School Transportation News Magazine | Buyer’s Guide 2025


ACE THE EXAM


WITH OUR DPFS


DATA, STATISTICS AND TRENDS DETROIT ENGINES


Engine Type: Detroit® DD5™ Configuration: Inline 4 cylinder Displacement: 313 cu in (5.1 L) Compression Ratio: 17.6:1 Bore: 4.33 in (110 mm) Stroke: 5.3 in (135 mm) Weight (Dry): 1,188 lbs (539 kg) Electronics: DDEC Service Fill (Oil & Filter Change): 18.5 qt (17.5 L) Horsepower Range: 200-240 hp @ 2,200 rpm Torque Range: 560-660 lb-ft @ 1,400 rpm Warranty: Up to 60 months or 100,000 miles (160,000 km), whichever occurs first


Engine Type: Detroit® DD8™ Configuration: Inline 6 Cylinder Displacement: 470 cu in (7.7 L) Compression Ratio: 17.6:1 Bore: 4.33 in (110 mm) Stroke: 5.3 in (135 mm) Weight (Dry): 1,437 lbs (652 kg) Electronics: DDEC Service Fill (Oil & Filter Change): 26.9 qt (25.5 L) Horsepower Range: 260-300 hp @ 2,200 rpm Torque Range: 660-860 lb-ft @ 1,400 rpm Warranty: Up to 60 months or 100,000 miles (160,000 km), whichever occurs first


GENERAL MOTORS


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Engine Type: Express/Savana 6.6L V8 Fuel Type: Regular Gasoline (87 Octane) Displacement: 6554 cc (400 CI) Engine Orientation: Longitudinal Compression Ratio: 10.8:1 Valve Configuration: Overhead Valves Vales Per Cylinder: Two Valve Lifters: Hydraulic Roller Firing Order: 1-8-7-2-6-5-4-3 Bore X Stroke: 103.25 x 98.0 mm Horsepower: 401 hp (299 kW) @ 5200 rpm* Torque: 464 lb-ft (629 Nm) @ 4000 rpm* Maximum Engine Speed: 5600 rpm Emissions Control: Catalytic Converter, Three- way catalyst, Positive Crankcase Ventilation


*As tested in Chevrolet Silverado HD


Engine Type: LV1 4.3L V6 Engine Type: Overhead Valves with Vari- able Valve Timing Fuel Type: Gasoline with Direct Injection Displacement: 262.4 (4.3) Compression Ratio: 11.0:1 Bore & Stroke: 3.92 x 3.62 (9.96 x 9.20) Horsepower: 276 @ 5,200 rpm


Torque: 298 @ 3,900 rpm Engine Architecture: Aluminum block casting


Engine Dry Weight: 405 lbs


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