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Return to Parts List Category : A- Small Block "LA" : Valve Springs : Conical PAC PAC-1286-16 1.405 OD OVATE BEEHIVE SPRING NO MACHINING REQUIRED $194.40 EQ and Indy LA"X" heads require the use of +100" valves with this kit. With 11/32" Valves With 8mm Valves HUG 1280R - Retainers HUG 1302 - Locks COM 4694-16 - Cups HUG 1290M - Retainers HUG 1307B - Locks HUG 1380 - Cups This 1286 Beehive spring is suitable for small block hydraulic roller, flat tappet, and mechanical flat tappet cams up to .600" net lift. Spring Specs: Small End I.D. (in) 1.000 Large End O.D. (in) 1.405 Install Load (LB) 125.0 Install Height (in) 1.750 Open Load (LB) 295.0 Open Height (in) 1.150 Coil Bind Max 1.060 Lift Max (in) 0.600 Rate 283