Cummins ISC, QSC 8.3L Torque & Engine Specifications, (24 Valve) piston marked 3120
Engine Details & Torque Specs
Engine Make: Cummins
Engine Cubic Inches: 505
Engine Model: ISC 8.3L
Engine Notes: piston marked 3120
Other Notes: piston marked 3120
Year/Serial: Fuel: Diesel
Cylinders: 6
Bore: 4.488"
Stroke: 5.315"
Firing Order: 1-5-3-6-2-4
Intake Valve Lash: .006-.022"
Exhaust Valve Lash: .015-.032" (.381-.813 mm)
Rod Torque: 26, 52 ft/lbs, +60 degrees
Head Torque: 108, 108 ft/lbs, +90 degrees
Main Torque: 37, 70 ft/lbs, +60 degrees
Rod Journal Diameter: 2.9916-2.9926"
Main Journal Diameter: 3.8568-3.8588"
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