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The 2002-2003 Dodge Ram - 1500, 2500, and 3500 Specifications

The 2002-03 Ram was available in regular cab and Quad Cab styles. It was built at Dodge City in Warren, Michigan (1500 only); St. Louis, Missouri; and Saltillo, Mexico. Information courtesy of Dodge.

Engines

3.7 liter "Next Generation" Magnum V-6 (1500 only)

Design Single overhead cam, 12 valves (2 per cylinder); 90° V-6, with balance shaft
Displacement 225.8 cu. in. (3700 cu cm)
Fuel Injection Sequential, multi-port, electronic, returnless
Construction Cast iron block and bedplate, aluminum alloy heads, balance shaft
Compression Ratio 9.1:1
Power 210 bhp (157 kW) @ 5200 rpm (56.8 bhp/L)
230 Ib.-ft. (312 Nom) @ 4000 rpm
Economy 16/21 - manual transmission, 16/20 - automatic

Type and Description

The 3.7 was based on and closely related to the 4.7 V8 engine.

4.7 liter "Next Generation" Magnum V-8 (1500 only)

Design Single overhead cam, 90° V-8
Displacement 287 cu. in. (4701 cu cm)
Fuel Injection Sequential, multi-port, electronic, returnless
Construction Cast iron block and bedplate, aluminum alloy heads
Compression Ratio 9.3:1
Power 235 bhp (175 kW) @ 4800 rpm (50.0 bhp/L)
295 lb.-ft. (400 Nm) @ 3200 rpm
Economy 2WD: 14/19 - manual and automatic transmission; 4WD: 13/18 - manual transmission, 13/17 - automatic transmission

Click here for more details on the 4.7.

5.9 liter "360 LA" Magnum V-8 (1500 only)

Design Overhead valve, 90° V-8
Displacement 360 cu. in. (5895 cu cm)
Fuel Injection Sequential, multi-port, electronic, returnless
Construction Cast iron block and heads
Compression Ratio 8.9:1
Power 245 bhp (183 kW) @ 4000 rpm, (39.0 bhp/liter)
335 lb.-ft. (454 Nm) @ 3200 rpm
Economy 2WD: 12/18; 4WD: 12/16

Ye olde 360 was based on the ancient 273, with updates to the heads, pistons, and fuel delivery systems (as well as other parts, of course). Click here for more details.

5.7-Liter Hemi® Magnum V-8

Design Single overhead cam, 90° V-8
Displacement 345 cu. in. (5654 cu cm)
Fuel Injection Sequential, multi-port, electronic, returnless
Construction Deep-skirt cast iron block with cross-bolted main bearing caps, aluminum alloy heads with hemispherical combustion chambers
Compression Ratio 9.6:1
Power 345 bhp (246 kW) @ 5,600 rpm
365 lb.-ft. (488 Nm) @ 4,400 rpm
Economy 2WD: 14/19 - manual and automatic transmission; 4WD: 13/18 - manual transmission, 13/17 - automatic transmission
Bore and Stroke 3.92 x 3.58 (99.5 x 90.9)
Valve system Pushrod-operated overhead valves, 16 valves, hydraulic lifters with roller followers

Much more information is on this page.

8.0-Liter Magnum® V-10 (2500, 3500 only)

Design Single overhead cam, 90° V-10, 20 valves, hydraulic lifters with roller followers
Displacement 488 cu. in. (7994 cu cm)
Fuel Injection Sequential, multi-port, electronic, returnless
Construction Deep skirt cast iron block, cast iron heads
Compression Ratio 8.6:1
Power 305 bhp (228 kW) @ 4000 rpm - (51.7 bhp/liter)
450 lb.-ft. (597 Nm) @ 2800 rpm
Economy 2WD: 12/18; 4WD: 12/16
Bore and stroke 4.00 x 3.88 (101.6 x 98.6)

5.9-liter Cummins Turbo Diesel (2500, 3500 only)

Type and Description: Six-cylinder, inline, liquid-cooled, turbocharged, intercooled
Displacement: 359 cu. in. (5883 cu cm)
Bore x Stroke: 4.02 x 4.72 (102.1 x 119.9)
Valve System: OHV, 24 valves, solid lifters
Fuel Injection: Electronic high-pressure common rail
Construction: Cast iron block and head
Compression Ratio: 17.2:1
Power (SAE net):

  • 250 bhp (186 kW) @ 2900 rpm - standard output, 49 state manual or 47 RE automatic
  • 235 bhp (175 kW) @ 2700 rpm - standard output, carb, automatic and manual
  • 305 bhp (227 kW) @ 2900 rpm - high-output, 49 state manual

Torque (SAE net):

  • 460 lb.-ft. (624 Nom) @ 1,400 rpm - standard output, manual
  • 460 lb.-ft. (624 Nom) @ 1,400 rpm - standard output, automatic
  • 555 lb.-ft. (752 Nom) @ 1,400 rpm - high output, manual

Transmissions

New Venture 3500 Manual

New Venture was a joint venture of Chrysler and General Motors. The 3500 was used with the Next Generation (3.7 and 4.7) engines. It was synchronized in all gears

Gear Ratios :

1st 4.04
2nd 2.33
3rd 1.39
4th 1.00
5th 0.73
Overall Top Gear Ratio 2.59 w/ 3.55 axle and 2.86 w/ 3.92 axle

45RFE four/five-speed automatic

The 45RFE had a "fifth" kick-down second gear for better performance and smoother operation. The 45RFE had three planetary gear sets, one overrunning clutch, full electronic control, and an electronically controlled converter clutch. This transmission felt better and more efficient than the older four-speed ones. It was optional with the 5.7 Hemi, V6, and 4.7 V8.

