The Main Differences Between Ford’s 7.3 Gas & 6.7 Diesel Engines

Ford introduced its 7.3-liter V8 motor to the world in 2020. Dubbed the Godzilla Engine, it was different from most other modern V8s because it was Ford’s first completely new pushrod valve train V8 design in some time.

By avoiding the overhead cam design, popular in today’s performance engines, Ford engineers designed the massive 7.3-liter displacement Godzilla engine to exist in a smaller space. By borrowing technology and materials developed for its turbocharged engine applications, Ford built increased longevity and strength into the 7.3L while keeping it lightweight. Ford claims the 7.3-liter Godzilla engine is “smaller, lighter, provides more torque and hp, plus better fuel economy than its 6.8L predecessor.”

The 7.3-liter Ford V8 features a cast iron block with 4.21-inch (106.93 mm) cylinder bores and aluminum heads with two valves per cylinder and high flow intake and exhaust ports. The forged steel crankshaft, secured by five main bearings, provides 3.98 inches (101.09 mm) of stroke, delivering a 10.5:1 compression ratio. Air induction is naturally aspirated, and fuel delivery is provided by sequential fuel injection. Overall, the engine weighs 580 pounds (263.1 kg) and delivers 430 horsepower at 5,500 rpm and up to 475 lb-ft of torque at 4,000 rpm.

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