Ford began installing 7.3-liter diesel engines, developed in conjunction with Navistar International, in its trucks in 1988. That first version featured indirect fuel injection, or IDI, and laid the groundwork for the Ford 7.3L Power Stroke, arguably the best diesel engine ever put into a pickup truck. At first, the 7.3 IDI V8, lacking any sort of forced air induction, produced 185 horsepower and 358 lb-ft of torque. However, adding a turbo (IDIT) only increased output to 190 horsepower
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