6
4. Before connecting the linkage, operate the throttle lever to assure the correct travel (no sticking or binding), by opening to
wide-open throttle and back to closed throttle several times. Correct any sticking or binding conditions before proceeding.
WARNING: Any sticking, binding, or other interference in the throttle linkage could result in uncontrolled engine
speed. This could result in engine damage or personal injury.
5. Reconnect the throttle and transmission kickdown linkage and throttle return spring (Holley® P/N 20-89). Operate the
carburetor throttle lever by hand to assure the correct travel (no sticking or binding) by opening to wide open throttle and
back to closed throttle several times. Correct any sticking or binding conditions before proceeding.
NOTE: With the engine turned off
, have an assistant slowly press the accelerator pedal to the floor, while you watch the
throttle for any sticking or binding. Correct any sticking or binding conditions before proceeding. Also ensure that you
are reaching full throttle. Many performance problems are traced to partial throttle openings from improperly adjusted
linkage.
Figure 6
6. Reconnect the appropriate vacuum hoses to the carburetor, noting the correct fitting from Figure 6 and 7. Replace any
cracked or dry rotted hoses at this time to prevent any vacuum leaks.
A. The full manifold vacuum source in the front of the throttle body provides vacuum for proper operation of the air
cleaner, the pump diverter valve (if equipped), AC/Cruise, and/or the temperature sensing valve. If vacuum for more
than one component is needed, use small plastic vacuum “T”s (available at most automotive stores).
B. The timed spark fitting in the choke side of the primary metering block provides vacuum for the operation of the
distributor vacuum advance. Connect the hose to the distributor, spark delay valve, and/or temperature sensing valve
as originally connected. Again use “T”s as necessary. If any questions arise about the hose connections, consult the
proper service manual.
C. Plug any vacuum source not used.
7. Connect the PCV hose to the PCV fitting in the carburetor.
8. Connect the power brake hose to the fitting as shown in Figures 6 or 7.
