The PAC Racing Springs Height Mic valve spring height gauge is a precision measurement tool designed for engine builders, race mechanics, and serious automotive enthusiasts who need to verify valve spring installed heights during engine assembly or rebuild operations. Accurate valve spring height is critical to proper valve train geometry, preload, and overall engine performance; even small deviations can affect cam timing, valve lift, and reliability.
This gauging instrument delivers the precision required to ensure specifications are met before an engine runs. The Height Mic features a measurement range of 1.800 to 2.600 inches with a scale resolution of 0.001 inch increments, allowing technicians to capture exact spring heights across a wide range of engine platforms and applications. Its red anodized aluminum construction provides durability while remaining lightweight at 0.4 pounds, making it easy to position and read during cylinder head work.
This tool is indispensable for anyone assembling or blueprinting small-block and big-block engines, particularly in racing, restoration, or high-performance builds where valve train precision directly impacts horsepower and reliability. The 1.800 to 2.600-inch range accommodates most conventional domestic and import four-, six-, and eight-cylinder applications, ensuring versatility for various engine types.
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