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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 5.7L V8 - VIN [K] >> Engine Specifications >> Cylinder Head Specifications

Cylinder Head Specifications

CYLINDER HEAD SPECIFICATIONS

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 Guides Oil Clearance
Intake Valve .001-.003" (.03-.07 mm)
Exhaust Valve .001-.004" (.03-.10 mm)