Engine, 6.6L V8 SIDI, GMPT-V8 8 cylinder V Iron block, four cycle overhead valve water cooled 6.6L SIDI V8 350 hp [261 kW] @ 4500 rpm, 425 lb.-ft of torque [575.8 N-m] @ 3800 rpm. Electronically controlled direct fuel injection. Six bolt main cap design for heavy-duty performance. Engine Control Module (ECM) and Transmission Control Module (TCM) engine control system. Engine cruise control, engine oil cooler, High Idle Mode (1200 rpm).
Exhaust, single outlet
Frame, ladder-type channel frame. Full C section straight frame 33.5" (85.1 cm) wide. Yield strength 44,000 psi, section modulus 7.20 cu.in. and RBM 316,800 lb-ft/in per rail.
Front axle, 6,830 lbs. (3098 kg), reverse Elliot "I"-beam includes integral hydraulic power steering, with an 18.8-20.9:1 gear ratio (Standard on 3500 HG, 4500 HG, and 5500 HG models only.)
Fuel tank, 38.6 Gallon, (146L), rectangular fuel tank mounted between frame rail with electric type fuel pump (mounted in tank). Through the rail fuel fill.
GVWR, 17,950 lbs. (8142 kg) (Standard on 5500 HG model only.)
Incomplete vehicle certification
Lighting, interior dome
Mirror, outside left-hand and right-hand with integral convex mirrors
Rear axle, 5.37 ratio (Standard on 5500 HG/XG models only.)
Rear suspension, 14,550 lbs. (6600 kg), multi-leaf, semi-elliptical steel alloy. Includes shock absorbers (Standard on 5500 HG/XG models only.)
SEAT TRIM, CLOTH
Seat, front high back bucket driver and passenger tricot cloth covered reclining high back driver seat with single two-occupant fold down passenger seat
Steering column, Tilt-Wheel
Steering wheel, urethane
Storage, door pockets
Storage, seatback pockets
Tires, front, 225/70R19.5 G (Standard on 4500 HG and 5500 HG/XG models only.)
Tires, rear, 225/70R19.5 G, LRR (low rolling resistance) tubeless steel belted radial, all-season (Standard on 4500 HG and 5500 HG/XG models only.)
Transmission, Allison 1000 RDS 6-speed automatic, PTO not available (Standard on 5500 HG/XG models only.)
Vehicle Application Truck
WHEELBASE, 132.5" (336.6 CM)
Wheels, 19.5" x 6", K steel (Standard on 4500 HG and 5500 HG/XG models only.)
Windshield washer bottle access on passenger side dash when passenger-side door is open
Windshield wiper, pulse, wet arm
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