08 DODGE RAM
POWERTRAIN
THE CUMMINS
®
6.7-LITER TURBO DIESEL. SO GOOD, SO POWERFUL, AND SO CLEAN IT WARRANTS A CLASS OF ITS OWN — AND IT’S ONLY IN A DODGE RAM HEAVY DUTY.
The most recent example of the world-famous Cummins powerplant continues the Cummins history with Dodge Ram — a legacy of pure, driven truck power taking advantage
of an increasingly popular — and today, surprisingly clean — fuel source. By utilizing a high pressure direct-injection fuel system in a Ram Heavy Duty — trucks that now cover
weight classes from the trusted Ram 2500 up to the all-new Ram 5500 Chassis Cab models — Cummins and Ram deliver everything it takes for world-class performance. Torque
is the most critical component for many heavy-duty applications. With the Cummins 6.7-liter, it maxes out at an incredible 650 lb-ft* — as well as offering the best-in-class low-end torque.
†
Horsepower peaks at 350, providing ample acceleration. (In fact, power from the Cummins Turbo Diesel in the Dodge Ram lineup is under Cummins peak performance: the
engine is so extraordinary, it’s actually designed to power much larger Class 6 and Class 7 trucks.) Consider all that Cummins has to offer, and you become part of history in the
making in real time: today, over 1.5 million Cummins equipped Dodge Rams are powering the roads, farms, and industrial sites of the world. What can you expect from Cummins
in your Ram? Count on diesel-specifi c effi ciency. Outstanding performance that defi nes reliability. Longevity that reaches hundreds of thousands of miles. And durability so
impressive, it approaches the inexhaustible. For more, visit dodge.com/ram/cummins — or see for yourself, during your test-drive.
*Requires automatic transmission.
†
Below 1,500 rpm.
1 BUILT-IN LONGEVITY. The engineering calls for
a cast-iron head with hardened nickel-cobalt steel
exhaust valve seats; it’s a combination that adds
to durability.
2 OUTSTANDING FUEL INJECTION. The electronic solenoid
injectors are capable of multiple injections per cycle at
pressures up to 23,000 psi. Result? Precise noise and
emissions control while delivering maximum performance.
3 ULTRA-COOL PERFORMANCE. The gallery-cooled
pistons receive a constant stream of oil for cooler
operation — while the oil itself is simultaneously
cooled by a system of constantly circulating water.
4 SUPER-STRONG CONNECTING RODS. Heavy-duty
commercial-grade connecting rods are forged from
a single mold — a process that adds to strength —
and fracture-split for exacting tolerances.
5 BUILT-IN ECONOMIES. Many parts of the Cummins
6.7-liter focus on longevity — and thus, reduced costs.
Exhaust valves are made of hardened nickel-chromium,
which contributes to long life to overhaul range.
6 VARIABLE GEOMETRY TURBOCHARGER. (VGT) Highly
sophisticated, the VGT here differs radically from Ford
and GM engineering — which both place the turbo on
top of the engine. Side-mounting of the turbocharger
on this inline six-cylinder both simplifies the design
and helps alleviate under-the-hood heat buildup that
can occur with V8 engines.
7 LARGE PISTON BOWL HELPS KEEP THINGS CLEAN.
The large piston bowl is another engineering technique
used to ensure good power and clean emissions. In
fact, based on full-size diesel pickup trucks, the
Cummins offers the cleanest diesel emissions of any.
8 SUPERB BLOCK STIFFNESS. An increase in block
stiffness from the previous design produced multiple
benefi ts: reduced noise, decreased vibration and
less harshness.
9 COMMON-RAIL ARCHITECTURE. PLUS. The
common-rail architecture plus sophisticated electronics
equals signifi cant advantages: multiple injection pulses
and independent control of injection pressures. The
result is noticeably quieter operation and outstanding cold
starting capability — down to -20° F, unaided.
• THE FUEL FILTER: EFFICIENCY BY DESIGN. With fuel
properties and emissions standards rapidly changing,
the fuel fi lter offers higher effi ciency — along with the
capability to handle Ultralow Sulfur Fuel (USLF).
• ADVANCED REQUIREMENTS MET TODAY. The
particulate fi lter is profoundly effective, and is a
major factor in Cummins diesel emissions reduction
Ram 2500 and 3500 pickup models. Reduced
emissions are so important, the 6.7-liter is already able
to meet the stringent truck emissions standards based
on future requirements — for the 2010 model year.
And it meets them in all 50 states.
• FACTORY-INSTALLED EXHAUST BRAKE. Another
advantage to the current Cummins design in Dodge
Ram: it’s the fi rst time an exhaust brake is installed at
the factory. Utilizing the exhaust to aid in braking
power results in a number of signifi cant advantages,
including longer brake life, faster cab warm-up, and
greater vehicle control.
• STRONG ENGINE, STRONG WARRANTY. The limited
warranty coverage is for 5 years or 100,000 miles.
See your Dodge dealer for a copy.
Throw these curves around: a rapidly rising torque “curve”
is composed of straight lines, achieving a long, steady output
up to 650 lb-ft at only 1,500 rpm. Power here is amplifi ed
by increasingly refi ned performance: up to 16,900-lb towing
capacity; the largest bore and stroke in its class; and even
design simplicity, with 30 percent fewer moving parts than
competitive V8 diesels.
350 horsepower @ 3,000 rpm (6-speed automatic) 350 horsepower @ 3,013 rpm (6-speed manual)
650 lb-ft of torque @ 1,500 rpm (6-speed automatic) 610 lb-ft of torque @ 1,400 rpm (6-speed manual)
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