GM PERFORMANCE Valve Covers VC-485

( Brand: Gm Performance ), ( Manufacturer Part Number: VC485 ), ( Type: Valve Cover ), ( Fitment Type: Performance/custom ), ( Material: Aluminum ), ( Country Of Origin: United States )

Review GM PERFORMANCE Oldsmobile Aluminum Valve Covers Olds fits 350 400 425 455

Introducing the GM Performance Aluminum Valve Covers VC-485, a high-performance upgrade for Oldsmobile engines with a displacement of 350, 400, 425, or 455 cubic inches. These valve covers are engineered to provide superior cooling and durability, making them an excellent choice for enthusiasts seeking to enhance their Oldsmobile's engine compartment.

The VC-485 Olds valve covers are made from lightweight and robust aluminum, which is not only stronger than the factory-issued covers but also offers better heat dissipation. The aluminum construction ensures that these covers remain cooler during prolonged high-performance driving, preventing the engine from overheating and improving overall engine efficiency.

These GM Performance valve covers come with a built-in breather system, which is designed to provide better sealing and control of crankcase gases. The breather system includes a 1-inch breather port and a 3/8-inch NPT breather connection, allowing for easy installation and integration with aftermarket intake systems or custom breather setups.

The VC-485 valve covers feature a smooth, polished finish that not only looks great but also provides excellent resistance to corrosion and wear. The covers come with new gaskets and hardware, ensuring a perfect fit and easy installation. Additionally, the covers are designed to work seamlessly with factory emissions equipment, making them a suitable choice for both street and racing applications.

The GM Performance Aluminum Valve Covers VC-485 are a direct replacement for the factory covers and are suitable for Oldsmobile models such as the Cutlass 442, Toronado, and 442 W-30. These covers are an excellent investment for those looking to upgrade their Oldsmobile engine's appearance and performance, providing improved cooling, durability, and a polished, high-performance look.

GM Performance VC-485 Oldsmobile Valve Covers: Pros and Cons

The GM Performance VC-485 Oldsmobile Valve Covers are aftermarket parts designed to replace the original valve covers on Oldsmobile engines, including 350, 400, 425, and 455 models. Here are some potential advantages and disadvantages of buying these valve covers:

1. Enhanced appearance: The VC-485 valve covers feature a polished aluminum finish, which can improve the visual appeal of your Oldsmobile engine.

2. Improved sealing: These valve covers come with new gaskets and seals, which can help prevent oil leaks and improve engine performance.

3. Better cooling: The VC-485 valve covers have increased capacity for cooling oil, which can help maintain optimal engine temperature and prolong the life of the engine.

4. OE-style design: These valve covers are designed to fit and function like original Oldsmobile valve covers, making for a straightforward installation process.

1. Cost: Aftermarket valve covers can be more expensive than OE parts, and the VC-485 valve covers are no exception.

2. Potential fitment issues: While these valve covers are designed to fit Oldsmobile engines, some users have reported fitment issues, particularly with engines that have been modified.

3. Installation complexity: Installing aftermarket valve covers can be more complex than installing OE parts, and the VC-485 valve covers may require additional steps to ensure proper installation.

The GM Performance VC-485 Oldsmobile Valve Covers offer several advantages, including improved appearance, sealing, and cooling. However, they come with some potential disadvantages, such as cost, fitment issues, and installation complexity. Ultimately, whether or not to purchase these valve covers depends on your personal priorities and budget. If you value the enhanced appearance and improved performance, the VC-485 valve covers may be worth the investment. However, if you're on a tight budget or prefer a more straightforward installation process, you may want to consider OE valve covers instead.

If you're considering purchasing the GM Performance VC-485 Oldsmobile Valve Covers, we recommend doing thorough research and consulting with a knowledgeable mechanic or parts supplier to ensure that these valve covers are the best fit for your specific engine and budget. Additionally, make sure to follow all installation instructions carefully to avoid any potential issues.

Details:

Rare GM Performance Parts finned aluminum Oldsmobile valve covers, part number VC-485. They remain very clean inside and out. Important Fitment Note: These valve covers are taller than factory Oldsmobile and may interfere with some brake booster or HVAC box combinations depending on vehicle application engine setup. These are genuine Oldsmobile Performance valve covers designed for taller aftermarket valve train clearance and becoming increasingly difficult to find.

Genuine GM Performance Parts VC-485 valve covers. Finned cast aluminum construction. These covers are in very nice condition overall and were previously mocked up/test fitted but never run long-term service.

part #: vc485 prices

• $349.99-$600.00

specifications rockercove:

• for models: 350, 400, 425, 455
• for makes: Oldsmobile, Olds
• brand: Gm Performance
• mpn: Vc485
• type: Valve Cover
• fitment type: Performance/custom
• material: Aluminum
• country of origin: United States

seller rockercove:

• # reviews: 183
• city: Cedar Lake, Indiana
• rating: 100.0%

returns rockercove:

• policy: No Returns

general rockercove:

• condition: Used
• Engines Engine Parts > Valvetrain Components > Rocker Valve Covers

shipping rockercove:

• carrier: USPS
• type: Calculated
• class: Standard
• transit: 2-6 Days
• cost: $18.63
• service: USPS Ground Advantage

payments rockercove:

• other
• credit card: Discover
• wallet: Paypal

offer rockercove:

• started: May 26, 2026
• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home

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