BCBC VS-1688 Engine Valve Spring

Engine Valve Spring Overview

The Melling VS-1688 is a standard replacement engine valve spring built for hydraulic roller camshaft applications. It uses chrome silicon construction and a single-spring design to deliver the pressure and control needed for stock and performance-oriented valvetrain service.

Compatible With Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe, and GMC Yukon applications listed below, this valve spring is part of Melling’s Stock line and is suited for a wide range of street and light-duty truck engines. The VS-1688 part number is also referenced by interchange numbers used for the same application.

• Chrome silicon material for consistent spring performance
• Single spring design for hydraulic roller camshaft setups
• Standard replacement grade for stock-style service
• Installed pressure of 87.0 and open pressure of 272.0
• Fits a broad range of Chevrolet and GMC truck and SUV applications

Detailed Application Notes

The VS-1688 is engineered as a direct replacement valve spring for engines that require the listed installed height, coil bind height, and open height specifications. It is used in Chevrolet Silverado 1500, Chevrolet Tahoe, GMC Sierra 1500, and GMC Yukon applications where the valvetrain calls for a standard replacement spring with hydraulic roller compatibility. Melling VS-1688 supports stock service needs while also covering select truck and SUV applications across multiple model years.

Common Issues Addressed

• Weak or fatigued valve spring tension
• Loss of valve control at operating speed
• Incorrect spring pressure for a hydraulic roller setup
• Replacement needs during valvetrain service

Installation Notes and Tips

Verify installed height, coil bind height, spring open height, and pressure requirements before installation. Confirm cylinder head and camshaft specifications match the listed spring dimensions and hydraulic roller application. Use the vehicle fitment list to confirm the correct Chevrolet or GMC application before ordering.

Quality Assurance

Melling offers valve springs across standard, mid-range, heavy-duty, and race-ready applications, and the VS-1688 is part of the Stock product line for standard replacement service. The part number VS-1688 is supported by multiple cross-reference numbers for the same application.