2013 Model Year Cummins vs Power Stroke vs Duramax

Ford, GM, Ram Diesel Comparison

 

 

6.7L Power Stroke, Ford Super Duty

6.7L Cummins, Ram 2500/3500 HD

6.6L Duramax LML, GMC Sierra/Chevrolet Silverado

Engine Manufacturer:

Ford Motor Company

Cummins Inc

DMAX (Isuzu/GM joint venture)

Block/Head Material:

CGI engine block, aluminum cylinder heads

Cast iron engine block, cast iron cylinder heads

Cast iron engine block, aluminum cylinder heads

Configuration:

V-8

Inline 6

V-8

Displacement:

6.7 liters, 409 cid

6.7 liters, 408 cid

6.6 liters, 403 cid

Compression Ratio:

16.2:1

17.3:1

16.8:1

Bore x Stroke:

3.90 x 4.25 inches

4.21 x 4.88 inches

4.06 x 3.90 inches

Injection System:

High pressure common rail

High pressure common rail

High pressure common rail

Aspiration:

Single sequential turbo (DualBoost twin compressor turbo), single VGT introduced 2015 MY

Variable geometry turbocharger (VGT)

Variable geometry turbocharger (VGT)

Valvetrain:

Overhead valve, 4 valves per cylinder

Overhead valve, 4 valves per cylinder

Overhead valve, 4 valves per cylinder

Peak Horsepower:

400 hp @ 2,800 rpm

350 hp @ 2,800 rpm (manual trans)
370 hp @ 2,800 rpm (std, auto trans)
385 hp @ 2,800 rpm (optional HO, auto trans)

397 hp @ 3,000 rpm

Peak Torque:

800 lb-ft. @ 1,600 rpm

660 lb-ft. @ 1,600 rpm (manual trans)
800 lb-ft. @ 1,600 rpm (std, auto trans)
850 lb-ft @ 1,600 rpm (optional HO, auto trans)

765 lb-ft. @ 1,600 rpm

Emissions:

DPF, EGR, SCR (w/ DEF)

DPF, EGR, SCR (w/ DEF)

DPF, EGR, SCR (w/ DEF)

Transmission(s):

6R140 TorqShift 6 speed automatic

G56 6 speed manual, 68RFE 6 speed automatic, Aisin 6 speed automatic (high output engine only)

Allison 1000 6 speed automatic

Max Payload:

7,260 lbs (F-350), 4,240 lbs (F-250)

6,730 lbs (3500), 3,120 lbs (2500)

7,222 lbs (3500), 4,212 lbs (2500)

Max Conventional Tow:

18,500 lbs (F-450 & F-350), 14,000 lbs (F-250)

17,000 lbs (3500), 2500 model N/A at time of publishing

18,000 lbs (3500), 13,000 lbs (2500)

Max 5th Wheel Tow:

24,700 lbs (F-450), 23,200 lbs (F-350), 16,800 lbs (F-250)

29,970 lbs (3500), 17,950 lbs (2500)

23,100 lbs (3500), 17,500 lbs (2500)