Whipple superchargers is reporting progress on a new 7.3L “Godzilla” V8 stage 2 supercharger kit that can produce around 700 horsepower and 750 lb-ft of torque.
The 7.3-liter gas V8 is new in the 2020 Ford Super Duty. From the factory the engine produces 430 hp and 475 lb-ft of torque. It’s mated to a 10-speed automatic transmission.
Whipple is working a new gen-5 3,000 cc twin-screw supercharger that will bolt on to the top of the big engine. The stage 2 also includes a 132 mm oval intake throttle body. This increases the air flow and the company predicts that 700 horsepower is within reach without running a lot of boost (maybe around 8 psi).
The supercharger is said to be well intergraded into the truck, the tow/haul, off-road, and eco modes are preserved for the 10-speed transmission. The transmission is also recalibrated for new-found power.
Does 700 horsepower in an F-250 or a F-350 heavy duty truck sound like a lot? Yes, but you have to remember that Whipple also makes supercharger kits for many other engines and trucks. Their 2018-2020 Ford F-150 5.0-liter “coyote” V8 SC stage2 system is rated at 775 horsepower. This stage 2 F-150 kit currently costs $8,200.
The 2020 Ford Super Duty “godzilla” kit is not ready yet, and the price is not available at the time of this writing. The image you see in this post are prototypes.
This is good news for those who are looking for massive power from their truck. We will keep an eye on this and bring you all the latest information as we get it.
Here is the Whipple Superchargers page with additional information.