GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1997 🢒 Century 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Model Build Information

Transmission Model

7FBB

7FHB

7YSB

7XAB

7YWB

Vehicle Series

C,G,H

C,G

W

W

H

Engine Displacement

3.8L

3.8L

3.4L

3.8L

3.8L

Engine RPO Code

L67

L36

LQ1

L67

L67

Engine VIN Code

1

K

X

1

1

Overall Axle Ratio

2.93

3.05

3.42

2.93

2.93

Final Drive Ratio

3.29

3.05

3.05

3.29

3.29

Drive/Driven Sprocket Teeth

37/33

35/35

33/37

37/33

37/33

VSS Rotor Teeth

30

30

30

30

30

Final Drive Assembly

HD

STD

STD

HD

HD

Output Shaft

LONG

STD

STD

LONG

LONG

Torque Converter K-factor

133

133

177

155

133

Converter Clutch

TCC

TCC

TCC

TCC

TCC

Case Side Cover Pan

SSC

SSC

SSC

SSC

SSC

Transmission Vent Assembly

CAP

CAP

CAP

CAP

CAP

Notes:

    • FP = Fine Pitch
    • HD = Heavy Duty
    • N/A = Not Available
    • SSC = Case Aluminum Structural Side Cover Pan
    • STD = Standard
    • STEEL = Stamped Steel Side Cover Pan
    • VSS = Vehicle Speed Sensor
    • K-factor = Torque converter numeric rating (combines stall speed and torque multiplication ratings)

This chart does not identify all unique build items and this chart may be subject to change.