1976 Models

On 2-barrel carburetor equipped models, fast idle is preset and no adjustment is required. On 4-barrel equipped models, place transmission-in Neutral.
On all engines except 455", disconnect and plug vacuum hose at EGR valve (if equipped). On 454" Light Duty engines with electric choke, disconnect and plug vacuum hose to choke front vacuum break unit.
Disconnect vacuum hose at manifold and plug fitting. Check ignition timing and adjust if necessary. Place cam follower on highest step of fast idle cam. Turn fast idle speed screw to obtain correct fast idle speed RPM.
On 455" engines, remove air cleaner, disconnect vacuum hose at manifold, and plug fitting. Disconnect and plug vacuum advance hose. Check ignition timing and adjust if necessary. Position cam follower on lowest step of fast idle cam and adjust fast idle RPM.

1976 COLD (FAST) IDLE RPM SPECIFICATIONS