Race Ext 1.66" Triple Sprng, 2" Inst Ht

The COMP Cams 946-1 is a triple valve spring designed for maximum strength, durability, and valve train stability. Engineered from Super Clean wire and subjected to extensive quality control, its triple spring design creates a stronger valve spring capable of handling increased lift and extreme demands in aggressive applications.

These triple valve springs exceed the expectations of today's engine builders and racers. Key specifications include an outer spring OD of 1.66 inches, an inner spring ID of 0.863/0.627 inches, and an outer spring ID of 1.196 inches. The spring rate is 689 lb/in with a seat pressure of 285 lbs at an installed height of 2 inches. The coil bind height is 1.13 inches, and the maximum lift is 0.81 inches. This product comes with a 12-month warranty.