FixVault

Fast Idle Setting (Off Engine)

With primary throttle valves completely closed and cam follower positioned on high step of fast idle cam, turn fast idle screw in until it makes contact with lever, then turn screw in an additional number of turns as listed below. See FAST IDLE SPEED (ON ENGINE) for final adjustment  .

Fast Idle Screw Setting

Car Model Screw Position
Cadillac 1 1/2 turns
Chevrolet, Chevelle, Chevy Nova, Camaro 3 1/2 turns
Pontiac, Tempest, Firebird 2 turns
Fig 1: Fast Idle Speed Adjustment
G09353492Courtesy of GENERAL MOTORS COMPANY
Fig 2: Fast Idle Setting (Off Engine) (Typical)
G09353493Courtesy of GENERAL MOTORS COMPANY