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CADILLAC® 331, 365, 390, 429
    CADILLAC® 331, 365, 390, 429
    Purchase CADILLAC® 331, 365, 390, 429
    • CADILLAC® 331, 365, 390, 429
      Part Number 11073

    • Price for set of 2 covers. Includes mounting bolts. Does not include gaskets.
      *See Gasket for PML Cadillac 331, 365, 390, 429 Valve Covers to order gaskets for these valve covers.

      SEE PRODUCT INFO.

      $0.00

    • By clicking ADD TO CART, you confirm that you checked fitment and acknowledge PML valve covers Finish and Construction is different from OEM.

       

    Dimensions: Click here for dimensions. There is 2.48" from the gasket surface to the top inside surface. On the outside, check for clearance with air conditioner, bracket, heating, cruise control and other parts.

    Finishes: Read about finishes and construction of PML parts.

    These PML heavy duty valve covers offer classic styling and extra space for many roller rockers systems.

    The CADILLAC script and fins are cast into the cover and raised (not engraved). The script replicates the 1949 GM CADILLAC logo. To highlight the CADILLAC script, powder coat is brushed off the top of the script and fins on the black powder coat finish, and on polished parts, we do not polish between the fins and the script.

    Benefits:

    • Classic CADILLAC script and fin design
    • For 331, 365, 390 and 429 Cadillac engines
    • Heavy duty, sand cast aluminum construciton for thick, stiff, walls and gasket flange
    • Machined gasket surface for a secure seal
    • Extra height and pockets for many roller rocker systems
    • Licensed GM product
    • Made in USA

    We have one set of these valve covers on SPECIAL.

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

    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.

    These are larger than stock and not intended to be bolt on replacements for the stock covers.

    Engine Considerations

    1. 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.

    2. 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.

    3. These valve covers are taller than stock with pockets to work with many roller rocker systems. Be sure to check clearance on the inside and outside for your particular engine configuration.

    4. Stock engines may have air conditioners, heaters, cruise control units or other items close to the stock cover so these larger PML covers may not fit without modification. Click here for dimensions of PML Cadillac 331, 365, 390, 429 valve covers. On some stock engines,the compressor bracket hits our cover.

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

    6. See Specifications for gasket information.

    Our thanks to those who have emailed us pictures of their Cadillacs and our valve covers. Additionally, we have spotted our Cadillac valve covers installed on some beautiful restorations at car shows.

    1957 Sixty Special

    Sten in Denmark emailed us these pictures of his 1957 Sixty Special. He dressed up the Cadillac 365 engine with these PML valve covers in the cast finish.

    1957 Sixty Special 365 engine with PML covers PML valve covers on 1957 Sixty Special 365   1957 Cadillac Sixty Special 1957 Cadillac Sixty Special   Passenger side view of PML covers on a 365 engine Passenger side view of PML covers on a Cadillac 365 engine in a 1957 Sixty Special   Driver side view of Cadillac 365
engine with PML valve covers Passenger side view of PML covers on a Cadillac 365 engine in a 1957 Sixty Special
    Click on image to view larger in a new tab or window.

    1960 Cadillac

    The pictures below are of a 1960 Cadillac 2 door hard top with a 390 engine in Finland. The PML valve covers are in the natural cast finish. The owner decided to polish the top of the fins and script to give a little shine to the engine.

    1960 Cadillac with PML valve covers   1960 Cadillac, PML valve covers, driver's side   1960 Cadillac, PML valve covers, passenger's side  
    Click on image to view larger.

    1960 Cadillac Series 62

    For a completely custom look, the customer purchased the cast finish, removed the fins above and below the CADILLAC script, then hand polished the covers.

    Cadillac Series 62 and owner Owner and his restored Cadillac Series 62   Cadillac Series 62 Cadillac Series 62   Cadillac Series 62, engine, driver side Cadillac Series 62, driver side of engine   Cadillac Series 62, engine, passenger side Cadillac Series 62, passenger side of engine
    Click on image to view larger in a new tab or window.
    Grand National Roadster Show 2020

    1961 Cadillac

    The pictures below are of Brent and Dana's 1961 Caddy at the SEMA show in November 2010.
    1961 Cadillac with PML valve covers, whole car   1961 Cadillac with PML valve covers, driver's side   1961 Cadillac with PML valve covers, passenger's side  

    Roadster

    Roadster with PML valve Covers   PML valve Covers on a Roadster, drivers's side   Click on images to view larger

    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.
    1952 Allard with PML valve covers    Additional pictures in our Facebook album.

    Click on image to view larger

    Cad 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.

    1961 Cadillac with PML valve covers, whole car   1961 Cadillac with PML valve covers, driver's side   1961 Cadillac with PML valve covers, passenger's side   1961 Cadillac with PML valve covers, passenger's side
    Click on images to view larger

    1963 Cadillac Series 62

    Mark installed these valve covers on his 1963 Cadillac Series 62 with a 390 engine.

    1962 Cadillac Series 62   1962 Cadillac Series 62 stock valve covers in engine   1962 Cadillac Series 62 390 engine right hand view   PML valve covers on 390 engine in a 
1962 Cadillac Series 62
    Click on image to view larger in a new tab or window.

    Inside of PML CADILLAC Valve Covers

    PML Cadillac Valve Covers, Fins and Script, Inside  Inside of covers. Click on picture to view larger in a separate window or tab.

    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.

    Gaskets

    PML designed these Cadillac valve covers to work with many stock gaskets. There are five different gaskets available. Later year gaskets (after 1955) may not work with these covers.

    We recommend using the 1949 to 1955 4-bolt gaskets. PML sells gaskets for these valve covers. Also, some of our customers have reported that FelPro part number 5392 gaskets work well with these valve covers.

    These are pictures of the cork composite gaskets PML offers. These can be added to an order over the phone or in the shopping cart.

    Gaskets for PML Cadillac valve covers Gaskets for PML Cadillac valve covers, click to view larger image    Gasket on PML Cadillac valve cover Gasket on PML Cadillac valve covers, click to view larger image
    Click on an image to view larger in a separate tab or window.

    PML Valve Covers Compared to Stock

    PML Valve Cover Part Number 11073 compared to stock   PML Valve Cover Part Number 11073, compared to stock, top view
    Click on image to view larger in a new tab or window.