The 7.3L is offered in 3 power variations; the pickup version is rated at a peak 430 horsepower (475 lb-ft of torque) while the chassis cab features a 350 horsepower (468 lb-ft of torque) version. A specially detuned variant designed for maximizing fuel economy is available in the stripped chassis E-Series, which is rated at 300 horsepower and 425 lb-ft of torque. In F-250, F-350, F-450, and F-550 pickups and chassis cabs the 7.3L V-8 is coupled to the TorqShift 10 speed automatic transmission, while F-650, F-750, and stripped chassis vehicles will continue to use a 6 speed automatic transmission.
Ford 7.3L PFI V-8 Engine Specs
Engine: |
7.3L PFI V-8 |
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Manufacturer: |
Ford Motor Company |
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Applications/Production Years: |
2020+ Ford F-250/F-350 Super Duty |
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Displacement: |
445.33 CID (445 CID nominal), 7.29 liters (7.3 liters nominal) |
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Configuration: |
V-8 |
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Bore: |
4.22 in (107.2 mm) |
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Stroke: |
3.98 in (101 mm) |
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Bore/Stroke Ratio: |
1.06 (slightly oversquare) |
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Compression Ratio: |
10.5 : 1 |
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Firing Order: |
1 - 5 - 4 - 8 - 6 - 3 - 7 - 2 |
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Engine Block Material: |
Cast iron |
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Cylinder Head Material: |
Aluminum alloy |
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Exhaust Manifold Material: |
Stainless steel |
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Injection System: |
High pressure sequential multi-port fuel injection |
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Aspiration: |
Naturally aspirated |
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Reciprocating Assembly: |
Forged steel crankshaft, 5 main bearings |
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Valvetrain: |
2 valves per cylinder (16 valve), OHV, standard cam-in-block pushrod V-8, variable valve timing (VVT), hydraulic roller lifters |
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Engine Oil Capacity: |
8.0 quarts w/ filter |
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Engine Oil Spec: |
Ambient temp > -20° F |
SAE 5W-30 synthetic blend or full synthetic |
Ambient temp < -20° F |
SAE 0W-30 full synthetic |
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Fuel: |
87 octane unleaded gasoline (E85 compatible) |
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Horsepower: |
Super Duty pickup |
430 hp @ 5,500 RPM |
Super Duty chassis cab |
350 hp @ 3,900 RPM |
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E Series stripped chassis |
300 @ 3,750 RPM |
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Torque: |
Super Duty pickup |
475 lb-ft @ 4,000 RPM |
Super Duty chassis cab |
468 lb-ft @ 3,900 RPM |
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E Series stripped chassis |
425 @ 3,250 RPM |
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7.3L Gas V-8 Infographic
Source: Ford Motor Company