| Year | Seat Angle | Intake Valve Lift Note1 | Valve Spring Pressure Note: 2 | Stem to Guide Clearance |
Stem Diameter |
Are Valve Guides Replaceable | ||||
| In | Ex. | Outer | Inner | Inlet | Exhaust | Inlet | Exhaust | |||
| 1950 All Engines |
30 |
45 |
.297 |
61 1/2 @ 1 23/32 |
None |
.0006 |
.0006 |
.313 |
.313 |
Yes |
| 1951 6Cyl. L Head St. 8, L Head |
30 30 |
45 45 |
.300 .300 |
59 1/2 @ 1 29/32 62 1/2 @ 1 23/32 |
None None |
.0017 .0017 |
.0013 .0014 |
.311 .311 |
.311 .311 |
Yes |
| 1952 All Engines |
30 |
45 |
.300 |
61 1/2 @ 1 23/32 |
None |
.004 |
.004 |
.311 |
.311 |
Yes |
| 1953-54 6 Cyl. L Head St. 8, L Head |
30 30 |
45 45 |
.319 .300 |
59 1/2 @ 1 29/32 62 1/2 @ 1 23/32 |
None None |
.006 .006 |
.006 .006 |
.311 .311 |
.311 .311 |
Yes |
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