Ford 7.3 Godzilla Engine: Specs, Crate Engine and Swap Guide
The Ford 7.3L “Godzilla” is a large-displacement gasoline V8 that Ford introduced in its Super Duty trucks. It is a pushrod (overhead-valve) engine with a cast-iron block, rated at 430 horsepower and 475 lb-ft of torque in Super Duty pickup tune. Its simple, rugged design and big displacement have made it a popular crate engine for swaps and high-performance builds.
Ford 7.3 Godzilla specs
| Specification | 7.3L Godzilla |
|---|---|
| Displacement | 7.3 liters (about 445 cubic inches) |
| Layout | V8, pushrod (overhead valve) |
| Block | Cast iron |
| Bore x stroke | 107.2 mm x 101.0 mm (4.220″ bore) |
| Rated output (Super Duty pickup) | 430 HP and 475 lb-ft |
| Ford Performance crate engine | Rated at 430 HP |
Output varies by application. Chassis-cab versions, for example, are tuned for lower peak power, so check the rating for the exact engine you are looking at.
Why the Godzilla is popular for swaps
- Displacement: 7.3 liters gives strong low-end torque without forced induction.
- Simple, durable design: the pushrod layout and cast-iron block are built for heavy-duty truck use.
- Room to grow: the engine is a common base for supercharged and high-output builds, and Ford Performance also offers higher-output versions.
Ford Performance 7.3L Godzilla crate engine
We stock the Ford Performance 7.3L V8 Super Duty crate engine (part number M-6007-73, rated at 430 HP). It is a new, factory-built engine, sold with Ford’s specification sheet. For a custom build starting from the bottom end, the Ford Performance 7.3L Godzilla engine block is the bare cast-iron block with a 4.220-inch bore.
Browse all Coyote and Godzilla crate engines to compare it with the 5.0L Coyote, which makes similar power in a smaller, overhead-cam package.
What a 7.3 Godzilla swap involves
- Engine control: the Godzilla is electronically controlled and needs a compatible control pack and wiring harness.
- Fitment: it is a large engine, so check hood height, firewall clearance, engine mounts and oil pan clearance before you buy.
- Transmission: plan the bellhousing and transmission early, because the bolt pattern and torque output decide what will survive.
- Fuel and cooling: it needs an EFI-capable fuel system and a radiator sized for a big-displacement engine.
- Legal use: emissions rules vary by state and vehicle, so make sure the swap is legal where the vehicle is registered.
Godzilla vs Coyote
The 7.3L Godzilla is a pushrod V8 with more displacement and a cast-iron block. The 5.0L Coyote is a smaller, all-aluminum, dual-overhead-cam V8 that revs higher. Both are offered as Ford Performance crate engines. The Godzilla suits builds that value torque and simplicity, while the Coyote suits lighter cars and high-revving builds. See our Ford Coyote engine guide for Coyote specs.
Frequently asked questions
How much horsepower does the 7.3 Godzilla make?
In Super Duty pickup tune it is rated at 430 HP and 475 lb-ft. The Ford Performance 7.3L crate engine we sell is rated at 430 HP.
Is the 7.3 Godzilla a big block?
It is a large-displacement pushrod V8 and is often compared with classic big blocks, but it is a modern Ford design rather than a member of the older 385-series (429/460) big block family.
Is the 7.3 Godzilla a diesel?
No. The 7.3L Godzilla is a gasoline engine. It shares its displacement figure with Ford’s older 7.3L Power Stroke diesel, which is a completely different engine. See gas vs diesel engines for how the two types differ.
How much does a 7.3 Godzilla engine weigh?
Ford Performance’s part page for the M-6007-73 7.3L 430 HP crate engine lists an engine weight of 580 lbs. The page doesn’t say which components that figure includes.
Planning a swap? See also what a crate engine is and long block vs short block.
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