COMP Cams Valve Spring 1.625in CHR - cca991-1

Dual Valve Springs from COMP Cams are manufactured from Super Clean wire and subject to extensive quality control testing to deliver a valve spring assembly with superior strength, durability and valve train stability, no matter what the application. The dual spring design creates a stronger valve spring that can easily handle the increased lift found in extreme stress applications. COMP Cams Dual Valve Springs exceed the expectations of today’s engine builders and racers. PartNumber : cca991-1 Description : Dual Valve Spring Assemblies; Single Piece Title : 991-1 Valve Spring, 1.625" CHR/SIL Double California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Coil Bind Height : 1.125 Compatible .570" Guide Diameter Spring Seat : 4774-1 Compatible .630" Guide Diameter Spring Seat : 4775-1 Compatible Retainer : 733-1 Compatible Shims : 4756 Compatible Spring Cup (O.D. Locator) : 4702-1 Damper : Yes Inner Spring Inside Diameter : 0.772 Number of Springs : 2 Outer Spring Inside Diameter : 1.18 Outer Spring Outside Diameter : 1.65 Seat Height : 1.95 Seat Pressure : 214 Spring Rate : 640 Open Pressure(lbs) : 670 Spring Type : Double Camshaft Type : Mechanical Coil Bind Height(in) : 1.125 Open Height(in) : 1.25 Spring Rate(lbs/in) : 640 Installed Height(in) : 1.95 Installed Pressure(lbs) : 222 Outside Diameter(in) : 1.65 Inside Diameter(in) : 0.783 Position : N/A Engine Components::Valve Springs, Retainers