BCBC V1340 Engine Exhaust Valve

Engine Exhaust Valve Overview

The Melling V1340 is a standard replacement engine exhaust valve built for select classic GM applications. It combines steel construction, a coated finish, and precise dimensions to support consistent sealing and heat management in the valve train.

Fits 1973-1977 Oldsmobile Omega, N/A. Fits 1975-1980 Buick LeSabre, N/A. Fits 1975-1977 Buick Century, N/A. Fits 1975-1977 Buick Regal, N/A. Fits 1975-1976 Buick Skylark, N/A. Fits 1975 Buick Apollo, N/A. Fits 1976-1980 Buick Electra, N/A. Fits 1977-1978 Buick Riviera, N/A. Fits 1978-1980 Buick Estate Wagon, N/A. Fits 1975-1980 Pontiac Bonneville, N/A. Fits 1978-1980 Pontiac Catalina, N/A. Fits 1978-1980 Pontiac Laurentian, N/A. Fits 1975-1976 Pontiac Ventura, N/A. Fits 1975 Pontiac Firebird, N/A. Fits 1975 Pontiac Grand Am, N/A. Fits 1975 Pontiac Grand LeMans, N/A. Fits 1975 Pontiac LeMans, N/A.

Key Features

• Steel valve construction for exhaust-side durability.
• Coated finish for added surface protection.
• Standard replacement grade for service work and rebuilds.
• 45-degree seat angle for proper valve seating geometry.
• 1.55 in. valve head diameter, 5.016 in. overall length, and 0.372 in. stem diameter.

Detailed Description

Melling V1340 exhaust valve is engineered for applications that require accurate valve timing, dependable sealing, and resistance to exhaust heat. The steel body and coated finish support long-term service in engines that need a direct replacement exhaust valve with controlled dimensions and consistent fit. This part number, V1340, is listed for a range of Buick, Pontiac, and Oldsmobile models from the 1970s and early 1980s, including Buick LeSabre, Pontiac Bonneville, and Oldsmobile Omega applications. The V1340 is also cross-referenced to select interchange numbers for the same application.

What It Is Used For

• Replacing a worn or heat-damaged exhaust valve.
• Restoring compression loss caused by poor valve sealing.
• Addressing exhaust valve wear during engine rebuilds.
• Correcting valve train issues tied to stem or head wear.

Installation Notes and Tips

Verify valve head diameter, stem diameter, length, and seat angle before installation. Match the valve to the cylinder head and guide dimensions specified for the engine. Professional machine work is recommended during rebuilds to confirm seat condition and proper valve sealing.

Quality Assurance

Melling states that this valve is made in the USA and produced with precision manufacturing methods and selected alloy materials for durable performance. The V1340 is built to meet the specifications expected for standard replacement service.