The small block Chevy engine, a legendary powerplant, has captivated enthusiasts for decades. A crucial, yet often overlooked, component is the valve cover. More than just a protective shield, valve covers contribute to the engine's aesthetic appeal and can even impact performance. This guide delves into the world of small block Chevy valve covers, exploring different types, considerations for selection, and common questions.
What are the different types of small block Chevy valve covers?
Small block Chevy valve covers come in a vast array of styles, materials, and finishes, catering to various needs and preferences. The most common distinctions lie in their material (aluminum or steel), height (tall or low profile), and finish (polished, textured, powder-coated).
-
Aluminum Valve Covers: These are popular for their lightweight nature, contributing to reduced engine weight and potentially improved performance. They often feature attractive finishes and are easier to modify. However, they can be more expensive than steel counterparts.
-
Steel Valve Covers: Steel valve covers are more durable and resistant to damage compared to aluminum. They're generally less expensive but can be heavier. They are a good choice for those prioritizing durability over weight savings.
-
Height: Valve cover height is a significant consideration. Low-profile valve covers are ideal for applications with limited clearance, such as vehicles with aftermarket headers or other modifications. Tall valve covers, on the other hand, offer more space for modifications such as breathers or PCV systems.
-
Finishes: Valve covers are available in a variety of finishes to match the overall aesthetic of the engine bay. Popular choices include polished aluminum for a show-car look, wrinkle black powder coating for a more rugged appearance, or custom painted finishes for personalized styling.
What are the benefits of upgrading my small block Chevy valve covers?
Upgrading your valve covers can offer several benefits beyond aesthetics:
-
Improved PCV System Functionality: Some aftermarket valve covers feature improved PCV (positive crankcase ventilation) systems, promoting better engine breathing and reducing the build-up of harmful gases.
-
Increased Oil Capacity: Certain valve covers have a larger oil capacity, reducing the frequency of oil changes and providing better lubrication.
-
Enhanced Appearance: This is arguably the most common reason for upgrading. Upgraded valve covers can dramatically improve the engine bay's look, enhancing the overall aesthetic of the vehicle.
-
Breather Integration: Some valve covers come with integrated breathers or offer provisions for adding them, improving engine ventilation.
What size valve covers do I need for my small block Chevy?
The size of valve covers needed depends on the specific year and model of your small block Chevy engine. Generally, small block Chevys use either 1962-1985 style or 1986-later style valve covers, but this can vary. Before purchasing, consult a parts catalog or your engine's specifications to ensure you're getting the correct size. Incorrect valve covers may not fit properly and can lead to leaks or other issues.
How do I install small block Chevy valve covers?
Installing small block Chevy valve covers typically involves removing the old covers, cleaning the valve cover gasket surfaces, applying a new gasket, and then carefully securing the new covers with bolts. Always refer to a workshop manual or online resources specific to your engine for detailed instructions and torque specifications. Improper installation can lead to leaks or damage.
Can I use any valve covers on my small block Chevy?
No. Not all valve covers are compatible with all small block Chevy engines. As mentioned before, the year and specific engine model determine the appropriate valve cover type. Some aftermarket valve covers may require modifications or additional parts for proper installation. Always verify compatibility before purchasing.
What is the difference between stock and aftermarket small block Chevy valve covers?
Stock valve covers are the original equipment manufacturer (OEM) parts. Aftermarket valve covers offer a wider variety of styles, finishes, and features, often exceeding the capabilities of the stock units. Aftermarket valve covers often offer improvements to PCV systems, increased oil capacity, and aesthetic enhancements. The choice depends on your needs and preferences.
This guide provides a foundation for understanding small block Chevy valve covers. Remember to always consult your vehicle’s specific specifications and seek professional help if needed. Choosing the right valve covers can significantly improve your engine’s performance, aesthetics, and overall maintenance.
