Height Mic - 1.400 to 1.900

The PAC Racing Springs Height Mic with 1.400 to 1.900 inch range is a precision valve spring measurement tool designed for engine builders, automotive technicians, and high-performance mechanics who demand accuracy in valve train assembly. This specialized gauge exists because correct valve spring height is critical to proper engine function—too short and you risk inadequate spring pressure; too tall and you compromise valve seat contact and engine geometry. Whether you're rebuilding a stock engine or tuning a race motor, this measurement instrument ensures your springs meet exact specifications before installation.

Constructed with orange anodized aluminum, the Height Mic features a 1.200 inch inner diameter and a 0.050 inch per turn measurement increment, delivering the precision required for professional-grade engine work. The anodized finish provides corrosion resistance and durability in shop environments, while the fine 0.050 inch graduation allows you to detect even minor deviations in spring height that could affect valve timing and engine performance. The compact design—measuring 2.3 x 2.3 x 3.8 inches and weighing only 0.3 pounds—makes it portable and easy to use during component inspection and assembly processes.

Professionals who specialize in performance engine builds, cylinder head work, and valve spring replacement rely on this tool to verify component conformance before final assembly. The 1.400 to 1.900 inch measurement range covers most small-block and mid-sized engine applications, making it invaluable for shops handling multiple engine platforms. Installation and use require only basic mechanical knowledge—simply place the gauge over the spring and adjust until the measurement sits within your target specification. This is an essential reference tool for anyone serious about engine reliability and performance optimization.