
1 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
2012 Ram 2500/3500 Heavy Duty
SPECIFICATIONS
All dimensions are in inches (millimeters) unless otherwise noted.
All dimensions measured at curb weight with standard tires and wheels.
Regular Cab, Crew Cab and Mega Cab
Saltillo Assembly Plant - Coahuila, Mexico
ENGINE: 5.7-LITER HEMI® V-8
Standard on 2500 Series Models
(a)
Eight-cylinder, 90-degree V-8, liquid-cooled with
variable-valve timing (VVT)
343 cu. in. (5654 cu. cm)
3.92 x 3.58 (99.5 x 90.9)
Pushrod-operated overhead valves, 16 valves, hydraulic lifters with roller
followers
Sequential, multi-port, electronic, returnless
Deep-skirt cast-iron block with cross-bolted main bearing caps,
aluminum alloy heads with hemispherical combustion chambers
383 bhp (286 kW) @ 5,600 rpm, 2500 series
(b)
400 lb.-ft. (542 N•m) @ 4,000 rpm, 2500 series
Unleaded mid-grade, 89 octane (R+M)/2—recommended
Unleaded regular, 87 octane (R+M)/2—acceptable
Dual three-way catalytic converters, internal engine features with
knock sensors
(b)
(a) Not available on 3500 Series Pickup models.
(b) All manual transmission equipped vehicles meet LEV I chassis-certified emission requirements in California, New York, Massachusetts,
Maine and Vermont. Meets Tier 2 HDV 1, 2 chassis-certified emission requirements in 45 remaining states.
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.

2 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
ENGINE: 6.7-LITER HIGH OUTPUT CUMMINS® TURBO DIESEL I-6
Six-cylinder, inline, liquid-cooled, turbocharged, intercooled
408 cu. in. (6690 cu. cm)
OHV, 24 valves, solid lifters
Electronic high-pressure common rail
350 bhp (261 kW) @ 3,000 rpm
650 lb.-ft. (881 N•m) @ 1,500 rpm
Torque (Automatic SAE net)
800 lb.-ft. (881 N•m) @ 1,500 rpm
Maximum High-idle Engine Speed
12.0 qt. (11.3L) with filter
No diesel exhaust fluid required
180-amp included with Snow Plow Prep Package
Standard—2500 and 3500 with gasoline engines
Group 65, maintenance-free, 600 CCA
Standard—All with diesel engines; included in Heavy Duty Snow Plow and
Trailer-tow Groups
Group 65, maintenance-free, 750 CCA

3 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
TRANSMISSION: G56—MANUAL SIX-SPEED OVERDRIVE
Standard with 6.7-liter High-output Diesel
Synchronized in all gears
Gear Ratios ( 6.7L Diesel)
5.42 TRANSMISSION: 66RFE—AUTOMATIC SIX-SPEED
Standard with 5.7-liter engines on 2500 series models
Three planetary gear sets, one overrunning clutch, full electronic control,
electronically controlled converter clutch
2.33 with 3.73 axle ratio; 2.56 with 4.10 axle ratio, 2.85 with 4.56 axle ratio
TRANSMISSION: 68RFE—AUTOMATIC SIX-SPEED
Optional with 6.7L Cummins Turbo Diesel engine
Three planetary gear-sets, one overrunning clutch, full electronic control,
electronically controlled converter clutch
2.33 with 3.73 axle ratio; 2.56 with 4.10 axle ratio

4 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
TRANSFER CASES: NV271/NV273
NV271—Standard 4WD ST
NV273—Standard Laramie; Optional SLT
2WD; 4WD High; Neutral; 4WD Low
NV271—manual; NV273—electric

5 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
2012 Ram 2500 Heavy Duty
DIMENSIONS AND CAPACITIES
REGULAR CAB 140.5"WB 8' 0" BOX SRW
Overall Width @ SgRP Front
Suspension or Axle to Ground – Front
Suspension or Axle to Ground – Rear
CREW CAB 149.5"WB 6' 4" BOX SRW
Overall Width @ SgRP Front
Suspension or Axle to Ground – Front
Suspension or Axle to Ground – Rear
27.0 CREW CAB 169.5"WB 8' 0" BOX SRW
Overall Width @ SgRP Front
Suspension or Axle to Ground – Front
Suspension or Axle to Ground – Rear

