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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


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