Ford Godzilla engine

This article is about the gasoline V8. For the older 6.9L and 7.3 L Diesel V8s sold by Navistar International earlier, see International Harvester IDI and Navistar T444E engine.

The Ford Godzilla engine is a family of V8 engines offered by the Ford Motor Company. The engines are intended to replace the Modular V10 engine and the Boss V8 engine in many uses.^[1][3] The engine, first introduced with a displacement of 7.3L was first used with Ford Super Duty trucks starting with the 2020 model year and was later added to the Ford E-Series for the 2021 model year.^[3][4] It is also available as a crate engine.^[5] A smaller displacement 6.8L was introduced in 2023. Exterior dimensions are smaller than the 385-series 460 engine, and slightly larger than those of the 351 Windsor engine.^[6]

Ford Godzilla engine
Overview
Manufacturer	Ford Motor Company
Production	2020–present
Layout
Configuration	Naturally aspirated 90° V8
Displacement	6.8 L (415.0 cu in) 7.3 L (444.9 cu in)[1][2]
Cylinder bore	4.22 in (107.2 mm)[1][3]
Piston stroke	3.68 in (93.5 mm) 3.976 in (101.0 mm)[1][3]
Cylinder block material	Cast iron[3]
Cylinder head material	Aluminum[3]
Valvetrain	OHV (2 valves × cyl.)[1][3][4][2]
Compression ratio	10.8:1 10.5:1[3]
Combustion
Fuel system	MPFI[3]
Fuel type	Gasoline[1][3][4][2]
Output
Power output	300 hp (224 kW) at 3,750 rpm (7.3 Economy, E-350/450) 325 hp (242 kW) at 3,750 rpm (7.3 Premium, E-350/450) 335 hp (250 kW) at 3,750 rpm (7.3, F-53/F-59, F-650/750 2023–present) 350 hp (261 kW) at 3,900 rpm (7.3, F-53/F-59 & Chassis Cab 2020–21, F-650/750 2020–22) 405 hp (302 kW) at 5,000 rpm (6.8, Super Duty) 430 hp (321 kW) at 5,500 rpm[1][2][3][4] (7.3, Super Duty 2020–22) 430 hp (321 kW) at 5,500 rpm (7.3, Super Duty 2023–present)
Torque output	425 lb⋅ft (576 N⋅m) at 3,250 rpm (7.3 Economy, E-350/450) 445 lb⋅ft (603 N⋅m) at 4,000 rpm (6.8, Super Duty) 450 lb⋅ft (610 N⋅m) at 3,750 rpm (7.3 Premium, E-350/450) 468 lb⋅ft (635 N⋅m) at 3,750 rpm (7.3, F-53/F-59, F-650/750 2023–present) 468 lb⋅ft (635 N⋅m) at 3,900 rpm (7.3, F-53/F-59 & Chassis Cab 2020–21, F-650/750 2020–22) 475 lb⋅ft (644 N⋅m) at 4,050 rpm[1][2][3][4] (7.3, Super Duty 2020–22) 485 lb⋅ft (658 N⋅m) at 4,000 rpm (7.3, Super Duty 2023–present)
Chronology
Predecessor	Ford 385 engine Modular V10[1][3] Ford Boss engine

Attributes

• Camshaft: Variable valve timing
• Piston: Hypereutectic aluminum alloy
• Connecting rod: Cracked powdered metal
• Crankshaft: Forged
• Knock sensors from the Ford Boss engine
• Siamesed cylinders with saw cuts between cylinders to increase cooling capacity
• Variable oil pump for fuel economy^[7]

Because the engine uses overhead valves actuated by pushrods, it is smaller than many of the overhead camshaft Ford Modular engines, and can be fitted to older cars.^[7]

Variable tuning

Ford offers several different ratings of the engines that can prioritize either performance or economy. Performance-oriented tunings are intended as a replacement for the Modular V10 engine, while economy-oriented tunings replace the Boss V8 engine.

The highest current state of tune, offered on the Ford Super Duty (F-250/350/450) pickup trucks, offers 430 horsepower (321 kW) at 5,500 RPM and 475 pound-feet (644 N⋅m) of torque at 4,000 RPM.^[3]

For the largest Super Duty trucks (F-550/600) and the medium-duty Ford F-650/750 trucks, the engine is de-tuned to 335 hp (250 kW) at 3,750 RPM, but with more torque, 468 lb⋅ft (635 N⋅m) at 3,750 RPM.^[4]

The E-Series offers two versions that were de-tuned even further. The "premium-rated" version generates 325 hp (242 kW) and 450 lb⋅ft (610 N⋅m) of torque at 3,750 RPM, while the "economy-rated" variant produces 300 hp (224 kW) and 425 lb⋅ft (576 N⋅m) of torque at 3,250 RPM. The "economy-rated" variant was discontinued for 2024.^[8]

6.8L variant

A short-stroked 6.8L version has been introduced in the revamped 2023 Ford Super Duty as a replacement for the predecessor's 6.2L SOHC Boss V8. It is available only in the F-250 and F-350 pickups with the XL trim.

For 2024, the 6.8L gained flex-fuel capability.

Common applications

• 2020–present Ford Super Duty (F-250/350/450/550/600) (2023-present for 6.8 L)
• 2020–present Ford F-650/750
• 2021–present Ford E-Series (E-350/450)
• 2020–present Ford F-53 Motorhome Stripped Chassis
• 2020–present Ford F-59 Commercial Stripped Chassis
• 2021–present Blue Bird Vision school bus