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Dodge RAM 2500 hEAvy Duty 08 Buyer's Manual page 4

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MeeT THe POWeRTRAInS THAT POWeR THe InDUSTRy. START WITH THe LeGenDARy 5.7-LITeR HeMI
V8, WHeRe OnGOInG IMPROVeMenTS jUST keeP COMInG. BULLeTPROOF TRAnSMISSIOnS
COMPLeTe THe PICTURe.
pOWERtRAin/fRAME
histORy AnD lEGEnD tEAM up fOR tOMORROW's
EnGinEERinG. The most recent iteration of the legendary
5.7-liter HeMI
V8 for Ram Heavy Duty pickups now
®
features Variable Valve Timing (VVT), for outstanding fuel
management and performance across the board.
Additional features that make the HeMI V8 the ideal
choice when only a gas engine will do the job:
MORE pOWER. new cylinder heads on the redesigned
HeMI V8 now feature high-flow ports, larger valves and
increased compression ratio; results are measured
directly in performance — with no compromise in fuel
use. It's all about the engineering: The characteristic
hemispherical cylinder heads are what give the legendary
5.7-liter HeMI V8 such clout in the world of trucks — and
now this world-famous engine is better than ever.
No deductible. See dealer for a copy of Limited Warranty details. Non-Transferable. Not available on SRT,
Sprinter, Ram Chassis Cab, Hybrid System components (including transmission), and certain fleet vehicles.
DRivinG thE OthER hAlf Of thE DRivEtRAin:
thE RAM tRAnsMissiOns.
1 6-spEED AutOMAtic. For Ram 2500 and 3500 Heavy
Duty pickups with available Cummins
®
6.7-liter Turbo Diesel.
Here's quality measured in durability. The 6-speed with
electronic Range Select works in concert with the factory-
installed engine exhaust brake, giving outstanding driver
control of rpm and speed — a valuable advantage when
decelerating downhill.
2 6-spEED MAnuAl. This heavy-duty transmission is
standard on all Ram Heavy Duty pickups equipped with the
6.7-liter Cummins Turbo Diesel. The ultralow first gear ratio
— as low as 6.29:1 — is ideal for heavier hauling.
3 5-spEED 545RfE AutOMAtic. Standard on 2500
pickups with the 5.7-liter HeMI V8. A specialized fifth
gear — available as an additional overdrive ratio — helps
provide increased fuel economy and reduced engine
noise at highway speeds. (The fifth gear ratio is 0.67:1 —
a 16 percent reduction in engine rpm relative to the
fourth gear 0.75:1 ratio.)
MORE tORquE. new for the 5.7-liter HeMI V8 is Variable
Valve Timing (VVT), a technology so sophisticated in the
field, it's utilized on Formula One race cars. VVT offers
increased engine breathing throughout the rpm range by
varying the degree that valves open and close in
conjunction with piston position. The advantages are
seen across the board: better performance, more efficient
operation, and measurable increased torque for towing
and hauling demands.
MORE EfficiEncy. The new short runner valve (SRV) active
intake manifold: Here, air intake flow is more efficiently
controlled by changing port length based on engine rpm.
At low speeds, the manifold uses a longer port path for
abundant low-end torque; at higher speeds, the manifold
uses a short port; air moves faster to the combustion
chamber. The SRV manifold contributes to more power and
torque — again, without sacrificing fuel economy.
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3
®
®
diesel vehicles,

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