Engines with solid cams are generally more performance-oriented. They will need higher spring pressures.
The table below gives general guidelines for engines with a solid flat tappet camshaft.
| Seat Pressure | Open Pressure |
| 130 lbs. | 300-325 lbs. |
Notes
Most manufacturers will recommend valve springs to go with each cam they make. We recommend using these springs, or a spring with similar specifications.