For 1990-2009 cars

#### 1998 H-Car 3.8L (L67) / 4T65-E Shift Speed Table

Transmission Model | 8FDB
--- | ---
Vehicle Series | H
Engine Displacement | 3.8L
Engine RPO Code | L67
Engine VIN Code | 1
Transmission RPO Code | MN7
Overall Axle Ratio | 2.93
Final Drive Ratio | 3.29
Drive/Driven Sprocket Teeth | 37/33
1-2 Upshift Minimum Throttle | 11 mph
1-2 Upshift Wide Open Throttle (WOT) | 50 mph (5700 RPM)
2-3 Upshift Minimum Throttle | 20 mph
2-3 Upshift Wide Open Throttle (WOT) | 88 mph (5400 RPM)
3-4 Upshift Minimum Throttle | 41 mph
3-4 Upshift Wide Open Throttle (WOT) | 124 mph (PERF)
Minimum TCC Apply -- Third Gear | 28 mph
Minimum TCC Apply -- Fourth Gear | 41 mph
N/V Ratio -- Third Gear/TCC On | 38
N/V Ratio -- Fourth Gear/TCC On | 27

- N/V Ratio = Engine RPM to Vehicle Speed ratio
- PERF = Performance Mode
- Upshift speeds are indicated in miles per hour (mph) and may vary +/- 4 mph
- Engine speed (RPM) is also provided for Wide Open Throttle (WOT) upshifts
- Km/h = mph x 1.609