Here is the gear ratio breakdown for all three variants of the PowerLine in the 2025 Ram Heavy Duty and Chassis Cab trucks:
Ram 2500/3500 Pickup
Transmission: ZF TorqueFlite HD 8AP1075 — Automatic Eight-Speed
Availability: 6.7-liter I-6 Cummins turbo diesel
Description:
- Adaptive electronic control, automatic or Electronic Range Select (ERS) manual control
- Five clutch-pack design with only two open clutches in any gear
- Torque converter lock with turbine torsional damper for low lock-up speeds in 1st through 8th gear
Gear Ratios:
- 1st: 4.71
- 2nd: 3.14
- 3rd: 2.10
- 4th: 1.67
- 5th: 1.29
- 6th: 1.00
- 7th: 0.84
- 8th: 0.67
- Reverse: 3.30
Axle Gear Ratio: 3.42
Ram Chassis Cab -
Transmission: ZF 8AP430 TorqueFlite HD — Automatic Eight-Speed
Availability: 6.4-liter HEMI V-8
Description:
- Adaptive electronic control, automatic or Electronic Range Select (ERS) manual control
- Five clutch-pack design with only two open clutches in any gear
- Torque converter lock with turbine torsional damper for low lock-up speeds in 1st through 8th gear
Gear Ratios:
- 1st: 4.89
- 2nd: 3.12
- 3rd: 2.03
- 4th: 1.64
- 5th: 1.27
- 6th: 1.00
- 7th: 0.84
- 8th: 0.67
- Reverse: 3.30
Axle Ratios:
- 3.42 (3500)
- 4.44 (4500 and 5500)
Transmission: ZF 8AP850 TorqueFlite HD — Automatic Eight-Speed
Availability: 6.7-liter I-6 Cummins turbo diesel
Description:
- Adaptive electronic control, automatic or Electronic Range Select (ERS) manual control
- Five clutch-pack design with only two open clutches in any gear
- Torque converter lock with turbine torsional damper for low lock-up speeds in 1st through 8th gear
Gear Ratios:
- 1st: 4.89
- 2nd: 3.12
- 3rd: 2.03
- 4th: 1.64
- 5th: 1.27
- 6th: 1.00
- 7th: 0.83
- 8th: 0.64
- Reverse: 4.25
Axle Ratios:
- 4.10 (3500)
- 4.44 (4500 and 5500)