The Second Generation Ford Diesel

By increasing the cylinder bore of the 6.9L from 4 inches to 4.11 the iconic 7.3L motor was created. The 7.3L motor replaced the 6.9L in 1988. The 7.3L was naturally aspirated just like its predicessor until 1993 when a turbocharged version of the IDI engine was introduced. Before the introduction of the turbo the 7.3L was identical the the 6.9L in every aspect except the cylinder bore and power output. The non-turbocharged 7.3L made 185 hp and 360 lb-ft of tourqe, and the turbocharged 7.3L made 190 hp and 388 lb-ft of tourqe.
With the reliability and power of the 7.3L it continued the legacy that the 6.9L started. Its production ended in 1993.