"Godzilla" Ford V 8
Does anyone know why the new Ford "Godzilla" V8 7.3 liter is rated at 350 HP in a Class C motorhome but 430 HP in a Ford F250 superduty truck? The torque ratings are similar though,
Forum Discussion
Both the 430Hp and 350Hp are the same engines with the same Ford tune. Horsepower is Torque (FTLB) x RPM / 5250. When reading the power at 3900 vs 5500 rpm, the Horsepower is lower. I have a 2022 E-450 Forest River and it has revved beyond 4500 rpm pulling hills. This RV, with no engine modifications, has crested Eisenhower Tunnel at 65 mph without full throttle.
Two things happen at high rpm, first the engine heats up, causing the cooling fan to come on, and second the gas mileage drops quickly. This engine, unlike many truck and car engines doesn't use fuel enrichment for internal cooling.
The engine life, when occasionally operating above 3500 rpm, will likely outlast the RV, especially if you change oil more often than recommended such as at 3750 or 5000 miles.
Two things happen at high rpm, first the engine heats up, causing the cooling fan to come on, and second the gas mileage drops quickly. This engine, unlike many truck and car engines doesn't use fuel enrichment for internal cooling.
The engine life, when occasionally operating above 3500 rpm, will likely outlast the RV, especially if you change oil more often than recommended such as at 3750 or 5000 miles.
