Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Cold (Fast) Idle Rpm: 4-Bbl.
With distributor vacuum hose connected and on all except Corvette the fuel tank hose removed from Vapor Canister. On Corvette, remove fuel tank cap nut but do not remove hose to canister. Turn Air Cond. OFF, place Man. Trans. in "N", or Auto. Trans. in "P". With choke wide open and fast idle cam follower on high step of cam, set fast idle to specified RPM.
| Application | Fast Idle RPM | |
|---|---|---|
| 350" 4-Bbl. | Man. Trans. | 1300 |
| Auto. Trans. | 1600 | |
| 454" All Trans. | 1600 | |
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.