BUICK Nailhead V8 Smooth Side Valve Covers

Retail Price: $549.25
Price: $422.50 ea
  • SKU11080-1
- +

These PML Nailhead BUICK V8 valve covers are designed for 1953 to 1966 Buick 264, 322, 364, 401 and 425 engines.

These valve covers are larger than stock so check for clearance for larger valve covers.

PCV, breather and oil fill holes are OPTIONAL. The covers are made without holes but holes can be machined to order. See Specifications.

Dimensions: Click here for an image of the dimensions. A new tab or window will open.

Finishes: Read about finishes and construction of PML parts.

These PML Nailhead BUICK V8 valve covers are designed for 1953 to 1966 Buick 264, 322, 364, 401 and 425 engines. PML valve covers are heavy duty sand cast aluminum and feature classic styling.


  • Smooth sides for clean appearance
  • Fins on top are cast in (not engraved) and over a quarter of an inch tall
  • Thick wall construction so covers are stiffer than stock
  • No bend or flex for a secure seal
  • Taller than stock for some roller rocker systems

These valve covers mount with two bolts per cover, included.

PML also manufactures Nailhead V8 valve covers with BUICK script and fins, valley plates, spark plug wire covers, and oil pans.


Gaskets are not included with these valve covers.  PML designed these Nailhead Buick valve covers to work with both stock gaskets and cork composite gaskets.  

Optional PCV, Breather, Oil Fill Holes

These covers can work with many applications. Some applications use the valley plate for PCV, oil fill and breathers. Some applications use the valve covers.

These valve covers can be machined with holes to accommodate PCV, oil fill and breathers if needed. There are three possible locations. The interior has reinforced rings for machining.

  Click on image to view larger.

This is custom machining. PML has a machined shop on site and can machines these valve covers to order. Please call to discuss configuration needed and pricing.

An oil cap is also available.

Read this PDF file on PML Nailhead Valve Covers Machining Options for pictures and more information.

Optional Machining for Roller Rocker Arms

Some engine builds use large roller rocker arms. Customers have reported that sometimes there can be contact with the front side wall of the valve cover. Because PML covers are heavy duty, we can machine a groove to add clearance. This is approximately a one inch wide groove about one inch down from the gasket surface.

PML Nailhead Valve Covers modified for large rocker arms

PML has a machine shop on site and can machine this groove if needed. Please call to order machining.

PML Valve Covers Compared to Stock

PML Valve Cover Part Number 11080-1 compared to stock   PML Valve Cover Part Number 11080-1, 
compared to stock, top view
Click on image to view larger in a new tab or window.