Valve Clearance: Adjustments

Fig. 21 Valve adjustment alignment marks:

Fig. 20 Valve clearance check:

To provide a means to compensate for dimensional changes in the valve train and provide for valve adjustment, .060 inch shorter or longer pushrods are available. If the valve clearance is less than the minimum, the .060 inch shorter pushrod should be used. If the clearance is more than the maximum, the longer pushrod should be used. To check the valve clearance, proceed as follows:

1. Install auxiliary starter switch.
2. Mark crankshaft pulley at three locations, with No. 1 location at TDC timing mark (end of compression stroke), location No. 2 one full turn (360°) clockwise from TDC and No. 3 location one quarter turn clockwise (90°) from position No. 2, Fig. 21.
3. Turn crankshaft to number 1 location, then compress valve lifter using tappet bleed down tool T71P-6513-A or equivalent, Fig. 20, and check the clearance on the following valves:

5.0L/V8-302
No. 1 Intake
No. 1 Exhaust
No. 7 Intake
No. 5 Exhaust
No. 8 Intake
No. 4 Exhaust

5.8L/V8-351
No. 1 Intake
No. 1 Exhaust
No. 4 Intake
No. 3 Exhaust
No. 8 Intake
No. 7 Exhaust

4. Turn crankshaft to number 2 location, then compress valve lifter using tool T71P-6513-A or equivalent, Fig. 20, and check the clearance on the following valves:

5.0L/V8-302
No. 5 Intake
No. 2 Exhaust
No. 4 Intake
No. 6 Exhaust

5.8L/V8-351
No. 3 Intake
No. 2 Exhaust
No. 7 Intake
No. 6 Exhaust

5. Turn crankshaft to number 3 location, then compress valve lifter using tool T71P-6513-A or equivalent, Fig. 20, and check the clearance on the following valves:

5.0L/V8-302
No. 2 Intake
No. 7 Exhaust
No. 3 Intake
No. 3 Exhaust
No. 6 Intake
No. 8 Exhaust

5.8L/V8-351
No. 2 Intake
No. 4 Exhaust
No. 5 Intake
No. 5 Exhaust
No. 6 Intake
No. 8 Exhaust