
GENERAL INFORMATION
Body Styles Regular Cab and Quad Cab®
Assembly Plants Saltillo, Mexico
EPA Vehicle Class Heavy-Duty
Recycled plastic and rubber material content Approximately 10%
Recycled metal content Approximately 25%
ENGINE: 6.7-LITER CUMMINS® TURBO DIESEL
Availability Standard – all
Type and Description Six-cylinder, inline, liquid-cooled, turbocharged, intercooled
Displacement 408 cu. in. (6690 cu cm - 6.7L)
Bore x Stroke 4.21 in. x 4.88 in. (107 mm x 124 mm)
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) 305 bhp (227 kW) @ 2900 rpm (51.7 bhp/liter)
Torque (SAE net) 610 lb. ft. (827 N•m) @ 1,600 rpm
Maximum High-Idle Engine Speed 3500 rpm
Fuel Requirement Diesel
Oil Capacity 12 qt. (11.3 L) with lter
Coolant Capacity 22.6 qt. (21.4 L)
Emission Controls Exhaust after-treatment systems and internal engine features
Weight 1122 lbs. (w/manual trans)
2008 DoDge Ram 4500 & 5500
Chassis Cabs speCifiCations ChaRt
1127 lbs. (w/auto trans)
GVWR
4500 Up to 16,500lbs
5500 Up to 19,500lbs
GCWR
4500/5500
GAWR
26,000lbs
4500/5500 Front GAWR 7,000lbs
4500 Rear GAWR 12,000lbs
5500 Rear GAWR 13,500lbs
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2008 DoDge Ram 4500 & 5500
Chassis Cabs speCifiCations ChaRt
TRANSMISSION: AISIN AS68RC – AUTOMATIC, SIX-SPEED OVERDRIVE
Availability Optional
Description
Gear Ratios
1st
2nd
3rd
4th
5th
6th
Reverse
Overall Top Gear Ratio
Weight
TRANSMISSION: G56 – MANUAL, SIX-SPEED OVERDRIVE
Availability
Description
Gear Ratios
1st
2nd
3rd
4th
5th
6th
Reverse
Overall Top Gear Ratio
full electronic control with linear solenoids for all hydraulic applications
One Ravigneaux® and two simple planetary gear sets,
three clutch packs, two brake packs, one overrunning clutch,
5.94
3.74
2.00
1.34
1.00
0.77
0.63
3.54
2.35 with 3.73 axle ratio and 2.58 with 4.10 axle ratio
341.5 lbs. (4x2)
344.6 lbs. (4x4)
Standard – all
Synchronized in all gears
3.28
1.98
1.31
1.00
0.74
5.42
2.95 with 3.73 axle
3.24 with 4.10 axle
TRANSFER CASES – NV271/NV273
Availability
Type
Operating Modes
Shift Mechanism
Low-Range Ratio
Center Differential
Weight
NV271 – std. 4WD ST and 4WD SLT
NV273 – standard 4WD Laramie, opt. 4WD SLT
Part Time
2WD; 4WD High, Locked; Neutral; 4WD Low, Locked
NV271 – manual, NV273 – electric
2.72
None
130 lbs. (all)
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