While Ford has concentrated on the Modular engine concept for multiple decades, that engine also suffers from several limitations—not the least of which is bore spacing which puts a boundary on displacement. Demand has pushed Ford to build a completely new V8 engine displacing 7.3 liters (445ci) using a traditional two-valve per cylinder, cam-in-block pushrod arrangement.

The engine has been nicknamed the “Godzilla” engine for obvious reasons.

And Ford Performance Parts makes it available for engine swaps!
Click here to see the Ford 7.3L Godzilla Crate Engine.

(Image/Ford Performance Parts)

Ford Godzilla 7.3L Engine Specs

Identifying the Ford 7.3L Godzilla Engine by VIN
VIN Position 8KFor All Medium & Heavy Duty Trucks
VIN Position 8NEverything Else
Ford Godzilla 7.3L Engine Performance Specs
Displacement7.3L, 445ci
Compression Ratio 10.5:1
Horsepower (Stock)430 hp at 5,500 rpm
Torque (Stock)475 lb.-ft. at 4,050 rpm
Ford Godzilla 7.3L Engine Applications
2020+F-250, F-350, F-550, F-650, F-750, E-350 & E-450
2021+F-59 Chassis
Ford Godzilla 7.3L Engine Block Specs
Block Casting NumberRFLC3E-6015-JB
Material Iron, Deep Skirt & Siamesed Cylinders
Bore Diameter4.22"
Deck Height9.650"
Bore Spacing4.530"
Thrust Bearing Location Number 3 Main
Main Cap Style 4 Bolts with 2 Lateral Cross Bolts
Cam-to-Crank Centerline 5.433"
Bellhousing Bolt Pattern5.0L - 4.6L - 5.4L
Ford Godzilla 7.3L Engine Rotating Assembly Specs
Piston Material Hypereutectic Aluminum
Piston Style 1.5mm, 1.2mm, 2.5mm
Connecting Rod MaterialPowdered Metal, Fractured Cap
External Torx Head on Rod Bolts
Connecting Rod StyleI-Beam
Connecting Rod Length 6.319"
Connecting Rod Wrist Pin Dia.0.990"
Connecting Rod Big End Dia.2.236"
Crankshaft MaterialForged Steel
Crankshaft Main Journal Dia.2.660"
Crankshaft Rod Journal Dia.2.086"
Crankshaft Reluctor Count58x
Crankshaft Mounting Flange8 Bolts
Ford Godzilla 7.3L Engine Cylinder Head Specs
Casting NumberLH07 T869Q
Combustion Chamber Volume62.4cc
Intake Port ShapeRectangular Oval
Exhaust Port ShapeRound
Intake Valve Diameter2.17"
Exhaust Valve Diameter1.67"
Cylinder Head Bolt StyleTorque to Yield (TTY)
Cylinder Head Bolt Size13mm
Ford Godzilla 7.3L Engine Camshaft Specs
Cam Duration @ 0.050"201 (Intake) / 212 (Exhaust)
Valve Lift 0.539" (Intake) / 0.595" (Exhaust)
Variable Valve Timing (VVT)Yes
Cam Journal Diameter60mm
Ford Godzilla 7.3L Engine Valvetrain Specs
Lifter StyleHydraulic Roller
Lifter Link StylePlastic Holder
Lifter Diameter0.842", Nitrided Axle
Number of Cam Journals5
Rocker Arm Mounting StyleDie Cast, Roller Fulcrum
Rocker Ratio 1.8:1
Rocker Arm OffsetNone
Valve Spring StyleBeehive
Valve Angle8.8 Degrees
Timing Chain Guide StyleSingle Chain with 2 Separate Tensioners
Ford Godzilla 7.3L Engine Throttle Body, Fuel Injector Specs & More
Intake ManifoldComposite, Port Injection with Throttle Body Angled Up
Throttle Body Diameter 80mm
Throttle Body ControlElectronic
Fuel Injector Flow35 lbs./hr.
Fuel Injector ConnectorUSCAR
Camshaft Sensor LocationFront Timing Cover, VVT Gear
Oil PumpGerotor, Variable Displacement
Chain-Driven by Jackshaft
Oil Capacity8 Quarts
Firing Order1-5-4-8-6-3-7-2
Piston Cooling JetsYes
Weight540 lbs.
Dimensions23.5" Wide at Top of Valve Covers
Ford Performance Crate PNM-6007-73

Author: Jeff Smith

Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. In 1987, he assumed the role of editor for Hot Rod magazine before returning to his first love of writing technical stories. Since 2003, Jeff has held various positions at Car Craft (including editor), has written books on small block Chevy performance, and even cultivated an impressive collection of 1965 and 1966 Chevelles. Now he serves as a regular contributor to OnAllCylinders.