SPECIFICATIONS
Valve Stem to Valve Guide Clearance
Intake .......................................................................................................................................... 0.0008-0.0025
Wear Limit 0.0055
Exhaust ....................................................................................................................................... 0.0010-0.0027
Wear Limit 0.0055
Valve Head Diameter
Intake .............................................................................................................................................. 1.642-1.660
Exhaust ........................................................................................................................................... 1.381-1.399
Valve Face Runout.................................................................................................................. Wear Limit 0.002
Valve Spring Free Length - Approximate .....................................................................................................1.79
Valve Spring Out of Square - Maximum ....................................................................................................0.078
Valve Spring Pressure -
Lbs at Specified Length ........................................................................................................... 51-57 at 1.590
Wear Limit 46 at 1.590
142-158 at 1.222
Wear Limit 128 at 1.222
Valve Spring Assembled Height -
Pad to Retainer ............................................................................................................................. 1-9/16 - 1-5/8
Hydraulic Valve Lifter Leak Down
Rate - Second ............................................................................................................................................. 5-50
Valve Push Rod Runout- Maximum .................................................................................................................0.025
Valve Tappet Diameter - Standard .................................................................................................... 0.8740-0.8745
Valve Tappet to Tappet
Bore Clearance ........................................................................................................................... 0.0007-0.0027
Wear Limit 0.0050
Valve Tappet - Collapsed
Valve Clearance
200 .................................................................................................................................................... 079-.209
CAMSHAFT AND TIMING GEARS
Camshaft Journal Diameter -Standard .............................................................................................. 1.8094-1.8105
Camshaft Journal Runout .................................................................................................................................0.008
Camshaft Journal to Bearing Clearance................................................................................................ 0.001-0.003
Wear Limit 0.006
Camshaft Journal Out-of-Round ....................................................................................................................0.0005
Camshaft End Play ................................................................................................................................ 0.001-0.007
Wear Limit 0.009
Camshaft Gear to Crankshaft
Gear Backlash ....................................................................................................................................... 0.002-0.004
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