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Recommended Valve Spring Pressures
Please note, the valve spring pressure figures given here are guidelines only. Some special applications may require different pressures. When in doubt, please contact your camshaft supplier.
The following recommendations are from Erson Cams. If you have questions, you can reach their tech department at 800-641-7920.
Hydraulic Flat Tappet Camshaft: 110 lbs Seat pressure/250-280 lbs open pressure
Solid Flat Tappet Camshaft: 130 lbs Seat Pressure/300-325 lbs open pressure
Hydraulic Roller Camshaft: 130 lbs Seat Pressure/300- 325 lbs open pressure
Solid Roller Camshaft: (Minimum Safe Pressures)
Up to .600˝ valve lift: 200-235 lbs Seat Pressure/600 lbs open pressure
Over .600˝ valve lift: 250-280 lbs Seat pressure /100 lbs pressure for every .100˝ of valve lift