PAC Beehive RPM Series Valve Spring Set 6.2/6.4L Hemi Drop in Spring for .650" Max Lift Fuel Injectors and installation is easy –

and installation is easy – all hardware and installation instructions are included

These pads also have multi-layer rubberized shims that insulate noise for virtually silent braking

Compatible with power adders and bolt-ons

7L HEMI supercharger kits deliver incredible horse power and torque while maintaining an OEM level reliability and function

(2) 8 ft sensor cables

PAC Beehive RPM Series Valve Spring Set 6.2/6.4L Hemi Drop in Spring for .650" Max Lift Fuel Injectors and installation is easy –Drop in spring for 09+ Hemi engines includes 6. 2 6. 4 Apache heads. Includes Springs only, to be used with factory retainers, and seats O. D. Large End (in) 1. 345 I. D. Large End (in) 0. 900 O. D. Small End (in) 1. 095 I. D. Small End (in) 0. 650 Installed Height (Valve Closed) (in) 175 @ 2. 050 Open Valve (Valve Open) 450 @ 1. 400 Spring Rate 423 Max Coil Bind (in) 1. 346 Max Lift (in) 0. 650 Titanium Retainers PAC R510 PAC R511 Steel Retainers PAC