Part# CC-4719-12 : Crow Cams stock to mild performance valve spring to suit the 186 202, Red Holden six cylinder engines.

Note: the installed height is for stock Red motor with standard retainers.

Specifications; 1 Spring + inner damper, LH outerspring, outerspring diameters OD = 1.255" & ID = 0.930" inch, inner damper ID = 0.800 , Spring rate = 220, Free height = 2.135", Installed height = 1.625" inch, Installed seat pressure = 105lbs, Pressure @ 0.500" inch lift = 215lbs, maximum lift = 0.625" inch, Solid spring compressed height = 0.960" inch, can use standard retainer or performance retainer 11707-12 and valve locks 11703.

MATCHING PARTS

Spring Retainers click here

Valve locks - collets, click here

NOTE: These valve springs will suit other engines, we have just chosen to list them by engine type to make it easier for you to browse.  Obviously if you know your installed height, spring diameter, maximum lift of your camshaft, the spring pressures you are looking for, etc. Then you can select any of the valve springs we have here on or web site for your application.

To learn more about performance valve springs selection then click here

IMPORTANT NOTE: Please ensure you select the right valve springs for your engine.  We have structured our web site to allow you to make an informed decision on what you are buying, so we encourage you to be thorough. KustomBitz will change over valve springs if you order the wrong ones and they are not used in anyway, however it will cost you a 35% restocking fee plus the additional cost in shipping.