Gear Ratios :

1st 3.0
2nd 1.67 - upshift; 1.50 kick-down
3rd 1.00
4th 0.75
Overall Top Gear Ratio 2.66 w/3.55 axle and 2.94 w/3.92 axle

46RE four-speed automatic

This ten year old transmission was used only with the 360 engine, and offered greater hauling capacity. It had hydraulic control, electronically controlled governor, overdrive lockout and converter clutch.

Gear Ratios

1st 2.45
2nd 1.45
3rd 1.00
4th 0.69
Overall Top Gear Ratio 2.45 w3.55 axle and 2.70 w/3.92 axle

NV4500 and NV4500 HD manual five-speed overdrive

This heavy duty transmission was available with the 5.7 V8 and 8.0 V-10 engines; the HD version was standard with the Cummins diesel. It was Availability: NV4500 - standard with 5.7-liter V-8 and 8.0-liter V-10 engines
NV 4500 HD - standard with 5.9-liter standard output I-6 diesel synchronized in all gears.

Gear Ratios:

1st: 5.61
2nd: 3.04
3rd: 1.67
4th: 1.00
5th: 0.75
Reverse: 5.04
Overall Top Gear Ratio: 2.80 with 3.73 axle ratio and 3.07 with 4.10 axle ratio

NV5600 Six-speed overdrive

This transmission was standard with the high-output Cummins.

Gear Ratios:

1st: 5.63
2nd: 3.38
3rd: 2.04
4th: 1.39
5th: 1.00
6th: 0.73
Reverse: 5.63
Overall Top Gear Ratio: 2.72 with 3.73 axle and 2.99 with 4.10 axle

47RE / 48RE four-speed automatics

These older transmissions, introduced in 1994, were heavy duty for the V-10 and standard Cummins (47RE) or heavy duty Cummins (48RE). They had hydraulic control, with electronically controlled governor overdrive, overdrive lockout and converter clutch. 47RE/47RH details

Gear Ratios:

1st: 2.45
2nd: 1.45
3rd: 1.00
4th: 0.69
Overall Top Gear Ratio: 2.57 with 3.73 axle ratio and 2.82 with 4.10 axle ratio

Dimensions and capacities

2500 and 3500 were very similar in most respects.

Ram 1500 QUAD CAB PICKUP
Two-Wheel Drive
Four-Wheel Drive
Box Length 6'3" 8' 6'3" 8'
Wheelbase 140.5 160.5 140.5 160.5
Track, Front 68 68 68 68
Track, Rear 67.4 67.4 67.4 67.4
Overall Length 227.7 249.7 227.7 249.7
Overall Width 79.9 79.9 79.9 79.9
Overall Height 74.1 74.5 76.6 76.4
Fuel Tank Capacity 26 gal (98 L) 35 gal (132 L) 26 gal (98 L) 35 gal (132 L)
Ram 1500 REGULAR CAB PICKUP
Two-Wheel Drive Four-Wheel Drive
Box Length 6'3" 8' 6'3" 8'
Wheelbase 120.5 140.5 120.5 160.5
Track, Front 68 68 68 68
Track, Rear 67.4 67.4 67.4 67.4
Overall Length 207.7 229.7 207.7 229.7
Overall Width 79.9 79.9 79.9 79.9
Overall Height 74.4 74.1 76.6 76
Fuel Tank Capacity 26 gal (98 L) 35 gal (132 L) 26 gal (98 L) 35 gal (132 L)

Suspension

1500

Two wheel drive:

Front: Upper and lower "A" arms, coil springs, gas-charged shock absorbers, stabilizer bar.

Rear: Live axle, longitudinal leaf springs, gas-charged shock absorbers.

Four wheel drive: Same as two wheel drive, except torsion bars used instead of coil springs in front.

2500 and 3500

Two wheel drive:

Front: Short and long arm independent, coil springs, gas-charged shock absorbers, stabilizer bar

Rear: Live axle, longitudinal leaf springs, gas-charged shock absorbers — 2500, auxiliary springs added — 3500

Four wheel drive:

Front: Live axle, "Quadra link" leading arms, track bar, coil springs, stabilizer bar, gas-charged shock absorbers

Rear: Same as two wheel drive

Brakes

1500

Front: 13.2 x 1.1 (336 x 28) vented disc with 2.13 (54) two-piston pin-slider caliper. ABS optional. 292 sq. in. (1884 sq cm) swept area - largest in the class according to Chrysler.

Rear: 13.8 x 0.87 (352 x 22) disc with 2.13 (54) single-piston pin-slider caliper and ABS. 274 sq. in. (1768 sq cm) - largest in the class according to Chrysler.

2500 and 3500

Front: 13.9 x 1.26 vented disc with 2.20 two-piston sliding caliper and ABS; swept Area: 313.2 sq. in. (2021 sq cm)

Rear: 13.9 x 1.18 (352.5 x 30) disc with 1.77 (45) two-piston sliding caliper and ABS. Swept Area: 309.6 sq. in. (1997 sq cm) 309.6 sq. in. (1997 sq cm)

Power Assist Type: Tandem diaphragm vacuum with Single Rear Wheels - gasoline engines.

Transfer cases: NV271/NV273

Availability: NV271 - Standard 4WD ST
NV273 - Standard 4WD SLT Plus
Type: Part Time
Operating Modes: 2WD; 4WD High, Locked; Neutral;
4WD Low, Locked
Shift Mechanism: NV271 - manual, NV273 - electric
Low-Range Ratio: 2.72
Center Differential: None

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