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Install The Coolant Pump
1. Align the coolant pump gaskets with the coolant holes and the bolt holes on the engine block. At the same time place the
coolant pump over the gaskets and insert the coolant pump bolts. The 3.5" bolt goes in the bottom passenger side bolt hole
of the coolant pump. The three 1.75" bolts go in the remaining bolt holes of the coolant pump. See Figure 19. Torque the
bolts to 30 ft-lbs.
2. Coat the threads of the thermo bypass connectors with thread sealer. Install the connectors into the top of the coolant
pump and the front of the intake manifold. See Figure 20. Torque the connectors to 25 ft-lbs.
3. Cut the thermo bypass hose to the desired length using a sharp utility knife. Place hose clamps onto both ends of the hose.
Install the hose onto the connectors and tighten the hose clamps. Torque the clamps to 35 in-lbs. See Views A and B in
Figure 20 for proper alignment of the hose clamps.
4. If the heater will not be used, plug the heater hose outlet on the coolant pump. Coat a 1/2"-14 pipe plug with thread sealer
and install the pipe plug into the heater hose outlet on the coolant pump. There are only four 1/2"-14 pipe plugs supplied
with this engine package. Additional pipe plugs can be purchased from your dealer. See Figure 21. If the heater will be
used, install a heater hose fitting into the heater hose outlet on the coolant pump. Purchase a heater hose fitting from your
dealer. Coat the threads of the fitting with thread sealer and install the fitting into the heater hose outlet on the coolant
pump. Connect the heater hose with a hose clamp to the fitting after the engine is installed in the vehicle.
FIGURE 19
PUMP
GASKET
ASSEMBLY
BOLT
PLUG
FIGURE 21
502/502 Big Block Chevrolet Engine Pkg.
TITLE
ALL GASKET MATING SURFACES TO BE
FREE OF OIL AND FOREIGN MATERIAL
FRONT
GASKET
BLOCK
ASSEMBLY
WATER PUMP ASSEMBLY
FRONT
CONNECTOR
WATER PUMP
ASSEMBLY
FIGURE 20
CLAMP
12368083
REV 16JA15
PART NO.
FRONT
B
CONNECTOR
CLAMP
HOSE
A
POSITION BOLT/SCREW
IN THIS AREA
VIEW A REAR CLAMP
POSITION BOLT/SCREW
IN THIS AREA
CLAMP
VIEW B FRONT CLAMP
SHEET
INTAKE
MANIFOLD
ASSEMBLY
10
63
OF
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