HP = (Torque x RPM) / 5252
Therefore, 400 horsepower could represent many different torque values depending on the engine's RPM. A high-revving engine might produce 400 hp with relatively low torque, while a low-revving engine could produce the same horsepower with significantly higher torque.
To illustrate:
* High-RPM Engine: An engine making 400 hp at 8000 RPM would have approximately 262 lb-ft of torque.
* Low-RPM Engine: An engine making 400 hp at 4000 RPM would have approximately 525 lb-ft of torque.
You need to know the engine speed (RPM) at which the 400 horsepower is produced to calculate the torque.