FORD 6.9L & 7.3L IDI
7.3L Power Stroke
The 7.3L Power Stroke diesel was developed as a the replacement for the aging 7.3L IDI. Although the engines share identical displacements, the designs are of completely different nature and it would be incorrect to suggest that the 7.3L Power Stroke was an evolution of the IDI engine family. The Power Stroke is a turbocharged, direct injection diesel engine produced by International Navistar. The “Power Stroke” trademark belongs to Ford Motor Company, and therefore you will only find the 7.3 “Power Stroke” in Ford applications. The engine is based on International’s model T444E engine, which is identical save for some slight variances specific to Ford’s applications.