Ram 2500 Heavy Duty · Elgin CDJR · Streamwood, IL
Ram 2500 Horsepower
How much horsepower does the Ram 2500 have? Here are the two engines Ram lists for the 2027 Ram 2500 and 3500 Heavy Duty, from Ram's specification and feature availability sheets.
405 hp6.4-liter HEMI V8, standard
429 lb.-ft.HEMI V8 torque
430 hp6.7-liter Cummins High Output, optional
1,075 lb.-ft.Cummins High Output torque
The short answer
Ram's 2027 Ram 2500 and 3500 Heavy Duty spec sheet lists two engines. The 6.4-liter HEMI V8 makes 405 hp at 5,600 rpm and 429 lb.-ft. at 4,000 rpm, and the feature sheet lists it as standard on every 2027 Heavy Duty trim. The 6.7-liter Cummins turbo diesel I-6 High Output makes 430 hp at 2,800 rpm and 1,075 lb.-ft. at 1,800 rpm, and is optional on every model.
2027 Ram 2500 horsepower and torque
Ram's 2027 sheets cover the 2500 and 3500 Heavy Duty together. Both engines below are listed for the Heavy Duty lineup:
| Engine | Availability | Horsepower | Torque |
|---|---|---|---|
| 6.4-liter HEMI V8 | Standard on all models | 405 hp @ 5,600 rpm | 429 lb.-ft. @ 4,000 rpm |
| 6.7-liter Cummins turbo diesel I-6 (High Output) | Optional on all models | 430 hp @ 2,800 rpm | 1,075 lb.-ft. @ 1,800 rpm |
Power and torque from Ram's 2027 Ram 2500 and 3500 Heavy Duty specifications (spec sheet 27355); availability from the 2027 Heavy Duty feature availability sheet (27337), Engine / Transmission, read November 11, 2026. Ram says specifications are based on the latest product information available at the time of publication.
Transmissions and gearing
Both engines use an eight-speed TorqueFlite HD automatic with Electronic Range Select (ERS) manual control:
| Engine | Transmission | Axle gear ratios |
|---|---|---|
| 6.4-liter HEMI V8 | TorqueFlite HD 8HP75 eight-speed automatic | 3.73, 4.10 |
| 6.7-liter Cummins High Output | TorqueFlite HD 8AP1075 eight-speed automatic | 3.42 |
The sheet lists the part-time BW 44-46 electric-shift transfer case as optional with the HEMI, and the 44-48 part-time electric-shift transfer case with the diesel High Output. Both have a 2.64 low-range ratio.
From Ram's 2027 Ram 2500 and 3500 Heavy Duty specifications (spec sheet 27355), Transmission and Transfer Case, read November 11, 2026.
Engine details
More from the 2027 spec sheet for each engine:
| Specification | 6.4-liter HEMI V8 | 6.7-liter Cummins High Output |
|---|---|---|
| Type | 90-degree gasoline V8 with variable cam timing | Inline six-cylinder, turbocharged, intercooled diesel |
| Displacement | 392 cu. in. (6,417 cu. cm) | 408 cu. in. (6,690 cu. cm) |
| Compression ratio | 10.0:1 | 16.2:1 |
| Maximum engine speed | 5,800 rpm limited | 3,200 rpm max. high-idle |
| Fuel requirement | Unleaded regular, 87 octane | Ultra-low sulfur diesel |
| Oil capacity | 7.0 quarts (6.6 liters) | 12.0 quarts (11.3 liters) with filter |
| Emission controls | Includes three-way catalytic converters, heated oxygen sensors and cooled EGR | Selective catalytic reduction (SCR) |
Ram also lists brake power assist by engine: dual-rate tandem diaphragm vacuum on the 2500 gas, and Hydro-boost on the 2500 diesel and all 3500 models.
From Ram's 2027 Ram 2500 and 3500 Heavy Duty specifications (spec sheet 27355), read November 11, 2026. Your own truck's labels and owner's manual are the authority for your vehicle.
Ram 2500 service at Elgin CDJR
Our Ram service center works on Ram 2500 HEMI and Cummins trucks. Our service department is open Monday to Friday 7 a.m. to 7 p.m. and Saturday 7:30 a.m. to 4 p.m., and is closed Sunday. Get directions.
Ram 2500 Horsepower FAQ
How much horsepower does a Ram 2500 have?
Ram's 2027 Heavy Duty spec sheet lists 405 hp for the standard 6.4-liter HEMI V8 and 430 hp for the optional 6.7-liter Cummins turbo diesel High Output.
How much torque does the Ram 2500 Cummins make?
The 2027 sheet lists 1,075 lb.-ft. at 1,800 rpm for the 6.7-liter Cummins turbo diesel I-6 High Output.
What is the standard engine in the Ram 2500?
The 6.4-liter HEMI V8 (405 hp, 429 lb.-ft.), listed as standard on every 2027 Ram 2500 and 3500 Heavy Duty trim on Ram's feature availability sheet.
Does the Ram 2500 HEMI need premium gas?
No. Ram lists unleaded regular, 87 octane, for the 6.4-liter HEMI V8.
What transmission comes with the Cummins?
The TorqueFlite HD 8AP1075 eight-speed automatic, with a 3.42 axle gear ratio, per Ram's 2027 spec sheet.
What are your service hours?
Monday to Friday 7 a.m. to 7 p.m. and Saturday 7:30 a.m. to 4 p.m. We are closed Sunday.
Bring your Ram 2500 to Streamwood
Visit Elgin CDJR at 1500 W. Lake St. in Streamwood.
Sources
Engine, horsepower, torque, transmission and fuel figures are from Ram's 2027 Ram 2500 and 3500 Heavy Duty specification and feature availability sheets on the Stellantis North America media site, read November 11, 2026. Our service hours are from our own website, checked the same day. Photo is illustrative.
- 2027 Ram 2500 and 3500 Heavy Duty specifications (spec sheet 27355), Stellantis North America media site (Ram), read November 11, 2026
- 2027 Ram 2500 and 3500 Heavy Duty feature availability (sheet 27337), Stellantis North America media site (Ram), read November 11, 2026
- Ram service center page: service hours, Elgin CDJR, read November 11, 2026