<P> Replacing the overhead - valve engines used in previous F - Series models, for the Super Duty, Ford transitioned to the Triton overhead - cam engine family (truck versions of the Ford Modular engines). </P> <P> At its launch, the standard engine in the Super Duty was a Triton V8 . Producing 255 hp / 350 lb - ft of torque, the SOHC 16 - valve V8 was shared with the F - 150 and Ford E-Series . During 1999, the engine was retuned to 260 hp . In 2005, the cylinder heads were redesigned to 3 - valve design, converting it to a 24 - valve V8; output was increased to 300 hp / 365 lb - ft of torque . </P> <P> As a replacement for the long - running 7.5 L / 460 V8, for the Super Duty, Ford introduced a Triton V10 . A SOHC 20 - valve engine, the V10 produced 310 hp / 425 lb - ft of torque . In 2005, the V10 would also receive 3 - valve cylinder heads, increasing its output to 362 hp / 457 lb - ft of torque . </P> <P> Both the V8 and V10 Triton engines are designed with a fail - safe cooling system to protect the engine in case of major coolant loss . If the engine overheats, the engine will operate on half of its cylinders . Alternating back and forth between each set of 4 (or 5) pistons, the set that is not receiving fuel and ignition is operating to pump air through the engine to lower its temperature . Although engine output is limited, dependent on upon vehicle load, outside temperature, and current road conditions, the system is designed to allow the vehicle to travel a short distance to obtain service or to reach a repair facility . </P>

1999 ford f250 super duty 7.3 diesel towing capacity