CADILLAC® 331, 365, 390, 429
Valve Covers

P/N 11073

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Dimensions: Click here for dimensions of PML Cadillac 331, 365, 390, 429 valve covers. There is 2.48" from the gasket surface to the top inside surface. On the outside, check for clearance with air conditionering, heating, cruise control and other parts.

Finishes: Read about finishes and construction of PML parts.

These PML Cadillac valve covers are designed for 1949 to 1967 Cadillacs with 331, 365, 390, and 429 V8 engines with four bolt valve covers.

PML valve covers are heavy duty and feature classic styling. The fins and script are cast-in (not engraved). Much thicker and stiffer than stock, these valve covers have a machined gasket surface for a secure seal.

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

These valve covers are perimeter mount, with four bolts per cover, included. Some early engines require center bolt mounting and PML does not have valve covers for these engines.

For 1963 to 1967 390 and 429 engines, these valve covers will bolt onto the heads although the shape is different. You will need to use the earlier 1954 specified gasket to get the valve covers to seal on a 429 engine. The 429 gaskets will not work with these valve covers.

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PML Cadillac valve covers have an open interior and pockets to clear most roller rockers. The picture also shows the thick, precision-machined gasket flange and the four mounting holes on the perimeter.

Most applications breath through the valley plate so these valve covers do not incorporate a provision for breathers or PCV.

Gaskets

We recommend using the 1949 to 1955 4-bolt gaskets. For example, our customers have reported that FelPro part number 5392 gaskets work well with these valve covers. PML designed these Cadillac valve covers to work with stock gaskets, available at many auto parts retailers.

Note that there are five different gaskets available. Later year gaskets (after 1955) may not work with these covers. Gaskets are not included with the covers.

Installations

We have see our Cadillac vavle covers at shows installed on some beautiful restorations.

PML Cadillac Valve Covers on a 1961 Cadillac

The pictures below are of Brent and Dana's 1961 Caddy at the SEMA show in November 2010.
     

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PML Cadillac Valve Covers on a 1952 Allard

We took these pictures of a 1952 Allard J2X at the Grand National Roadster Show in January 2012. Lime Works Speed Shop did the restoration and the owner is Allan Beall. A 1953 Cadillac 331 cu. in. engine was installed and modified.
   Additional pictures in our Facebook album.

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PML Cadillac Valve Covers on the Impaler

We saw this 1934 Ford with a 331 Cadillac V8 at the Grand National Roadster Show in January 2013. The PML valve covers, in the polish finish, look great on the engine.

     
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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.