HOLLEY GM LICENSED VALVE COVER - MUSCLE SERIES - SBC - CENTER BOLT

Holley GM Muscle Series Valve Covers – Small Block Chevy ZZ6 / Vortec – Center Bolt – Emissions Provision – Cast Aluminum

Upgrade your Small Block Chevy with Holley GM Muscle Series Valve Covers, designed for ZZ6, ZZ4, ZZ5, and Vortec center bolt cylinder heads. Featuring a clean, modern design with raised Chevrolet and Bowtie logos, these valve covers offer a refined alternative to traditional OEM-style covers.

Constructed from high-quality die-cast aluminum, these SBC valve covers provide excellent durability, detailed finish quality, and reduced risk of warping or oil leaks. The increased internal height offers enhanced valvetrain clearance, making them suitable for both stock and performance applications.

Designed with emissions provisions, these valve covers include pre-installed internal baffling, along with oil fill and PCV grommets for proper crankcase ventilation—making them ideal for street-driven vehicles.

Perfect for restorations, street builds, and performance applications, these valve covers deliver modern styling with OEM-inspired fitment.

Key Features:

• Fits Small Block Chevy engines with center bolt heads (Vortec, ZZ4, ZZ5, ZZ6)
• GM licensed design with raised Chevrolet and Bowtie logos
• Clean, modern “Muscle Series” styling
• Emissions-compliant design with oil fill and PCV provisions
• Increased internal height for improved valvetrain clearance
• Durable die-cast aluminum construction
• Internally baffled for proper crankcase ventilation
• Designed to reduce warping and prevent oil leaks
• Includes polished mounting hardware
• Easy bolt-on installation
• Valve cover gaskets not included

Available Finishes:

• Natural Cast Aluminum (machined logo – paint-ready)
  
• Satin Black (machined logo)
• Factory Orange (machined logo)

Why Choose Holley GM Muscle Series Valve Covers?
Holley’s Muscle Series valve covers are ideal for enthusiasts who want a modern, clean engine bay without going over the top. Designed specifically for Vortec and ZZ-series Small Block Chevy engines, they offer improved clearance, proper ventilation, and bold Chevrolet branding—all in a simple bolt-on package.

Perfect for street performance builds, restomods, and daily-driven classics, these valve covers deliver the style and reliability your SBC deserves.