![]() The rear suspension retained the leaf spring setup with the Sterling 10.5″ rear differential (Dana 80 in F-350 DRW/F-450 and Dana 135 in F-550 applications). Radius arms and a track bar were incorporated to keep the Dana 60 solid front axle located properly. Beginning in 2005, a new coil spring front suspension was introduced which helped improve the ride on the 2005-2007 pickup trucks. The Super Duty continued to use leaf springs for the front suspension in 20. In 2003, both the 7.3L and 6.0L diesel engines were offered (just as in the Super Duty trucks), due to the mid-year introduction of the 6.0L. The Ford Excursion full-size SUV which debuted in 2000, continued to be offered through 2005. Besides offering one additional gear, this new 5-speed automatic was also stouter and more capable of handling the additional horsepower and torque offered in the 6.0L. ![]() The 4R100 automatic transmission was replaced with the 5R110W TorqShift transmission. For customers that preferred to row their own gears, the ZF S6-650 6-Speed Manual Transmission carried over from the 7.3L and was the standard transmission. With the increased power levels Ford paired the 6.0L Powerstroke with some heavy-duty transmission options. Ford discontinued the use of the 6.0L Powerstroke in their Super-Duty pickups after the 2007 model year, but the engine was still used in E-Series vans up until the 2010 model year. When the 6.0L debuted in 2003, it offered a class-leading 325 hp and 560 lb-ft of torque (570 lb-ft of torque from 2005-2007), which was a 50 hp upgrade over its predecessor. The spool valve allowed for a higher oil pressure output and created a more efficient combustion process. The injectors utilized a spool valve now, instead of the poppet valve used on previous engines. To support all this additional airflow, Ford also upgraded the fuel injection system. At lower RPMs, the housing is more restrictive for better throttle response, and at higher RPMs, the vanes open which allows for improved exhaust flow.Īnother big upgrade was new cylinder heads that featured 4 valves per cylinder (up from the 2 valves per cylinder found in the 7.3L). The VGT is designed so the housing’s size can essentially change depending on the throttle position. The VGT provided increased throttle response by the use of a unison ring and variable vanes. One of the major innovations of the 6.0L Powerstroke was the new Variable Geometry Turbocharger (VGT). Despite all the accolades, the 6.0L Powerstroke still carries a mixed reputation with diesel enthusiasts. All this new technology helped land the 6.0L a spot on the Ward’s 10 Best Engine list for the 2003 model year. Equipped with 4 valves per cylinder, as well as upgrades to the turbocharger and fuel injection system, the 6.0L proved to be more powerful than the 7.3L engine it replaced. This highly innovative and powerful engine offered many new features. Posted on Decemby Jeremy_XDP 0 History/General Infoĭuring the 2003 model year, Ford introduced the all-new 6.0L Powerstroke based on the Navistar International VT365. Buyers Guide, Powerstroke 2003-2007 Ford 6.0L Powerstroke Buyer’s Guide
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