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.
Anti-Stall Dashpot Adjustment
With carburetor hot (slow) idle speed correctly set, hold throttle valve closed. Clearance between dashpot plunger and throttle lever with dashpot plunger fully depressed should be as shown in table below. Adjust by loosening locknut and turning dashpot in bracket.
| Engine | Transmission | Dashpot Setting | ||
|---|---|---|---|---|
| 302" 2-Bbl. | Both | 1/8" | ||
| 351" 2-Bbl. | Synchro-mesh | 7/64" | ||
| Auto. Trans. | None | |||
| 4-Bbl. | Synchro-mesh | 3/32" | ||
| Auto. Trans. | None | |||
| 390" 2-Bbl. | Both | 1/8" | ||
| 4-Bbl. | Synchro-mesh | 1/8" | ||
| Auto. Trans. | None | |||
| 428" (Police) 4-Bbl. | Auto. Trans. | 1/64" | ||
| Cobra Jet 4-Bbl. | Both | 100" | ||
| 429" 2-Bbl. | Auto. Trans. | 1/8" | ||
| 4-Bbl. | Both | 3/32" | ||
NO RELATED
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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.