Hypertech POWER PROGRAMMER III - Page 18

17
NOTE: These tables are for general reference ONLY.
Vehicles will vary slightly depending on tire
height and accuracy of the tachometer.
GM VEHICLE
AUTOMATIC TRANSMISSION SHIFT TABLES
(30” Tire Height)
REAR GEAR RATIO 2.73:1
1-2 SHIFT 2-3 SHIFT 3-4 SHIFT
1 MPH =
1 MPH = 1 MPH =
94 RPM 50 RPM 31 RPM
REAR GEAR RATIO 3.08:1
1-2 SHIFT 2-3 SHIFT 3-4 SHIFT
1 MPH =
1 MPH = 1 MPH =
105 RPM 56 RPM 34 RPM
REAR GEAR RATIO 3.23:1
1-2 SHIFT 2-3 SHIFT 3-4 SHIFT
1 MPH =
1 MPH = 1 MPH =
111 RPM 59 RPM 36 RPM
REAR GEAR RATIO 3.42:1
1-2 SHIFT 2-3 SHIFT 3-4 SHIFT
1 MPH =
1 MPH = 1 MPH =
117 RPM 62 RPM 38 RPM
REAR GEAR RATIO 3.73:1
1-2 SHIFT 2-3 SHIFT 3-4 SHIFT
1 MPH =
1 MPH = 1 MPH =
128 RPM 68 RPM 42 RPM
REAR GEAR RATIO 4.10:1
1-2 SHIFT 2-3 SHIFT 3-4 SHIFT
1 MPH =
1 MPH = 1 MPH =
141 RPM 75 RPM 46 RPM
REAR GEAR RATIO 4.56:1
1-2 SHIFT 2-3 SHIFT 3-4 SHIFT
1 MPH =
1 MPH = 1 MPH =
156 RPM 83 RPM 51 RPM