Specs for 2008 Chevrolet 3500DRW

Changes this model year:
unknown

Engines

Engine 6.0L V8 6.6L V8
Fuel Gas Diesel
Valvetrain OHV 2V OHV 4V
Block composition Iron Iron
Head composition Aluminum Aluminum
Bore / Stroke 4.00 x 3.62 4.06 x 3.90
Horsepower 322hp 365hp
Horsepower (rpm) 4400rpm 3200rpm
Torque 380lb-ft 660lb-ft
Torque (rpm) 4200rpm 1600rpm
Notes LMM
Years in common 2008 - 2015 2008 - 2010

Transmissions

Transmission Allison 1000 6L90
Speeds 6 6
Type Automatic Automatic
Gear ratio 1 3.10 4.03
Gear ratio 2 1.81 2.36
Gear ratio 3 1.41 1.53
Gear ratio 4 1.00 1.15
Gear ratio 5 0.71 0.85
Gear ratio 6 0.61 0.67
Gear ratio reverse 3.06

Transfer Case

Model Type Low Range Ratio Case Material Notes
MP1226 Chain 2.61 Aluminum Manual shift
MP1626 Chain 2.61 Aluminum Electric shift

Axle Ratios

Engine Transmission Standard axle ratio Optional axle ratios Notes
6.6L V8
6.0L V8 6L90

Interior Dimensions

Cab Type Headroom (F/R) Hiproom (F/R) Legroom (F/R) Shoulder room (F/R) Volume (F/R)
Crew 41.2 / 40.5 62.5 / 65.4 41.3 / 39.0 65.2 / 65.1
Regular 41.4 / na 62.5 / na 41.3 / na 65.2 / na
Super 41.2 / 39.2 62.5 / 61.8 41.3 / 34.3 65.2 / 65.3

Exterior Dimensions

Drive Cab Type Bed length (cab-to-axle for chassis cab) Wheelbase Length Width Height Liftover height Open tailgate to ground Turning circle (curb to curb) Rear axle clearance Approach angle Departure angle Ramp breakover angle Fuel capacity Base curb weight GVWR
4x4 Regular 8 ft 133.0in 224.7in 95.9in 76.7 43.7ft 7.6 34.0gal 6093lb 11400lb
4x2 Extended 8 ft 157.5in 249.2in 95.9in 76.0 52.5ft 7.6 34.0gal 6273lb 11400lb
4x4 Extended 8 ft 157.5in 249.2in 95.9in 75.9 52.5ft 7.6 34.0gal 6537lb 11400lb
4x2 Crew 8 ft 167.0in 258.7in 95.9in 76.0 55.1ft 7.6 34.0gal 6421lb 11400lb
4x4 Crew 8 ft 167.0in 256.2in 95.9in 76.1 55.1ft 7.6 34.0gal 6694lb 11400lb

Axles & Driveline

Drive Front axle type Front axle identifier Front GAWR (min) Front GAWR (max) Rear axle type Rear axle identifier Rear GAWR (min) Rear GAWR (max) Notes
4x2 Torsion bar independent AAM 9.5" 4500lb 4800lb Leaf spring solid axle AAM 11.5" 8550lb
4x4 - - 4500lb 4800lb - - 8550lb

Brakes, Wheels & Tires

Front brake type Disc
Front brake diameter/size 12.80in
Front brake total swept area 245.50sq in
Rear brake type Disc
Rear brake diameter/size 12.80
Rear brake total swept area 235.10sq in
Tires, standard LT215/85 R16 E
Tires, optional
Wheel size, standard 16x6.5
Wheel size, optional
Notes

Towing

Engine Trans Axle ratio GCWR Max loaded trailer weight Notes
6.0L V8 3.73 16000
6.0L V8 4.10 20500
6.6L V8 3.73 23500

References

GM Body Builder / Upfitter Guides (detailed dimensions and specs)
GM Owners Manuals (requires Yahoo ID) Sign in with a Yahoo ID (or create one) to access GM owners manuals and other publications and updates for GM trucks.
The Diesel Page's FAQ for the 6.6L Duramax Covers all years