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CHEVROLET® 348, 409, Raised Script and Fins
    CHEVROLET® 348, 409, Raised Script and Fins
    Purchase CHEVROLET® 348, 409, Raised Script and Fins
    • CHEVROLET® 348, 409, Raised Script and Fins
      Part Number 10651

    • Price for set of 2 covers. Includes mounting bolts. Gaskets, not included, are available, Gasket for Chevy 348, 409 Valve Covers. Price varies with finish. 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.

    Overall, these valve covers are about a 1/2 inch taller than stock.

    Number of Bolts: 6 mounting bolts per cover, on the perimeter

    Finishes: Read about finishes and construction of PML parts.

    PML designed these valve covers for the classic hot rods of the 1950s and 1960s with the 348 or 409 Chevy™ W block engine. The CHEVROLET script and fins are cast into the cover and raised for a classic look.

    Benefits:

    • Classic styling with CHEVROLET script and fins
    • Heavy duty sand cast aluminum construction
    • Thick walls provide strength
    • Gasket flange will not bend or flex when bolts are tightened
    • Licensed GM product
    • Made in USA

    The script and fins are cast into the covers and are raised. On powder coat finishes, the powder coating is brushed off the top so the lettering and fins stand out. On the polish finish, we do not polish between the fins and script to add contrast.

    PML also makes 348, 409 valve covers without script or fins for engines needing a clean, unbranded design that can be customized.

    We have two set and one single on SPECIAL: Special 229 (single), Special 312 (set in polish finish), and Special 412 (set in polish finish)

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

    PML designed these valve covers for Chevy™ 348 or 409 W block engines.

    PML fits each valve cover made on a 348 stock head during manufacturing. This verifies that the covers fit.

    PML covers are heavy duty with thick walls and are larger than stock. Always check your configuration to make sure you have space for larger valve covers.

    PML valve covers have been installed on a many restorations and classics. Our thanks to those who have emailed us about their restorations and allowed us to share their pictures.

    Counting Cars, Season 9, Episode 3, Big Love Buick

    Buick restomod on TV show Counting Cars Click on image to view larger.
    A custom Buick renovation by Counts Kustoms in the TV show, "Counting Cars", uses a Chevy 409 engine with PML valve covers. This beautiful restomod will be auctioned to raise money for NFT2, a rare disease.

    Watch the episode on Facebook tv: Big Love Buick on Facebook TV

    See it on YouTube: Big Love Buick on YouTube

    1955 Nomad

    Classic Car Studio (www.ClassicCarStudio.com) restored this 1955 Chevy Nomad , "Gone Mad". For the engine, they used a World/BMP 509 aluminum block with PML valve covers.

    1955 Chevrolet Nomad  1955 Chevrolet Nomad, 509 engine  1955 Chevrolet Nomad with PML valve covers  1955 Chevrolet Nomad at SEMA Show 2016 PML valve covers installed
    Click on image to view larger.

    1964 Corvette

    Andy at Edwards Design and Fab "had to have a pair" of PML valve covers for his 1964 Corvette Coupe. The valve covers are in polish finish.

    The engine is a 440 cubic inch 409 wth Hilborn fuel injection, Edelbrock heads, eagle crank, H-beam rods, custom ground roller cam and Billet Specialties pulleys. They machined the stacks and the thermostat housing.

    PML Chevy 348, 409 Valve Covers on an 440 409 engine    PML Chevy 348, 409 Valve Covers on an 440 409 engine
    Click on image to view larger in a separate window.

    1961 Impala

    PML Chevy 348, 409 Valve Covers on an Impala  Click on image to view larger.

    Ken sent us a picture of our valve covers on his 1961 Chevrolet Impala.

    He purchased these PML valve covers in polish finish and customized them with orange paint on top of the CHEVROLET script to highlight the classic Chevrolet orange color in the engine.

    1928 Ford

    Valve Covers on a hot rod  Click on image to view larger.

    John Stewart shared this picture of PML 348, 409 valve covers on his 1928 Ford sedan with a 1932 Ford grille. The valve covers are in the black powder coat finish.

    Impala SS at Cruisin' For a Cure Car Show

    We saw this beauty at the Cruisin for a Cure car show in Costa Mesa, CA, in 2011.

    Chevrolet Impala at Cruisin for a Cure car show    Chevrolet Impala with PML 348 409 valve covers, driver's side    Chevrolet Impala with PML 348 409 valve covers
    Click on image to view larger.

    Inside of Valve Covers

    PML 348, 409 valve covers have an open interior. This allows space for some roller rocker systems. PML valve covers are heavy duty with thick walls and larger than stock so always check clearance for larger covers.

    Inside of PML 348, 409 Valve Covers  Click on image to view larger.

    Fit on Cylinder Head

    PML fits all valve covers on a cylinder head.

    348, 409 cylinder heads have posts on the intake manifold side near the bolt holes. The height varies from head to head. Sometimes these posts have been machined off. PML valve covers have recessed areas for these posts. Rarely, a cylinder head will have posts that are large and do not fit in the recessed areas. We have only heard of this on a few 409 heads. The recessed area is 5/16 (0.31) inch below the flange surface.

    348 cylinder head   Post area inside of PML 348, 409 Valve Covers   409 cylinder head   valve cover area for post
    Click on image to view larger.

    Included with Valve Covers

    PML provides mounting hardware with the covers.

    PML covers and bolt package  Click on image to view larger.

    Gaskets

    Gaskets are not included with these valve covers. PML recommends cork composite gaskets for these valve covers. Some trimming may be needed to make a gasket fit correctly.

    PML offers cork composite gaskets for these valve covers. The PML gaskets are 0.180 inch thick.

    Gaskets for 348, 409 valve covers Gaskets for Chevy 348, 409 valve covers    348, 409 gaskets on PML valve covers, side view Gaskets for Chevy 348, 409 valve covers on PML valve covers, view shows gasket thickness    348, 409 gaskets on PML valve covers, top view Gaskets for Chevy 348, 409 valve covers on PML valve covers

    PML Valve Covers Compared to Stock

    PML Valve Cover Part Number 10651 compared to stock   PML Valve Cover Part Number 10651, 
compared to stock, front view
    Click on image to view larger in a new tab or window.