response, large-block gasoline V8 engines (such as the Ford 460) were withdrawn from production from pickup trucks and full-size vans. For the 1983 model year, Ford entered into a supply agreement with International Harvester to use the newly introduced IDI diesel V8 for and 1-ton F-Series pickups and E-Series vans. While roughly matching the output of the discontinued 400 cubic-inch V8 (the engine that it replaced alongside a reintroduced 460), the 6.9L diesel offered fuel economy closer to the standard 4.9L inline-6. While originally developed for the S1700 medium-duty truck, the engine supply agreement brought a diesel engine to market faster (and at far lower cost) than developing an engine from the ground up. In 1988, as International phased out the 6.9L engine, Ford received the 7.3L IDI diesel. During 1994 production, the IDI was replaced by the all-new T444E; to emphasize the introduction of direct injection fuel delivery, Ford began to brand International-sourced engines under the "PowerStroke" branding. As with the IDI, the T444E/PowerStroke was used in F-Series/E-Series trucks and vans. During 2003 production, the Ford Super Duty line and the E-Series adopted the VT365, replacing the T444E. For 2008, the MaxxForce 7 was introduced for the Super Duty pickups as a PowerStroke engine; in place of a variable-geometry turbocharger (used by International trucks), Ford versions of the engine were fitted with compound turbochargers. As the 6.4L engine would not properly fit in the vehicle, the E-Series continued use of the 6.0L diesel. After the 2010 model year, Ford ended the use of International-supplied diesel engines. From 2011 onward, the Super Duty was fitted with diesel engines developed by Ford; the E-Series shifted production exclusively to gasoline-based engines. Today, Ford continues the use of the PowerStroke branding, using it for multiple diesel engines produced by the company. Blue Diamond Truck In September 2001, Navistar announced a joint venture with Ford, named Blue Diamond Truck Co. LLC. A 50/50 agreement between the two companies, Blue Diamond was intended to develop and manufacture vehicles and powertrains for both companies using the International facility in General Escobedo, Mexico. In 2004, Blue Diamond Truck launched production. While sharing a common frame, the Ford F-650 and F-750 Super Duty were produced with different bodywork and powertrains than the International 4200/4300. In 2006, Blue Diamond released the Ford LCF/International CF, the first model line developed under the joint venture. To create the low-cab COE, the