Chevy Small Block Long Bolt Fabricated Aluminum Valve Covers with Breather Holes - Polished

• Fits universal valve cover breather, PCV, and crankcase ventilation applications

• Fabricated Aluminum construction with polished finish and 1/4 In. sealing rail for strength, durability, and leak resistance

• Breather holes

• Hardware varies by application; verify gasket type; check rocker, coil, hood, and breather clearance before installation

Chevy Small Block Long Bolt Fabricated Aluminum Valve Covers with Breather Holes Polished for Sealing, Clearance, and Engine Bay Detail

These Chevrolet Small Block Perimeter-Bolt valve covers are built around the details buyers search for most: fitment, valve cover height, material, finish, ventilation, and sealing. The tall profile, perimeter-bolt mounting style, and plain top style help match the cover to the correct engine build and clearance requirements.

Fabricated Aluminum construction with a polished finish improves durability and engine bay appearance while supporting breather hole provisions for crankcase ventilation and internal baffling for oil control. Gasket and mounting hardware are not included — match these to your application so the covers seal correctly and install cleanly.

What applications are these valve covers compatible with?
These valve covers are designed for Chevrolet Small Block Gen I V8 engines, including the 265, 267, 283, 302, 305, 307, 327, 350, and 400 CID applications equipped with perimeter-bolt cylinder heads through 1986.

Will these valve covers fit my engine?
These valve covers are designed for Chevrolet Small Block Gen I engines with perimeter-bolt cylinder heads. Verify that your cylinder heads use the standard perimeter-bolt valve cover pattern and that your valvetrain configuration provides adequate clearance before ordering.

What do valve covers do?
Valve covers seal the top of the cylinder heads to protect the valvetrain from dirt and debris while containing engine oil and helping prevent leaks.

What material are these valve covers made from?
These valve covers are manufactured from fabricated aluminum, providing excellent strength, reduced weight, and improved heat dissipation compared to factory stamped steel valve covers.

What finish do these valve covers have?
These valve covers feature a polished finish that provides a bright, show-quality appearance and enhanced corrosion resistance.

How tall are these valve covers?
These valve covers feature a tall-profile design that provides additional clearance for many aftermarket roller rocker arms, shaft rocker systems, and other high-performance valvetrain components.

Are these valve covers baffled?
Yes. These valve covers feature internal baffling to help control oil movement inside the valve cover and reduce the amount of oil reaching the breather or PCV system during engine operation.

Do I need gaskets for installation?
Yes. Valve cover gaskets are required for installation and are not included with this set.

Do I need hardware for installation?
Yes. Mounting hardware is not included and must be purchased separately.

Will these valve covers help prevent oil leaks?
Yes. When installed correctly with properly matched valve cover gaskets on clean sealing surfaces, these valve covers are designed to provide a reliable seal and help prevent oil leaks.

Are these valve covers a good upgrade over stock?
Yes. These fabricated aluminum valve covers provide increased durability, reduced weight, additional valvetrain clearance, and a premium polished appearance, making them an excellent upgrade for restoration, street performance, racing, and custom engine builds.

Can these valve covers be used in performance builds?
Yes. These valve covers are ideal for street performance, racing, engine swaps, and custom Small Block Chevy builds where additional valvetrain clearance, reduced weight, and durable fabricated aluminum construction are desired.