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Chevy™ Big Block, 396, 427, 454, 502, CORVETTE® Script
    Chevy™ Big Block, 396, 427, 454, 502, CORVETTE® Script
    Purchase Chevy™ Big Block, 396, 427, 454, 502, CORVETTE® Script
    • Chevy™ Big Block, 396, 427, 454, 502, CORVETTE® Script
      Part Number: vc-asm-9096

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

      $0.00

    •  

    Dimensions: Click here for a pdf file with dimensions. A separate window or tab will open.

    Finishes: Read about finishes and construction of PML parts.

    These 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 design
    • 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
    • Sand cast construction for an old-school look and feel

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

    PML also makes a tall height cover with out the brake booster indentation.

    We have some sets of these valve covers on SPECIAL: Special 294, Special 345

    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 standard height on the inside but taller than stock on the outside because of the thick walls and script and fins on top.

    Engine configurations so check clearances.

    These PML valve covers have been installed on many classic Corvettes. Our thanks to those who have shared pictures of their restorations.

    1966 Corvette 509

    Terry installed polish finish PML Big Block valve covers on his 1966 Corvette. He has a 509 big block engine and power brakes. He emailed us before and after pictures of his Corvette and pictures of the engine. Thanks to Terry for the photos.

    Images below show (from left to right): Corvette before restoration, Corvette after restoration, driver's side view of the engine, passenger's side view of the engine

    1966 Corvette, before restoration   1966 Corvette, after restoration   1966 Corvette, PML valve covers, driver's side view   1966 Corvette, PML valve covers, passengers's side view
    Click on image to view larger.

    1967 Corvette

    PML's big block vavle covers in black powder coat were installed on a 1967 Corvette:
    1967 Corvette with PML valve covers   Driver's side, Corvette with PML valve covers   Passenger's side, Corvette with PML valve covers

    1967 Corvette at Grand National Roadster SHow

    1967 Corvette at Grand Nationals PML valve covers on 1967 Corvette, passenger side PML valve covers on 1967 Corvette, driver side PML valve covers on 1967 Corvette, booster close up
    Click on small image to view larger in a new tab or window.

    This 1967 Corvette was at the Grand Nationals Show in January, 2011. These valve covers have the as-cast finish with the top of the fins and script polished. The last image is a close–up of the relief area and shows how the brake booster and valve cover fit together nice and snug.

    1972 Corvette

    Corvette Alley (360-299-9303)shared these images of a 1972 Corvette with a Chevy 454 big block Engine. Here are the specifications: 5 speed, 454 engine, 270 Cam, Edelbrock carburetor and manifold, Power Brakes

    454 passenger side PML valve covers on a 454 big block, passenger side of engine   454 driver side PML valve covers on a 454 big block, 1972 Corvette, driver side of engine
    No larger images available!

    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.

    The PML tall version of these valve covers is approximately 3/8 inch taller.

    Brake Booster Relief

    These valve covers feature a relief on the driver's side cover for the power brake booster. Our tall valve covers, PML Part Number 11042 do not have the relief.

    PML used the recess from the 1969 Big Block 427 Corvette engine for the shape. Other years may have a slightly different recess.

    These images show the brake booster relief cutout on a 1967 Corvette stock cover and the same area on a PML Corvette valve cover.

    Stock Corvette valve cover cutout    PML Corvette valve cover brake booster relief
    Click on image to view larger in a new tab or window.

    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 9096 compared to stock   PML Valve Cover Part Number 9096, 
compared to stock, top view
    Click on image to view larger in a new tab or window.