BCBC VS-1120 Engine Valve Spring

Engine valve spring for performance and stock use

Melling VS-1120 is a standard replacement engine valve spring built for a wide range of Chrysler, Dodge, and Plymouth applications. It uses corrosion-resistant steel and a dual-spring design to support consistent valve control in street, OEM, and performance builds.

Key features

• Corrosion-resistant steel construction for durable service life
• Dual spring design for stable valve control
• Standard replacement grade for stock-style service
• Installed height: 1.65 in. (42.0 mm)
• Installed pressure: 96.0
• Open pressure: 238.0
• Coil bind height: 1.1 in. (28.0 mm)
• Spring open height: 1.22 in. (31.0 mm)
• Inside diameter: 1.08 in. (27.0 mm)
• Outside diameter: 1.494 in. (38.0 mm)

This Melling valve spring is part of the Stock product line and is engineered for applications that need a standard replacement spring with defined pressure and height specifications. It is used across many classic Chrysler, Dodge, and Plymouth engines, including fitments such as Fits 1983-1989 Chrysler Fifth Avenue, N/A; Fits 1977-1989 Dodge Diplomat, N/A; and Fits 1964-1973 Plymouth Barracuda, N/A. Part number VS-1120 is also referenced by GMB 160-1150 for the same application.

What it is used for

• Replacing worn valve springs that no longer hold proper pressure
• Restoring valve train control in stock and mild performance engines
• Addressing valve float caused by weak or fatigued springs
• Matching a spring specification for MTD-1 camshaft applications
• Supporting consistent valve operation in classic Chrysler-family engines

Installation notes and tips

Verify installed height, coil bind clearance, and spring pressure before installation. This part number VS-1120 is listed for many applications with the note “Use With MTD-1 Camshaft” or “Except California Emissions; Stock,” so confirm the exact engine and emissions configuration before ordering. Fitment includes Chrysler, Dodge, and Plymouth models across multiple years, and the correct spring specification should be matched to the camshaft and valvetrain setup.

Quality assurance

Melling offers valve springs across standard, mid-range, heavy-duty, and race-ready applications, with multiple wire sizes, materials, and spring pressures available. VS-1120 follows that product range with a standard replacement design and published dimensional and pressure specifications for application matching.