indicated in Miles Per Hour (MPH). MPH = Km/h x 1.609