BCBC VS-140 Engine Valve Spring - Intake

Engine Valve Spring Overview

Melling VS-140 is a standard replacement engine valve spring for a wide range of classic Ford, Mercury, and Edsel applications. It is built for stock-style service and performance use where consistent valve control matters.

This valve spring is a fitment-based replacement for many vintage Ford and Mercury engines, including applications such as the Ford Mustang, Ford Falcon, and Mercury Comet. The VS-140 part number is also useful when matching an OE-style spring for stock rebuilds and period-correct engine service.

Key Features

• Standard replacement valve spring for stock and performance engine builds
• Single-spring design for straightforward valvetrain service
• Corrosion-resistant steel construction
• Installed height: 1.78 in. (45.0 mm)
• Installed pressure: 75.0
• Open pressure: 169.0
• Coil bind height: 1.3 in. (33.0 mm)
• Spring open height: 1.39 in. (35.0 mm)
• Inside diameter: 1.0 in. (25.0 mm)
• Outside diameter: 1.354 in. (34.0 mm)

Detailed Description

The Melling VS-140 is a single valve spring in the Stock line, engineered as a standard replacement for classic engine applications. Its corrosion-resistant steel construction and defined pressure and height specifications make it suitable for rebuilds that require controlled valve motion and consistent spring load. The VS-140 part number is commonly referenced for vintage Ford and Mercury engines, including Ford Mustang, Ford Galaxie, and Mercury Monterey applications.

Melling’s spring lineup covers standard, mid-range, heavy-duty, and race-ready needs, with designs that include standard and dual springs, with and without dampers, plus beehive styles. VS-140 belongs to that broader product range as a stock-style single spring for engines that need a direct replacement approach rather than a custom valvetrain setup.

What It Helps Address

• Weak or fatigued valve spring tension
• Inconsistent valve control during engine operation
• Spring replacement during stock engine rebuilds
• Wear-related valvetrain service on classic Ford and Mercury engines

Installation Notes and Tips

Verify installed height, coil bind clearance, and spring pressure before installation. This part is listed for stock applications and specific engine combinations, including some notes that reference use with the SYB-9 camshaft or a changeover point to L10. Confirm the engine build and valvetrain specifications before ordering. Fitment includes many classic Ford and Mercury models, with some entries marked Intake or N/A in the catalog data.

Quality Assurance

Melling supplies valve springs across street, circle track, OEM replacement, and drag race applications. The VS-140 is part of the Stock line and is built to meet standard replacement requirements for classic engine service.