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.
Valve Spring Installed Height
Valve springs must be square within 1/16" Installed height of springs (measured from spring contact area on head to underside of spring retainer) should not exceed specifications. If height is greater than maximum allowable, install a 1/16" spacer(s) to bring spring height back to normal.
| Engine | Minimum | Maximum |
|---|---|---|
| 318" & 360" | 1 5/8" | 1 11/16" |
| 400" & 440" | 1 53/64" | 157/64" |
NO RELATED
Use the Manual With the Right Hardware
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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.