The proper set of matched valve train components will eliminate most valve train problems. The LC Street Performer Valve Springs fit in the stock spring pockets and install with all of the stock valve train components. The Street Performer Springs will control your valves up to 5500 rpm, with a valve lift of .500. For higher valve lift you should use the LC Pro Dual Valve Springs (Part #1023198) with LC Titanium Retainers (Part #1023003). The installed height of the LC Street Performer Valve Springs is 1.620 - 1.630. Spring seat pressure should be 75 psi at 1.630". Spring coil bind is at .700". Install using the appropriate spring shim.
NOTE: For high lift cams it is recommended to use hardened valve keepers (Part #1023090).
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