Truck Trend is the source for official specifications, payload, towing capacity, and other information that matters to real truck users. Check out the latest info for the 2010 Dodge Ram 2500 Heavy Duty Mega Cab with short-box, 2WD & 4WD options. Read the complete specs on the 5.7-LITER HEMI EAGLE V-8 and 6.7-LITER CUMMINS TURBO DIESEL I-6 power plant.


2010 Dodge Ram 2500 Heavy Duty Mega Cab
SPECIFICATIONS
* All dimensions are in inches (millimeters) unless otherwise noted.
* All dimensions measured at curb weight with standard tires and wheels.
GENERAL INFORMATION
Body Styles Mega Cab, Short-box
Assembly Plants Saltillo, Mexico
EPA Vehicle Class Standard Pickup
DIMENSIONS AND CAPACITIES
Mega Cab 160.5"WB 6' 4" Box SRW
  4x2 4x4
Wheelbase 160.5 160
Track Width - Front 68.6 68.3
Track Width - Rear 68.2 68.2
Overall Length 248.4 248.4
Overall Width @ SgRP Front 79.1 79.1
Overall Height 74.1 78.3
Suspension or Axle to Ground - Front 7.8 8.1
Suspension or Axle to Ground - Rear 7.8 7.7
Approach Angle 14 23.4
Ramp Breakover Angle 15.8 18.3
Departure Angle 24.2 27.6
ENGINE: 5.7-LITER HEMI EAGLE V-8 6.7-LITER High Output CUMMINS TURBO DIESEL I-6
Availability Standard on 2500 Series Models(a) Optional on 2500.
Standard on 3500 Series
Type and Description Eight-cylinder, 90 V-type, liquid-cooled with variable cam timing (VVT) Six-cylinder, inline, liquid-cooled, turbocharged, intercooled
Displacement 343 cu. in. (5654 cu. cm) 408 cu. in. (6690 cu. cm)
Bore x Stroke 3.92 x 3.58 (99.5 x 90.9) 4.21 x 4.88 (107 x 124)
Valve System Pushrod-operated overhead valves, 16 valves, hydraulic lifters with roller followers OHV, 24 valves, solid lifters
Fuel Injection Sequential, multi-port, electronic, returnless Electronic high-pressure common rail
Construction Deep-skirt cast-iron block with cross-bolted main bearing caps, aluminum alloy heads with hemispherical combustion chambers Cast-iron block and head
Compression Ratio 9.6:1 17.3:1
Power (SAE net) 383 bhp (286 kW) @ 5,600 rpm, 2500 Series(b) 350 bhp (261 kW) @ 3,000 rpm
Torque (SAE net) 400 lb.-ft. (542 N*m) @ 4,000 rpm, 2500 Series 650 lb.-ft. (881 N*m) @ 1,500 rpm
Max. Engine Speed 5,800 rpm 3,500 rpm
Fuel Requirement Unleaded mid-grade, 89 octane (R+M)/2--recommended
Unleaded regular, 87 octane (R+M)/2--acceptable
Ultra Low Sulfur Diesel
Oil Capacity 7 qt. (6.6L) 12 qt. (11.3L) with filter
Coolant Capacity 18.7 qt. (17.7L) 29.5 qt. (28.0L)
Emission Control Dual three-way catalytic converters, internal engine features with knock sensors (b) Exhaust after-treatment systems and internal engine features

• Ram 2500 and 3500 models equipped with automatic transmission and sold in 45 states meet Tier 2 HDV 1, 2 chassis-certified emission requirements. Ram 2500 models equipped with automatic transmission and sold in California, New York, Massachusetts, Maine and Vermont meet LEV II--MDV 1 category chassis-certified emission requirements. Ram 3500 models equipped with automatic transmission and sold in California, New York, Massachusetts, Maine and Vermont meet LEV II--MDV 2 category chassis-certified emission requirements.
TRANSMISSION: 545RFE-- AUTOMATIC FIVE-SPEED
Availability Standard with 5.7-liter engines on 2500 Series models
Description Three planetary gearsets, one overrunning clutch, full electronic control, electronically controlled converter clutch
Gear Ratios ( 6.7L Diesel)
1st 3
2nd 1.67--upshift; 1.50--kickdown
3rd 1
4th 0.75
5th 0.67
6th 3
Reverse 2.50 with 3.73 axle ratio; 2.75 with 4.10 axle ratio; 2.14 with 3.42 axle ratio
TRANSMISSION: G56--MANUAL SIX-SPEED OVERDRIVE
Availability Standard with 6.7-liter High Output Diesel
Description Synchronized in all gears
Gear Ratios ( 6.7L Diesel)
1st 5.94
2nd 3.28
3rd 1.98
4th 1.31
5th 1
6th 0.74
Reverse 5.42
TRANSMISSION: 68RFE--AUTOMATIC Six-SPEED
Availability Optional with 6.7L Cummins Turbo Diesel engine
Description Three planetary gearsets, one overrunning clutch, full electronic control, electronically controlled converter clutch
Gear Ratios
1st 3.231
2nd 1.837
3rd 1.41
4th 1
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
ELECTRICAL SYSTEM
Alternator
Availability Standard--All
Rating 160 amp
Availability Optional
Rating 180 amp included with Snow Plow Prep Package
Battery
Availability Standard--2500 and 3500 with gasoline engines
Description Group 65, maintenance-free, 600 CCA
Availability Standard--All with diesel engines; included in Heavy Duty Snow Plow and Trailer Tow Groups
Description Group 65, maintenance-free, 750 CCA
TRANSFER CASES: NV271/NV273
Availability NV271--Standard 4x4 ST
NV273--Standard Laramie; Optional SLT
Type Part-time
Operating Modes 2WD; 4WD High; Neutral; 4WD Low
Shift Mechanism NV271--manual; NV273--electric
Low-range Ratio 2.72
Center Differential None