The 1999 7.3 Powerstroke produced 235 horsepower and 500 lb-ft torque, while the 2000 7.3 Powerstroke saw improvements reaching 275 HP and 525 lb-ft, thanks to updated fuel injectors and engine management. These diesel engines, found in trucks like the Ford F350 7.3 Powerstroke, are known for reliability and towing strength. Regular maintenance tips include monitoring the CPS sensor, changing oil frequently, using quality fuel filters, and addressing injector issues early to maintain performance and longevity across model years through 2003.