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Install The Push Rods And The Rocker Arms
1. Install the push rods in engine. The exhaust push rods are longer than the intake push rods. Ensure that the push rods are
seated
properly in the lifters. See Figure 5.
2. Apply grease to the rocker arm balls and the rocker arms.
3. Hand tighten the rocker arms, the rocker arm balls, and the rocker arm nuts onto the rocker arm studs. See Figure 6.
Set The Lifter Preload
1. Rotate the crankshaft with a wrench until the "0" mark on the vibration damper lines
up with the timing tab and the engine is in the number one firing position. This may
be determined by placing fingers on the number one rocker arms as the "0" mark on
the damper comes near the timing tab. If the rocker arms are not moving, the engine
is in the number one firing position. If the rocker arms move as the mark comes
up to the timing tab, the engine is in the number six firing position and the crankshaft
should be turned over one more time to reach the number one position.
2. With the engine in the number one firing position as determined above, the following
valves may be adjusted:
Exhaust: 1, 3, 4, 8
Intake: 1, 2, 5, 7
(Even numbered cylinders are in the right bank; odd numbered cylinders are in the left
bank, when viewed from the rear of the engine).
3. Loosen the adjusting nut until lash is felt at the pushrod then tighten the adjusting
nut until all lash is removed. This can be determined by rotating the pushrod while
turning the adjusting nut. See Figure 7. When the lash has been removed, tighten
the adjusting nut an additional 1/2 turn to center the lifter plunger.
4. Rotate the crankshaft with a wrench one revolution until the vibration damper "0" mark
and the timing tab are again in alignment. This is the number six firing position. The
following valves may be adjusted:
Exhaust: 2, 5, 6,7
Intake: 3, 4, 6, 8
Install The Rocker Arm Covers
1. Pour EOS over the lifters, the rocker arms, and the drain holes over the camshaft.
2. Install the grommets and the oil fill cap to the rocker arm covers.
3. Install the engine identification decals on the covers if desired.
4. Install the rocker arm cover gaskets to the cylinder heads.
5. Install the rocker arm covers using the 14 1/4"-20x7/8" bolts.
6. Torque the bolts to 70 in-lbs. See Figure 8
502/502 Big Block Chevrolet Engine Pkg.
TITLE
COVER
FRONT
FIGURE 8
12368083
REV 16JA15
PART NO.
FIGURE 7
BOLT
BOLT
COVER
AT TIME OF
INSTALLATION
FLANGES MUST BE
FREE OF OIL
CYLINDER HEAD ASSEMBLY
5
SHEET
OF
63
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