Cylinder Head Specifications

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CYLINDER HEAD

Application

Specification

Cylinder Head Height

5.095-5.105" (129.41-129.67 mm)

Maximum Warpage

⁽¹⁾

Valve Seats

Intake Valve

Seat Angle

30°

Seat Width

.065-.095" (1.65-2.41 mm)

Maximum Seat Runout

.002" (.05 mm)

Exhaust Valve

Seat Angle

37.5°

Seat Width

.065-.095" (1.65-2.41 mm)

Maximum Seat Runout

.002" (.05 mm)

Valve Guides

Intake & Exhaust

Valve Guide Bore Diameter

.3141-.3151" (7.98-8.00 mm)

Valve Stem-To-Guide Maximum Oil Clearance

.0055" (.140 mm)

⁽¹⁾	Warpage should not exceed .0010" (.025 mm) within a 2.0" (51 mm) area or .0040" (.102 mm) overall. Replace cylinder head if warpage exceeds specification. DO NOT resurface cylinder head.