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Valve Clearance Adjustment

  1. With No. 1 piston at TDC of compression stroke, adjust intake valves 1, 2, and 4 and exhaust valves 1, 3, and 5 to specified clearance.
  2. Rotate crankshaft one complete revolution and align crankshaft damper V groove with timing chain cover "O" mark. Adjust intake valves 3, 5, and 6 and exhaust valves 2, 4, and 6 to specified clearance.
VALVE CLEARANCE SPECIFICATIONS

Application Hot Cold
Intake 007" (.18 mm) 006" (.15 mm)
Exhaust 010" (.25 mm) 008" (.20 mm)
PISTONS, PINS, RINGS

Engine PISTONS PINS RINGS
Clearance In. (mm) Piston Fit In. (mm) Rod Fit In. (mm) Rings End Gap In. (mm) Side Clearance In. (mm)
1965-67            
M .0012-.0020 (.03-.05) (1) .0002-.0004 (.005-.011) 1 .0059-.0140 (.15-.35) .0012-.0027 (.03-.07)
2 .0059-.0140 (.15-.35) .0008-.0024 (.02-.06)
3 .0059-.0140 (.15-.35) .0008-.0026 (.02-.065)
1968-71            
2M .001-.002 (.03-.05) (1) .0002-, 0004 (.005-.011) 1 .006-.014 (.15-.35) .0012-.0028 (.03-.07)
2 .006-.014 (.15-.35) .0008-.0024 (.02-.06)
3 .008-.020
(.20-.50)		 Zero
Zero
1972-73            
4M (2).002-.003 (.05-.07) (1) .0002-.0004 (.005-.011) 1 .006-.014 (.15-.35) .0012-.0028 (.03-.07)
(3).001-.002 (.03-.05) 2 .006-.014 (.15-.35) .0008-.0024 (.02-.06)
3 .008-.020
(.20-.50)		 Zero
Zero
(1) Pin should push through with light thumb pressure with piston at 122-144°F (50-60°C).
(2) Measure directly below oil groove.
(3) Measured at bottom of skirt.
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