Valve Springs

Free Length [17]
Pressure [16]
Out Of Square Limit [18]

[16] -- Intake inner, 21 - 22 Lbs. @ 1.555 inch; intake outer, 31 - 33 Lbs. @ 1.733 inch; exhaust inner, 33 - 37.4 Lbs. @ 1.594 inch; exhaust outer, 51.9 - 58.7 Lbs. @ 1.772 inch.
[17] -- Intake inner, 1.840 inch; intake outer, 2.004 inch; exhaust inner, 2.092 inch; exhaust outer, 2.296 inch.
[18] -- Intake inner, 0.063 inch; intake outer, 0.071 inch.