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Chevy™ Big Block, 396, 427, 454, 502, CORVETTE® Script, Tall
    Chevy™ Big Block, 396, 427, 454, 502, CORVETTE® Script, Tall
    Purchase Chevy™ Big Block, 396, 427, 454, 502, CORVETTE® Script, Tall
    • Chevy™ Big Block, 396, 427, 454, 502, CORVETTE® Script, Tall
      Part Number: vc-asm-11042

    • Price for set of 2 covers. Includes mounting bolts.
      Price varies with finish.

      READ MORE

      $0.00

    •  

    Dimensions: Click here for dimensions. A separate window will open. Please check for clearance issues with firewalls, brake bosters, alternator, air conditioning brackets, and the like.

    Finishes: Read about finishes and construction of PML parts.

    These tall, heavy duty valve covers from PML for big block Chevy engines feature raised CORVETTE script and fins and top quality construction. The classic CORVETTE script is licensed from General Motors.

    Benefits:

    • Traditional CORVETTE script and sand cast aluminum construction for an old-school look and feel
    • Taller than standard height and open interior to work with many roller rockers
    • No brake booster indent
    • PCV and oil fill/breather holes
    • Holes have internal baffles cast to reduce oil blow-by
    • Thick walls and gasket flanges for strength and a secure seal to the cylinder head

    Chevrolet big block engines include: 396, 427, 454, and the 502

    These valve covers are a bit taller than stock without oil drippers and no brake booster relief to fit over many roller rockers. Always verify clearance before ordering. Using double gaskets to add height frequently causes leaks. Customers have reported to us that PML tall valve covers eliminated the need for double gaskets and the leaks.

    For covers with a brake booster relief, see PML regular, standard height valve covers with CORVETTE script and fins, PML Part Number 9096.

    We have one set on SPECIAL in the polish finish.

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

    PML designed these valve covers using original GM cast iron heads. Chevrolet Big block engines include: 396, 427, 454, and the 502.

    These valve covers are taller than stock so check for space for larger valve covers.

    • 1930 Ford
    • 1963 Corvette
    • 1966 Corvette (625 HP)
    • 1966 Corvette
    • 1969 Corvette
    • 1970 Monte Carlos
    • 1973 Corvette

    1930 Ford

    Mike purchased PML valve covers for his big block engine on his 1930 Ford Five Window Coupe street rod. This street rod does not have have a hood or fenders, similar to the American Graffiti Deuce Coupe. He chose the CORVETTE script in the cast finish to be "slightly different". Our thanks to Mike for sharing his pictures and his comments.

    His cam is a 283 grind Thumpr from Comp Cams and the roller rockers are a generic kind, gold in color and very squared off. He uses a standard gaskets, not extra thick.

    To get the PML covers to fit, he rounded off the left side corners on two of the roller rockers. The valve covers fit great after grinding a bit off the roller rockers on #1 intake and #6 intake (one intake rocker on each side of engine). He did not remove any material from the valve covers. He was told later by an engine machinist that this procedure is virtually always necessary when you try to put roller rockers on a big block chevy.

    1930 Ford.    1930 Ford.    1930 Ford.
    Click on image to view larger.

    1963 Corvette

    These images show a restoration by Alloway's Hot Rod Shop. The engine is dressed up with these PML tall big block CORVETTE valve covers in the polish finish.

    Corvette with PML Valve Covers  Corvette with PML Valve Covers, passenger's side  Corvette with PML Valve Covers, driver's side
    Click on an image to view larger in a new tab or window.

    1966 Corvette (625 HP)

    David in Barrington, Illinois, installed these valve covers in the polish finish on his 1966 Corvette with a Chevy big block 625 HP engine. He emailed us "I love my valve covers!!"

    1966 Corvette, Big Block Engine, Passenger Side View 1966 Corvette, PML valve covers on Chevy big block engine, image shows passenger side   Driver side, PML valve covers on 1966 Corvette 1966 Corvette, PML valve covers on Chevy big block engine, image shows driver side
    Click on image to view larger in a new tab or window.

    1966 Corvette

    1966 Corvette 427 engine with PML valve covers   Click on image to view larger.

    Lou Cardoza Enterprises in Hawaii/Guam (808-238-1374) built this 427 engine for a 1966 Corvette and finished it off with PML tall big block valve covers in the polish finish.

