How to find the right Automotive Performance Engine Valve Springs AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Automotive Performance Engine Valve Springs
- Spring pressure matched to the cam
- Use the seat and open pressures the cam maker recommends for the lift, lobe profile and lifter type. Too little pressure floats the valves, and too much wears lobes, lifters and rockers.
- Coil bind margin
- Keep a commonly cited minimum of about 0.060 in between maximum lift and coil bind. A coil-bound spring breaks parts instantly.
- Installed height
- Measure each valve and shim it to the spring maker's installed height. Pressure changes significantly with small height differences.
- Fit and style
- Match the spring outside and inside diameters to the head seat and retainer, choosing single, dual or beehive as the head allows. An unsupported or rubbing spring fails early.
Brands that matter
- PAC Racing Springs: Respected performance spring maker.
- COMP Cams: Wide range matched to their cams.
- Brian Crower: Import spring and retainer kits.
- Manley: Springs for domestic and import builds.
- Ferrea: Springs alongside their valves.
- Supertech: Import spring kits.
What to avoid
- Breaking in a flat-tappet cam on full-pressure springs
- Reusing old springs with a new cam
- Skipping the installed height measurement
Questions
Do I need new springs for a new cam?
Almost always; the cam maker lists the required pressures, and stock springs rarely match a higher-lift profile.