6 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
MEGA CAB 160.5"WB 6' 4" BOX SRW
Overall Width @ SgRP Front
Suspension or Axle to Ground – Front
Suspension or Axle to Ground – Rear
6 ft. 4 in. (Crew or Mega)
SAE Volume, cu. ft. (cu m)
Length at Floor, Tailgate Closed – in. (mm)
Distance Between Wheelhouses – in. (mm)
Tailgate Opening Width in. – (mm)

7 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
Longitudinal, front engine
Longitudinal, front engine, transfer case
Ladder-type frame, steel cab, doublewall steel pickup box
Ladder-type frame, steel cab, doublewall steel pickup box
Upper and lower “A” arms, coil
springs, stabilizer bar
Five-link with track bar, coil springs,
stabilizer bar, solid axle
Hotchkiss leaf spring suspension,
solid axle
Hotchkiss leaf spring suspension,
solid axle
Wheelbase (nominal) – in. (mm)
Turning Diameter – ft. (m)
(a)
Wheelbase (nominal) – in. (mm)
Turning Diameter –ft. (m)
(a)
Wheelbase (nominal) – in. (mm)
Turning Diameter – ft. (m)
(a)
(a) Turning diameter is measured at the outside of the tires at curb height. Turning diameters and steering wheel turns, lock-to-lock may differ
with optional tires and wheels.
Rotors 14.17 x 1.54-in. disc with twin-piston pin-slider caliper and ABS
Rotors 14.09 x 1.34-inch disc with
twin-piston pin-slider caliper and ABS
Dual-rate, tandem diaphragm vacuum (gas)

8 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
2012 Ram 3500 Heavy Duty
DIMENSIONS AND CAPACITIES
REGULAR CAB 140.5"WB 8' 0" BOX DRW
Overall Width @ SgRP Front
Suspension or Axle to Ground – Front
Suspension or Axle to Ground – Rear
CREW CAB 149.5"WB 6' 4" BOX SRW
Overall Width @ SgRP Front
Suspension or Axle to Ground – Front
Suspension or Axle to Ground – Rear
27.7 CREW CAB 169.5"WB 8' 0" BOX SRW
Overall Width @ SgRP Front
Suspension or Axle to Ground – Front
Suspension or Axle to Ground – Rear

9 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
CREW CAB 169.5"WB 8' 0" BOX DRW
Overall Width @ SgRP Front
Suspension or Axle to Ground – Front
Suspension or Axle to Ground – Rear
26.3 MEGA CAB 160.5"WB 6' 4" BOX SRW
Overall Width @ SgRP Front
Suspension or Axle to Ground – Front
Suspension or Axle to Ground – Rear
MEGA CAB 160.5"WB 6' 3" BOX DRW
Overall Width @ SgRP Front
Suspension or Axle to Ground – Front
Suspension or Axle to Ground – Rear

10 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
SAE Volume, cu. ft. (cu m)
Length at Floor, Tailgate Closed – in. (mm)
Distance Between Wheelhouses – in. (mm)
Tailgate Opening Width in. – (mm)
Longitudinal, front engine
Longitudinal, front engine, transfer case
Ladder-type frame, steel cab,
double-wall steel pickup box
Ladder-type frame, steel cab, double-wall steel pickup
box

11 / RAM 2500/3500 HEAVY DUTY SPECIFICATIONS http://media.chrysler.com
Upper and lower “A” arms,
coil springs, stabilizer bar
Five-link with track bar, coil springs, stabilizer bar,
solid axle
Hotchkiss leaf spring
suspension, solid axle
Hotchkiss leaf spring suspension, solid axle
Wheelbase (nominal) – in. (mm)
Turning Diameter – ft. (m)
(a)
Wheelbase (nominal) – in. (mm)
Turning Diameter –ft. (m)
(a)
Wheelbase (nominal) – in. (mm)
Turning Diameter – ft. (m)
(a)
(a) Turning diameter is measured at the outside of the tires at curb height. Turning diameters and steering wheel turns, lock-to-lock may differ
with optional tires and wheels.
Rotors 14.17 x 1.54-in. disc with twin-piston pin-slider caliper and
ABS
Rotors 14.09 x 1.34-in. disc with
twin-piston pin-slider caliper and ABS
Dual-rate, tandem diaphragm vacuum (gas)