BCBC VS-320 Engine Valve Spring

Engine Valve Spring Overview

Melling VS-320 is a standard replacement dual valve spring for performance and stock applications that require controlled valve motion and stable spring pressure. It is built from corrosion-resistant steel and is listed for use with the MTC-6 camshaft in a wide range of Chevrolet and GMC applications, including Chevrolet Camaro, Chevrolet Impala, and GMC C3500.

Key Features

• Dual spring design for consistent valve control.
• Corrosion-resistant steel construction.
• Standard replacement grade for service and performance use.
• Installed height: 1.88 in. / 48.0 mm.
• Installed pressure: 100.0.
• Open pressure: 315.0.
• Coil bind height: 1.35 in. / 34.0 mm.
• Spring open height: 1.38 in. / 35.0 mm.
• Inside diameter: 1.082 in. / 27.0 mm.
• Outside diameter: 1.532 in. / 39.0 mm.

Detailed Description

The Melling VS-320 valve spring is engineered for engines that need dependable spring pressure across street, towing, and higher-output use. Its dual-spring construction and specified pressure range help maintain valve train stability, while the corrosion-resistant steel material supports long-term service in demanding engine environments. This part cross-references Monroe Shocks & Struts (e.g., 32-815-D, 050-815-7) for the same application.

Compatible With Chevrolet and GMC engine builds that call for the VS-320 specification, including Chevrolet Camaro, Chevrolet Impala, and GMC C3500 applications listed with the MTC-6 camshaft note. The VS-320 part number is also useful when matching replacement valve springs by installed height, pressure, and spring geometry.

What It Is Used For

• Replacing a worn or weakened valve spring.
• Restoring valve control in engines with specified spring pressure requirements.
• Supporting camshaft setups that call for the MTC-6 camshaft note.
• Addressing valve float or inconsistent valve motion caused by spring fatigue.
• Matching a standard replacement spring to the listed dimensions and pressure range.

Installation Notes and Tips

Verify installed height, coil bind clearance, and spring pressure before installation. Confirm the engine’s camshaft and valvetrain requirements against the listed fitment notes, especially where the application specifies use with the MTC-6 camshaft. The VS-320 should be matched to the correct valve train setup for the engine family and intended operating range.

Quality Assurance

Melling offers a broad valve spring lineup covering standard, heavy-duty, and race-ready needs, with multiple spring designs and pressure ranges available. VS-320 is part of the Stock line and is built to meet standard replacement requirements for the listed applications.