Description PN: TFS-2500300 GM LS Heads 0.650″ Max valve liftThis kit includes everything that you need to install a high performance cam in a GM LS engine. The kit contains dual valve springs, titanium retainers, valve seals, locks, spring shims, and a spring height gauge. Instructions are also included STANDARD FEATURES Number of Springs Per Valve — Dual Outside Diameter of Outer Spring (in) — 1.295 in. Damper Spring Included — No Seat Load — 150lb. @ 1.800in. Spring Rate (lbs/in) — 377 lbs./in. Inside Diameter of Outer Spring (in) — 0.949 in. Valve Spring Style — Standard Coated — No Retainers Included — Yes Retainer Material — Titanium Locks Included — Yes Lock Style — 7 degree Lock Groove Quantity — 1-groove Lock Material — Steel Quantity — Sold as a kit
