Intake Valve
(1) Diameter of the valve seat insert … 2.1500 ± .0005 in.(54.610 ± 0.013 mm)
Bore in head for valve seat insert … 2.1470 ± .0005 in.(54.534 ± 0.013 mm)
(2) Depth of bore in head for valve seat insert … .442 ± .002 in.(11.23 ± 0.05 mm)
(3) Maximum permissible width of the face of the valve seat insert … .120 in.(3.05 mm)
(4) Distance from head of valve to cylinder head face:
Maximum permissible (valve closed) … .068 in.(1.73 mm)
Minimum permissible (valve closed) … .036 in.(0.91 mm)
(5) Angle of the face of the valve seat insert … 30 1/2 ± 1/2°
(6) Outside diameter of the face of the valve seat insert … 2.045 ± .005 in.(52.23 ± 0.13 mm)
Maximum permissible … 2.065 in.(52.45 mm)
(7) Angle to grind face of seat insert (to get a reduction of maximum seat diameter) … 15°
Exhaust Valve
(1) Depth of bore in head for valve seat insert … .442 ± .005 in.(11.23 ± 0.13 mm)
(2) Diameter of valve seat insert … 1.9120 ± .0005 in.(48.565 ± 0.013 mm)
Bore in head for valve seat insert … 1.9090 ± .0005 in.(48.489 ± 0.013 mm)
(3) Maximum permissible width of the face of the valve seat insert … .105 in.(2.67 mm)
(4) Distance from head of valve to cylinder head face:
Maximum permissible (valve closed) … .085 in.(2.16 mm)
Minimum permissible (valve closed) … .050 in.(1.27 mm)
(5) Angle of the face of the valve seat insert … 45 1/2 ± 1/2°
(6) Outside diameter of the face of the valve seat insert … 1.735 ± .005 in.(44.07 ± 0.13 mm)
Maximum permissible … 1.760 in.(44.70 mm)
(7) Angle to grind face of seat insert (to get a reduction of maximum seat diameter) … 15°