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BUICK® Nailhead V8 Smooth Side Valve Covers

Part Number 11080-1

PML Buick Nailhead V8 Valve Covers, Top Fins, As-Cast PML Buick Nailhead V8 Valve Covers, Top Fins, Polished
As-cast finish
$360 (set of 2)
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Polished finish
$595 (set of 2)
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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 and feature classic styling. The fins are cast-in (not engraved) and are rise over a quarter of an inch above the surface. Much thicker and stiffer than stock, these valve covers will not bend or flex and will make a secure, leak-free seal.

On the powder coat finish, the powder coat is shaved off the top of the fins.

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

PML manufactures Buick Nailhead V8 valve covers with BUICK script and fins. PML also offers valley plates, spark plug wire covers and oil pans for the Nailhead V8. Please see our Buick Nailhead V8 Products.

We have one set of these valve covers on SPECIAL.


For gaskets, PML designed these Nailhead Buick valve covers to work with stock 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.

Holes to accommodate PCV, oil fill and breathers can be machined if needed in three possible locations on these PML valve covers. The interior has reinforced rings for custom machining when needed. An oil cap is also available.

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

PML has a machine shop on-site and can machine holes for $45.00 per hole. Please call to order machining and let us know the specifications for your hole(s).

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 for $45.00 per groove. Please call to order machining.

PML Valve Covers Compared to Stock

PML Valve Covers Part Number 11080-1 height compared to stock  PML Valve Covers Part Number 11080-1, compared to stock
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These images show a PML valve cover compared to the stock cover. The outside dimensions are shown. The distance to the gasket surface maybe different. See the link below the "Buy Now" button for more information on dimensions.

Other PML products for Buick Nailhead V8

Installation on a 1930 Ford Coupe

Bob's 1930 Ford Coupe project included a 1965 Buick Nailhead 425 engine. To dress it up, he installed PML valve covers, oil pan and valley plate cover. Because he has the TA roller rockers and push rods, he had PML machine the inside of the the valve covers for clearance. Our thanks to Bob for choosing PML for his project.

1930 Ford Coupe   PML engine oil pan on a Buick Nailhead 425 engine   PML valve covers installed on Buick 425 engine for a 1930 Ford Coupe
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PML Valve Cover Features:

  • Strong sand-cast aluminum construction
  • Thick side walls and gasket flanges that will not bend when bolts are tightened
  • Mounting hardware included

Learn more about finishes and construction of PML parts.

General Motors Trademarks are used under license to PML, Inc.