Valve springs are one of the most critical and most over looked components in your engine. They must be matched to your cam in order for the engine to reach its full potential. It does absolutely no good to install a cam that will rpm to 8000 if you do not have the correct springs. The use of the wrong valve springs is one of the most common causes of engine failure. Another is the incorrect installation of the valve springs.
SPECS:
1.550 O.D. outer spring
1.114 id outer spring
.724 I.D. inner spring
Spring Type H-11 Dual
Seat Pressure 196/1.900
Open Pressure 671/1.150
Coil Bind 1.090
Rate 633