BODY
Construction/materials Fully boxed steel frame under-cab, and C-channel aft-of-cab made from high-strength steel, aluminum bed and cab Body style Body-on-frame Trim levels
XL, XLT, Lariat
Final assembly location
Kentucky Truck Plant, Ohio Assembly Plant
DRIVETRAIN
Standard layout Front engine, rear drive
Optional layout
Front engine, 4x4 (electronic-shift-on-the-fly transfer case)
ENGINES
6.2-liter V8
7.3-liter V8
6.7-liter Power Stroke® V8 diesel Configuration
90-degree V8, single overhead cam
90-degree V8, single in-block cam
90-degree V8 diesel, single turbocharger, in-block cam and overhead valves
Block/head material Cast iron block, aluminum heads Cast iron block, aluminum heads Compacted graphite iron block, aluminum heads
Displacement    6.2 liters (379 cubic inches)7.3 liters (445 cubic inches)  6.7 liters (406 cubic inches)Bore x stroke    4.02 inches x 3.74 inches    4.22 inches x 3.98 inches    3.9 inches x 4.25 inches Compression ratio 9.8:1
10.5:1
15:8:1
Valvetrain
Two valves per cyliner, roller  rocker shaft Pushrod and rocker arms,  two valves per cylinder Pushrod and rocker arms,  four valves per cylinder Recommended fuel 87 octane/E85
87 octane
Ultra-low sulfur diesel/B20Fuel delivery
Sequential multi-port electronic Sequential multi-port electronic High-pressure common rail Engine control system Electronic
Electronic
Electronic
Intake manifold
Naturally aspirated, tuned intake Naturally aspirated, tuned intake Variable geometry turbocharger with charge air cooler Dyno certified horsepower 385 @ 5,750 rpm 350 @ 3,900 rpm 330 @ 2,600 rpm Dyno certified torque 430 lb.-ft. @ 3,800 rpm 468 lb.-ft. @ 3,900 rpm 825 lb.-ft. @ 2,000 rpm Oil life monitor
oil life monitor®
oil life monitor®
Intelligent oil life monitor®
2021 FORD F-SERIES SUPER DUTY ®
CHASSIS CAB
TRANSMISSION
TorqShift® 10-speed heavy duty automatic transmission with SelectShift™
Configuration Aluminum 10-speed, available
live-drive access on driver side
Aluminum 10-speed, live-drive
access on driver side
Aluminum 10-speed, live-drive
access on driver side
Engine  6.2-liter V87.3-liter V8  6.7-liter Power Stroke V8 Gear ratios:
First  4.615:1  4.615:1  4.615:1
Second  2.919:1  2.919:1  2.919:1
Third  2.132:1  2.132:1  2.132:1
Fourth  1.773:1  1.773:1  1.773:1
Fifth  1.519:1  1.519:1  1.519:1
Sixth  1.277:1  1.277:1  1.277:1
Seventh1:11:11:1
Eighth0.851:10.851:10.851:1
Ninth0.687:10.687:10.687:1
Tenth0.632:10.632:10.632:1
Reverse-4.695:1-4.695:1-4.695:1 WHEELS
Type Steel or aluminum
Size17-inch SRW/DRW, 18-inch SRW F-350; 19.5-inch F-450/F-550
Number of studs Eight F-350; 10 F-450/F-550
Bolt circle diameter 6.7-inch F-350 SRW
7.87-inch F-350 DRW
8.86-inch F-450/F-550
BRAKES
Type Four-wheel vented-disc, ABS (standard)
Front (rotor diameter)14.29-inch (363 millimeter) F-350
15.39-inch (391 millimeter) F-450/F-550
Rear (rotor diameter)14.29-inch (363 millimeter) F-350
15.75-inch (400 millimeter) F-450/F-550
STEERING
Assist Power hydraulic
PASSENGER AND FUEL CAPACITIES
Seating capacity (maximum)Regular Cab SuperCab CrewCab
Three Six Six
Midship fuel tank capacity, SRW F-350
with 68D payload downgrade package
26.5 gallons26.5 gallons26.5 gallons
Aft-of-axle fuel tank capacity SRW F-350/
DRW F-350/F-450/F-550; with 68D
payload downgrade on SRW F-350 package
40 gallons40 gallons40 gallons Fuel capacity DRW – dual diesel tanks66.5 gallons66.5 gallons66.5 gallons
PAYLOAD PACKAGE SELECTOR (LBS.)