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The COMP Cams low-tension checking spring (3.000" long, .725" ID, .850" OD) installs by hand in place of valve springs to simplify piston-to-valve clearance checks, rocker ratio measurements, cam degreeing and pushrod length checks. Essential for engine assembly and setup, a single checking spring lets you perform measurements safely and accurately without the full spring installed.
COMP Cams Checking Spring
