Yes, but the 7.3 Powerstroke is turbocharged (7.3 liters is 445 c.i.). My comments have only been applied to gas engines versus non-turbo diesels.
The original 7.3 diesel that International Harvester made for Ford trucks was built from an existing IH gas truck engine platform. The IH 7.3 liter MV446 gas engine. Used in many school buses.
MV446 IH gas engine has 235 horse at 3600 RPM and 385 lbs. torque at 2600 RPM.
Ford-IH 7.3 non-turbo diesel has 185 horse at 3000 RPM and 360 lbs. torque at 1400 RPM.
Another older truck gas engine IH made with similar size is the 461. It has 226 horse at 3600 RPM and 420 lbs. torque at 1600 RPM.
I've got an early 1994 Ford F250 with the last turbo 7.3 made, before it became a direct-injected Powerstroke 7.3. 190 horse at 3000 RPM and 395 lbs. torque at 1400 RPM.
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