For 1990-2009 cars

#### Hydra-Matic 4T65-E Shift Speed Chart

Transmission Model | 7YWB | 7FBB | 7FHB | 7YSB | 7XAB
--- | --- | --- | --- | --- | ---
Vehicle Series | H | C,G | C,G | W | W
Engine Displacement | 3.8L | 3.8L | 3.8L | 3.4L | 3.8L
Engine RPO Code | L67 | L67 | L36 | LQ1 | L67
Engine VIN Code | 1 | 1 | K | X | 1
Transmission RPO Code | MN7 | MN7 | MN3 | M15 | MN7
Overall Axle Ratio | 2.93 | 2.93 | 3.05 | 3.42 | 2.93
Final Drive Ratio | 3.29 | 3.29 | 3.05 | 3.05 | 3.29
Drive/Driven Sprocket Teeth | 37/33 | 37/33 | 35/35 | 33/37 | 37/33
1-2 Upshift Minimum Throttle | 11 mph | 11 mph | 11 mph | 11 mph | 11 mph
1-2 Upshift Wide Open Throttle (WOT) | 48 mph (5700 RPM) | 50 mph (5700 RPM) | 48 mph (5500 RPM) | 48 mph (5700 RPM) | 48 mph (5700 RPM)
2-3 Upshift Minimum Throttle | 21 mph | 21 mph | 20 mph | 20 mph | 20 mph
2-3 Upshift Wide Open Throttle (WOT) | 79 mph (5400 RPM) | 79 mph (5400 RPM) | 92 mph (5700 RPM) | 86 mph (6250 RPM) | 85 mph (5400 RPM)
3-4 Upshift Minimum Throttle | 41 mph | 41 mph | 45 mph | 42 mph | 45 mph
3-4 Upshift Wide Open Throttle (WOT) | 118 mph (PERF) | 118 mph (PERF) | N/A | 115 mph (5150 RPM) | NA/
Minimum TCC Apply -- Third Gear | 28 mph | 28 mph | 28 mph | 24 mph | 28 mph
Minimum TCC Apply -- Fourth Gear | 41 mph | 41 mph | 45 mph | 42 mph | 45 mph
N/V Ratio -- Third Gear/TCC On | 38 | 38 | 39 | 44 | 38
N/V Ratio -- Fourth Gear/TCC On | 27 | 27 | 28 | 31 | 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