Owners manual

QSB4.5 and QSB6.7 General Engine
Section V - Maintenance Specifications Page V-1
General Engine
Specifications
Listed below are the general specifications for this engine.
Bore x Stroke.............................................................................................................107 mm [4.21 in] x 124 mm [4.88 in]
Horsepower................................................................................................................................Refer to engine dataplate
Displacement
Four-Cylinder Engine....................................................................................................................4.5 liters [274 C.I.D.]
Six-Cylinder Engine......................................................................................................................6.7 liters [409 C.I.D.]
Firing Order
Four-Cylinder Engine.........................................................................................................................................1-3-4-2
Six-Cylinder Engine.................................................................................................................................... 1-5-3-6-2-4
Engine Weight (with standard accessories):
Dry Weight for 4.5 Liters [274 C.I.D.].....................................................................................................374 kg [825 lb]
Dry Weight for 6.7 Liters [409 C.I.D.]...................................................................................................485 kg [1070 lb]
Crankshaft Rotation (viewed from the front of the engine).................................................................................Clockwise
Valve Clearance:
Intake.............................................................................................................................................0.254 mm [0.010 in]
Exhaust..........................................................................................................................................0.508 mm [0.020 in]
NOTE: The engine features a no-adjust overhead. The valve train is designed such that adjustment of the valve lash
is not required for normal service until the first overhead set adjustment recommended under Maintenance Schedule
in Section 2 of this manual. The valve train operates acceptably within the limits of 0.152- to 0.381-mm [0.006- to
0.015-in] intake valve lash and 0.381- to 0.762-mm [0.015- to 0.030-in] exhaust valve lash.