Engine Comparison for Class 4–5 Trucks

Product Image
Family Name MaxxForce™ 5 MaxxForce™ 7
Configuration V6 V8
Displacement 4.5L (275 cu. in.) 6.4L (390 cu. in.)
Power Output 200 hp (149 kW) @ 2,700 rpm 200-230 hp (149 - 171 kW) @ 2,600 rpm
Peak Torque English 440 lb.-ft.(596 Nm) @ 1,800 rpm 560-620 lb.-ft. (759 - 840 Nm) @ 1,400 rpm
Aspiration Turbocharged, air to air intercooled Electronically-controlled turbocharging with charge-air cooler
Combustion System Direct Injection Direct Injection
Bore And Stroke 3.74 in x 4.134 in 3.87 in. (98.2 mm) x 4.134 in. (105 mm)
Compression Ratio 18:0:1 17.5:1
B10/B50 Life 250,000/408,500 miles 262,500/375,000 miles
Dry Engine Weight 805 lbs. 1,160 lbs.