Camshaft Part Number :E1840P, E-1840-P. Item Include : Camshaft 1 , Spring 16. Valve Spring for LS Engines. Number of Springs Per Valve: Single.
Outside Diameter of Outer Spring (in): 1.290 in. Spring Coil Bind Height (in): 1.140 in. Spring Install Height: 1.800. Spring Open Height: 1.175. Spring Open Load: 318 lbs. Spring Rate (lbs/in): 313 lbs. Inside Diameter of Outer Spring (in): 0.885 in.1pcs E-1840-P Camshaft 16pcs PAC1218 Spring.