Navistar T444E engine

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Navistar T444E
Manufacturer Navistar International
Also called Ford PowerStroke diesel
Production 1994-2003
Combustion chamber
Configuration V8
Displacement 444 cu in (7.3 L)
Cylinder bore 104.4 millimetres (4.11 in)
Piston stroke 106.2 millimetres (4.18 in)
Fuel system direct injection
Fuel type Diesel
Power output 185 hp (138 kW)-275 hp (205 kW)
Torque output 350 lb·ft (475 N·m)-525 lb·ft (712 N·m)
Predecessor International Harvester IDI
Successor Navistar VT365
Ford 6.0L PowerStroke V8

The T444E is a Diesel V8 engine manufactured by Navistar International Corporation. It was used by Ford Motor Company, branded the Ford Power Stroke engine, from 1994 through 2003, replacing an earlier 7.3 L indirect-injection V8 from Navistar. It was replaced in 2003.5 (After December 31, 2002) by the 6.0 L VT365.

The T444E used a 104.4 mm (4.1 in) bore and 106.2 mm (4.2 in) stroke. Power output was 215 hp (160 kW) at 3000 rpm and 425 lb·ft (576 N·m) at 1600 rpm for 1994-1997. Power was increased in 1999 to 235 hp (175 kW) at 2600 rpm and 500 lb·ft (678 N·m) of torque at 1600 rpm. in 2002 power was up to 250 hp (186 kW) at 2700 rpm and 525 lb·ft (712 N·m) of torque at 1600 rpm in automatics and 275 hp (205 kW) in manuals. International built nearly 2 million 7.3 L Power Stroke V8s for Ford at their Indianapolis, Indiana plant before switching to the 6.0. Federal emission laws are the main reason the 7.3L was discontinued.

The 6.0 was also discontinued in 2007 when it was replaced by International's 6.4 liter. Not long after in 2010 the 6.4 liter was replaced by Ford's first in house Super Duty diesel truck engine, the 6.7 liter Power Stroke. This ended the partnership between International and Ford for light duty diesel engines in the Super Duty pickups.


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