PAC Racing Springs PAC-T904 Valve Spring Height Gauge for LS Dual Retainers, 1.400-2.000 in Range

The PAC Racing Springs PAC-T904 Valve Spring Height Gauge is designed for accurately checking installed valve spring height on LS cylinder heads using dual spring retainers. With a measurement range from 1.400 to 2.000 inches and a 0.001-inch scale, this precision tool helps engine builders and performance technicians verify spring setup during assembly, tuning, and maintenance.

Built for practical shop use, the PAC-T904 height gauge provides a direct way to confirm valve spring installation dimensions and identify variations that may affect valvetrain performance. Its clear graduated scale supports consistent measurements, while the purple anodized finish provides a durable surface suited to repeated handling in professional and enthusiast environments.

Use the PAC Racing Springs PAC-T904 when setting up LS applications equipped with dual valve springs and compatible retainers. Proper spring height verification helps support correct installed pressure, maintain intended valvetrain geometry, and reduce the risk of setup-related performance issues. This gauge is supplied as an individual tool and is a useful addition to an engine builder’s precision measurement equipment.

Features:

• Brand: PAC Racing Springs
• Part Number: PAC-T904
• Application: LS cylinder heads with dual valve spring retainers
• Measurement Range: 1.400 to 2.000 inches
• Scale Resolution: 0.001 inch
• Finish: Purple anodized
• Product Type: Valve spring height gauge
• Quantity: Each