The fuel pump is the single-action, diaphragm type. Two types of fuel pump are used; serviceable and nonserviceable. The serviceable type is used on all 1962-65 engines, 1966 inline engines without the AIR emission control system, and 1966 283 and 327 cu in. V8s. The nonserviceable type is used on all other engines.
The pump is actuated by an eccentric located on the engine camshaft. On inline engines, the eccentric actuates the pump rocker arm. On V8 engines, a pushrod between the camshaft eccentric and the fuel pump activates the pump rocker arm.REMOVAL & INSTALLATION
- Disconnect the fuel inlet and outlet lines at the pump and plug the pump inlet lines.
- On small-block V8 engines, remove the upper bolt from the right front mounting boss. Insert a longer bolt ( 3 / 8 -16 x 2 in.) in this hole to hold the fuel pump pushrod.
- Remove the two pump mounting bolts and lockwashers; remove the pump and its gasket.
- On all small-block engines: if the rocker arm pushrod is to be removed, remove the two adaptor bolts and lock-washers and remove the adaptor and its gasket.
- On all big-block engines: remove the pipe plug if the rocker arm pushrod is to be removed.
The pump pushrod may be retained on big-block engines by inserting nonfibrous grease in the pump opening.
- Install the fuel pump with a new gasket. Coat the mating surfaces with sealer.
- Connect the fuel lines and check for leaks.