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Home >> GMC >> 1998 >> Jimmy 4D Utility, RWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical - 4.3L V6, 5.0L, 5.7L & 7.4L V8 - VINS [W,X,M,R,J] >> Engine Specifications >> Cylinder Head (4.3L)

Cylinder Head (4.3L)

CYLINDER HEAD (4.3L)

Application Specification
Valve Seats
Intake Valve
Seat Angle 46°
Seat Width .035-.06" (.88-1.52 mm)
Maximum Seat Runout .002" (.051 mm)
Exhaust Valve
Seat Angle 46°
Seat Width .065-.098" (1.575-2.362 mm)
Maximum Seat Runout .002" (.051 mm)
Valve Guide Oil Clearance .0011-.0027" (.0279-.069 mm)
Warpage .004" (.1 mm)