Dodge Ram 1500
Engine: 5.0L Cummins 90-degree V-8
*At least 320 hp and 500 lb-ft
*Aluminum heads and an iron block
*Exhaust gas recirculation (EGR)
*Cummins-built variable geometry turbo located in the engine valley
*Catalytic converter and diesel particulate filter (DPF)
*Common-rail fueling with piezo injectors
*Engine weight 710 pounds
*Selective catalytic reduction (SCR) through the use of liquid urea
*Chain-driven single overhead camshafts
*Six-speed automatic 655RFE transmission
*10 1/2-inch ring gear diameter in the semi floating AAM rear axle
MPG: (Diesel Power December 2006 issue titled, "New Cummins V-6 and V-8") A Department of Energy test found the 1/2-ton Ram delivered 24.6 mpg
Ford F-150
Engine: 4.4L 60-Degree V-8
*310 hp and 516 lb-ft
*Acceleration similar to a 5.4L gas engine
*Common-rail fueling with piezo injectors
*Twin turbo arrangement
*Catalytic converter and diesel particulate filter (DPF)
*Compacted graphite iron engine block
*Selective catalytic reduction (SCR) through the use of liquid urea
*Belt-driven camshafts
*Six-speed ZF automatic transmission
*9 3/4-inch ring gear and seven-lug wheels similar to the semi-floating rear axle of 7700 series F-250
*According to a poster secretly filmed at a closed viewing, the diesel engine is said to have 20% better fuel mileage compared to the 5.4L gas engine
 More than likely, the diesel...  More than likely, the diesel option will come with specific styling features. These may include a widened grille and bumper openings for increased cooling, and possibly unique hoods with bulges. |  Another change in styling...  Another change in styling that will come with the diesel option is a result of the urea injection. Since its tank's filler is next to the diesel tank's filler, the new fuel lids will be larger to accommodate both openings. |  Keep an eye out for the cooling...  Keep an eye out for the cooling dual exhaust tips. |