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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 87 (3.0L V6 - VIN [3]) >> Engine Specifications >> Cylinder Head Specifications

Cylinder Head Specifications

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Dodge Caravan. However, it is still accessible from the selected car via links, so may be relevant.
CYLINDER HEAD

Application Specification
Maximum Warpage (1) .002" (.05 mm)
Valve Seats
Intake Valve
Seat Angle 44°
Seat Width .035-.051" (.90-1.30 mm)
Exhaust Valve
Seat Angle 44°
Seat Width .035-.051" (.90-1.30 mm)
Valve Guides
Intake Valve
Valve Guide I.D. .314-.315" (8.00-8.01 mm)
Valve Guide Protrusion .568-.580" (14.45-14.75 mm)
Valve Stem-To-Guide Oil Clearance
Standard .001-.002" (.03-.05 mm)
Wear Limit .0039" (.100 mm)
Exhaust Valve
Valve Guide I.D. .314-.315" (8.00-8.01 mm)
Valve Guide Protrusion .568-.580" (14.45-14.75 mm)
Valve Stem-To-Guide Oil Clearance
Standard .0019-.0035" (.050-.090 mm)
Wear Limit .006" (.15 mm)
(1) Combined maximum total grind limit of cylinder head and cylinder block is .008" (.20 mm)