Valves & Valve Springs Specifications

VALVES & VALVE SPRINGS SPECIFICATIONS

Application

In. (mm)

Intake Valves

Face Angle

45°

Head Diameter

1.254-1.266 (31.85-32.15)

Installed Height ⁽¹⁾

⁽²⁾ 1.535-1.555 (39.00-39.50)

Minimum Margin

.0433 (1.10)

Minimum Refinish Length

3.6678 (93.41)

Stem Diameter

.2350-.2356 (5.970-5.985)

Exhaust Valve

Face Angle

45°

Head Diameter

1.080-1.093 (27.45-27.75)

Installed Height ⁽¹⁾

⁽²⁾ 1.535-1.555 (39.00-39.50)

Minimum Margin

.0472 (1.20)

Minimum Refinish Length

3.720 (94.49)

Stem Diameter

.2349-.2354 (5.965-5.980)

Valve Springs

Free Length

Standard

1.732 (44.00)

Service Limit

1.437 (36.5)

Maximum Out-Of-Square

.061 (1.54)

⁽¹⁾	Valve height is measured from top of installed valve to spring seat.

⁽²⁾	If valve stem height is 1.791-1.831" (45.5-46.5 mm), shim spring seat with washer to bring within specification. If installed valve height exceeds 1.831" (46.5 mm), replace cylinder head.