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Digger_717
07-16-2007, 12:19 AM
2007 Dodge Ram Heavy Duty Cummins 6.7-liter Turbo-diesel Engine Details

Engine
6.7L 107mm bore x 124mm stroke
High swirl (2.4 DCS) combustion system
17.2:1 Compression ratio
Machined crankshaft counter weights
Viscous vibration damper

Air Handling
VGT - sliding nozzle (16 vane to eliminate turbine blade pass whistle)
Cooled EGR with cold-side EGR valve
Air inlet throttle
EGR cooler bypass
CCV with coalescing filter

Oil system
Tested with low ash oil API CJ4 (PC10)
Drain interval - 7500 miles
Total capacity - 13 qts on initial fill
Sump capacity - 9 qts low, 11 qts high
Typical oil change capacity - 12 qts
Dump to sump to provide oil pressure quicker
Constrained layer oil pan to reduce transmitted noise

Fuel system
Bosch 3rd generation common rail system
7 micron spin on filter
Tested with ultra low sulfur fuel - 15 ppm
Approved for bio-diesel fuel

Cooling system
Molded composite impeller for improved coolant flow

Electronics
CM2100 ECM
Double the CPU processing speed (40 to 80 MHz)
40% increase in memory

NVH
Constrained layer oil pan
Over running alternator pulley (eliminate shut down squeal)
Intake silencer
Machined crankshaft counter weights
Combustion system (multi injection events)
Block shields
Pulleys modified to reduce 'speaker' effect
Stuffer between transmission adapter and pan
Viscous vibration damper

Specifications

ENGINE: 6.7-LITER HIGH OUTPUT CUMMINS TURBO DIESEL I-6
Availability ---- Opt. - 2500, 3500; available Jan. 1, 2007
Type and Description ---- Six-cylinder, inline, liquid-cooled,
turbocharged, intercooled
Displacement ---- 408 cu. in. (6690 cu. cm)
Bore x Stroke ---- 4.21 x 4.88 (107 x 124)
Valve System ---- OHV, 24 valves, solid lifters
Fuel Injection ---- Electronic high-pressure common rail
Construction ---- Cast-iron block and head
Compression Ratio ---- 17.3:1
Power (SAE net) ---- 350 bhp (261 kW) @ 3,000 rpm
Torque (SAE net) ---- 650 lb.-ft. (881 N*m) @ 1,500 rpm w/6-spd.
automatic;
610 lb.-ft. (827 N*m) @1,400 rpm w/6-spd. manual
Maximum High-idle Engine Speed ---- 3,500 rpm
Fuel Requirement ---- Ultra Low Sulfur Diesel
Oil Capacity ---- 12 qt. (11.3L) with filter
Coolant Capacity ---- 29.5 qt. (28.0L)
Emission Controls ---- Exhaust after-treatment systems and internal engine
features

TRANSMISSION: 68RFE ORION-AUTOMATIC, SIX-SPEED
Availability ---- Opt. with 6.7L turbo diesel engine; available Jan. 1,
2007
Description ---- Three planetary gear sets, one overrunning clutch, full
electronic control, electronically controlled converter
clutch
Gear Ratios
1st ---- 3.231
2nd ---- 1.837
3rd ---- 1.410
4th ---- 1.0
5th ---- 0.816
6th ---- 0.625
Reverse ---- 4.444
Overall Top Gear Ratio ---- 2.33 with 3.73 axle ratio; 2.56 with 4.10 axle
ratio




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