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Section: Mechanical

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Cylinder Head Specifications GMC Jimmy Typhoon

Mechanical

Application			Specification
Valve Seats
Intake Valve
Seat Angle			46°
Seat Width			.031-.063" (.79-1.60 mm)
Maximum Seat Runout			.002" (.05 mm)
Exhaust Valve
Seat Angle			46°
Seat Width			.063-.094" (1.60-2.39 mm)
Maximum Seat Runout			.002" (.05 mm)
Valve Guide Oil Clearance			.001-.003" (.03-.08 mm)

CYLINDER HEAD