<P> Midway through model year 1998, the Dodge Ram switched from the 6BT to the ISB to meet updated emissions requirements . Like other ISB's, these engines started out using the Bosch VP44 rotary injection pump . The VP44 setup meant that timing and fuel could be precisely controlled, which led to cleaner emissions . However, VP44 failure rates were higher than the older P7100 injection pump . The compression ratio in these engines was 17.2: 1 . The 1998--2000 ISB was rated at 215 horsepower (160 kW; 218 PS) and 420 pound - feet (569 N ⋅ m) when equipped with the 47RE automatic transmission . The 1998 ISB was rated at 235 horsepower (175 kW; 238 PS) and 460 pound - feet (624 N ⋅ m) when equipped with the manual transmission . The 1999--2000 ISB was rated at 235 horsepower (175 kW; 238 PS) and 460 pound - feet (624 N ⋅ m) when equipped with a manual transmission . For the 2001--2002 model years, a standard output and a high output ISB Cummins engine were offered . The standard output, which was the same as the previous engines was rated to 235 horsepower (175 kW; 238 PS) and 460 pound - feet (624 N ⋅ m) when equipped with either a manual transmission or automatic . The high output ISB was rated at 245 horsepower (183 kW; 248 PS) and 505 pound - feet (685 N ⋅ m), with only a NV5600 six - speed manual transmission available . The high output engine was different in a few ways from the standard output engine; it had higher compression (17.1: 1), powdered metal valve seat inserts, a larger flywheel, the Bosch fuel system was reworked to allow higher fuel flows, and fuel - injection timing was altered . </P> <P> For the 2003 model year, the Cummins was introduced with Bosch high pressure common rail fuel injection, again increasing power output . On automatic equipped vehicles, the 47RE was upgraded internally to increase durability and torque capacity, now known as the 48RE . The 2003 rating for the Dodge truck was released at 305 horsepower (224 kW; 308 PS) and 555 foot - pounds (752 N m). Midway through the 2004 model year, the Cummins 600 was introduced, producing 325 horsepower (242 kW; 330 PS) at 2,900 rpm and 600 pound - feet (813 N ⋅ m) at 1,600 rpm . This engine was noticeably quieter than the previous engines . </P> <Table> <Tr> <Th_colspan="2"> Cummins ISB 6.7 L </Th> </Tr> <Tr> <Th_colspan="2"> Overview </Th> </Tr> <Tr> <Th> Manufacturer </Th> <Td> Cummins </Td> </Tr> <Tr> <Th> Also called </Th> <Td> ISBe </Td> </Tr> <Tr> <Th> Production </Th> <Td> 2007--present </Td> </Tr> <Tr> <Th_colspan="2"> Layout </Th> </Tr> <Tr> <Th> Configuration </Th> <Td> I6 diesel engines </Td> </Tr> <Tr> <Th> Displacement </Th> <Td> 6,690 cc </Td> </Tr> <Tr> <Th> Cylinder bore </Th> <Td> 107.0 mm </Td> </Tr> <Tr> <Th> Piston stroke </Th> <Td> 124.0 mm </Td> </Tr> <Tr> <Th> Cylinder block alloy </Th> <Td> Iron </Td> </Tr> <Tr> <Th> Cylinder head alloy </Th> <Td> Iron </Td> </Tr> <Tr> <Th_colspan="2"> Combustion </Th> </Tr> <Tr> <Th> Turbocharger </Th> <Td> Holset Engineering </Td> </Tr> <Tr> <Th> Fuel system </Th> <Td> Direct injection (Common rail) </Td> </Tr> <Tr> <Th> Management </Th> <Td> Electronic </Td> </Tr> <Tr> <Th> Fuel type </Th> <Td> Diesel </Td> </Tr> <Tr> <Th> Oil system </Th> <Td> Wet sump </Td> </Tr> <Tr> <Th> Cooling system </Th> <Td> Water - cooled </Td> </Tr> <Tr> <Th_colspan="2"> Output </Th> </Tr> <Tr> <Th> Power output </Th> <Td> 309 - 355 PS </Td> </Tr> <Tr> <Th_colspan="2"> Dimensions </Th> </Tr> <Tr> <Th> Dry weight </Th> <Td> 1100 lbs </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Cummins ISB 6.7 L </Th> </Tr>

What size turbo does a 6.7 cummins have