    1969 Corvette

    This Corvette belongs to PML's owner and president. His 427 engine does not have roller rockers. He decided on these tall PML big block valve covers because he did not need the brake booster relief and liked the look. The valve covers were polished then he painted Chevrolet orange between the fins and script to match his Vette.

    1969 Corvette   1969 Corvette, with hood up   1969 Corvette with PML valve covers

    1969 Chevy Corvette PML Valve Covers Driver Side 2 Driver Side 2   1969 Chevy Corvette PML Valve Covers Passenger Side 1 Passenger Side 1   1969 Chevy Corvette PML Valve Covers Passenger Side 2 Passenger Side 2   1969 Chevy Corvette 1 Corvette 1
    Click on the image to view larger in a new tab or window.

    1970 Monte Carlo

    John Engle built a roller cam 454 topped with an MSD throttle body elecronic fuel injection unit, an American Billet belt drive kit, Vintage Air conditioning unit, and a Tremec TKO 600 5 speed transmission.

    John wanted the CORVETTE script to pop so he painted the background black using an Eastwood two-part epoxy paint.

    Our thanks to John for sharing the details of his build and pictures.

    1970 Monte Carlo 1970 Monte Carlo 427 with a Big Block Engine   Engine passenger side, 1970 Monte Carlo Passenger side of 1970 Monte Carlo big block engine   Engine driver side, 1970 Monte Carlo Driver side of 1970 Monte Carlos big block engine
    Click on image to view larger in a new tab or window.

    1973 Corvette

    Video slide show (short) has pictures of these PML valve covers, polish finish, installed on Chuck Younger's 1973 Corvette with a Chevrolet big block engine. Chuck's company is Walden and Younger Corvette Restorations out of Alabama.

    Breather and PCV Holes

    PML Chevy big block valve covers have PCV and oil fill/breather holes and baffles cast into the covers. The internal baffles help prevent oil blow-by out the PCV and breather holes.

    These holes work with standard 1 1/4 inch grommets.

    If desired, a breather cap with a 1 inch outer diameter tube can be used with the breather grommet.

    PML big block valve cover with breather installed Close up view showing that the PML Big Block Chevy valve cover has a good fit with grommet and chrome push-in breather cap installed   PML big block valve cover with breather and grommet, not installed PML Big Block Chevy valve cover, breather grommet, and chrome breather cap   Top view of PML big block valve cover with chrome breather PML Big Block Chevy valve cover, breather grommet and chrome breather cap installed, top view
    Click on small image to view larger image in a new tab or window.

    Checking Clearance

    Click for dimension. A separate window or tab will open.

    Engine configurations vary so please check for clearance for larger valve covers. The walls and gasket flange are thicker than stock and the fins and script add height to the top.

    Look for clearance on the inside also, especially if you have roller rockers. A simple check can be made if you have the stock valve cover. Set the stock cover on the head and measure the distance, if any, between the gasket flange surface and the head. This cover is approximately 3/8 to 1/2 inch taller than the stock cover. PML tall covers are approximately 3/8 inch taller than our standard height covers.

    Some customers have reported that their roller rockers contact the inside of these PML valve covers at corners. PML has heard that grinding a bit off the roller rockers on #1 intake and #6 intake, one intake rocker on each side of engine, can add enough clearance (but this is not something we have tried or endorse).

    Because these covers are larger than stock, on some Corvette engines, you may need to remove the alternator to install these covers. Accessing some of the bolts may be difficult.

    These valve covers do NOT have a relief for the brake booster. See are regular, standard height valve covers if a relief or indent for the brake booster is needed.

    Inside of Valve Covers

    Always check your engine configuration for clearance requirements before ordering.

    Inside of PML big block valve covers, tall, Corvette  Click on image to view larger.

    These valve covers feature an open interior for clearance for many roller rocker systems. There are no old drippers or brake booster relief for maximum internal height and space.

    The baffle for the PCV and breather holes is part of the casting. There are not any screws or plates to come loose.

    Flyer

    Click to view or print PML Big Block Valve Covers PDF Flyer. A separate window will open and load the pdf file.

    PML Valve Covers Compared to Stock

    PML Valve Cover Part Number 11042 compared to stock   PML Valve Cover Part Number 11042, 
compared to stock, top view
    Click on image to view larger in a new tab or window.