Ford Authority

Ford’s 7.3-Liter Godzilla V8 Hits The Dyno: Video

We already know that Ford is cramming the giant 7.3-liter Godzilla V8 under the hood of the Ford F-Series Super Duty trucks as an option. The standard engine is still the Ford 6.2-liter V8 that has been the largest displacement gas engine for the last several years. Ford also still offers diesel power in the Super Duty range.

Ford rates the 7.3-liter Godzilla V8 at 430 horsepower and 475 pound-feet of torque. All that torque comes down low in the rpm range peaking at 4,000 rpm. Many like to know what an engine offers at the wheels and if the automaker is quoting the true power or not. The only way to do this is to take the vehicle to a dyno and then account for power loss in the drive train.

A 2020 Ford F-250 Tremor packing that 7.3-Liter engine has been strapped to the dyno to see just how much power gets to the rear wheels of the truck. This appears to be the first video on YouTube that shows a dyno run for Godzilla. It’s worth noting that some math was employed since the big trucks are speed limited to get the ideal gear for testing.

Before strapping, the Godzilla to the dyno, the lightly modified F-250 with the older 6.2-liter was tested, and it put down 335 horsepower and 369 pound-feet of torque at the wheels. The intake and exhaust on the truck are said to have very minimal impact on performance. Once Godzilla is strapped to the dyno, we get to see what Ford cooked up.

The 2020 F-250 Tremor with the 7.3-liter V8 made 358 horsepower and 407 pound-feet of torque on the dyno. It’s worth noting that the truck hit its speed limiter at 90 mph.

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Shane is a car guy with a fondness for Mustangs and off-roading.

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  1. CrabbyMilton

    That’s impressive and it should do well in the heavy and commercial market. I wonder if BLUEBIRD will adopt that engine in their VISION model. They use the V10 now for gasoline and propane. I never owned a FORD with that V10 but rode in several FORD based shuttle buses and gosh that engine is smooth and very distinct sound. I’ll miss it.

  2. trailhiker

    This gas V-8 will be such an important engine for Ford’s future.
    Diesel engines are great, but whole regions are going to start regulating them even more, making them more expensive and maybe dropping performance. Diesel fuel will also be reformulated, and who knows how what performance and MPG penalties that will cause.

  3. steve ketterer

    This monster 7.3 V8 is a slam-dunk for Ford and nicely bridges the gap between the 6.2 and the 6.7 Powerstroke. Meanwhile the GM 6.6 gas engine has been panned in the media for being thirsty and a lackluster performer.


    Who is the idiot who wrote this artlcle? saying that max torque comes in at a LOW 4,000 RPM is stupid. EG: The Ford 6.8 liter 10 cylinder and also the 5.4 liter V8, both had max torque below 3,000 RPM, one was at just 2500 RPM and another was at 2800 RPM but changed from year to year where the max torque peaked. Guys, this truck as a 10 speed transmission. There is not even ONE good reason that this 2020 gasser of 7.3 liters, should ever rev over 3000 RPM with 10 forward gears in normal driving. Why even bother developing a 10 speed tranny if you are not going to take advantage of it? The camshaft is too hot for a work truck or towing if you can’t get max torque below 3000 RPM. Ford should save everyone the agrivation and put a label on the truck, “IF TOWING MORE THAN 3000 POUNDS, USE MID GRADE GASOLINE, OR E85 GASOLINE TO GET THE BEST PERFORMANCE AND MPG. ALSO USE ONLY A FULL 100 PERCENT SYNTHETIC OIL OF AT LEAST 10W30 OR 10W40 OR 15W40, SO THE ENGINE WILL RUN COOLER AND ALSO GIVE MAX POWER” This will give the best performance without the engine knocking or pinging under a heavier than normal load and it will keep both the water and engine and transmission oil temperature down and extend the life of the transmission. Guys, my fleets since 1981, have run on high octane LPG propane and also CNG natural gas and also diesel, with over 25 million miles on these commercial trucks and cars. The lower the max torque, THE BETTER THE MPG. IT’S THAT SIMPLE.

  5. Wally1

    On the rollout of any new engine I research it. This appears to a good engine but there are some real concerns. The chain driven variable vane oil pump, this is a really bad design, They even use a plastic oil pickup screen, yes, Plastic!. This engine has a real stout bottom end but that means nothing when the plastic falls apart and pieces go through the vane pump causing catastrophic engine failure. Of course this happens once it is out of warranty and you are screwed. Big fail. This engine also has variable cam timing, Ford cam phaser design which was also used on the overhead cam trident and other engines. These fail mostly at about 100,000 miles, On the Godzilla this is buried inside the engine so when it fails and it will, big repair costs. A semi solid block deck with head bolts holding down aluminum heads, Different block and head materials ,cause different expansion and contraction rates, I suspect head gasket issues down the road. I could go on, time will tell. Remember, none of the manufacture’s do extensive testing anymore, these days the consumer Is the tester, It is cheaper that way. Just my opinion from working on this stuff for 50 years.


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