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PML Valve Covers with CORVETTE® Script for Chevrolet® 396, 427, 454, & 502 Big Blocks

Part Number 9096

PML Chevy Big Block Valve Covers for Corvettes, As-CastPML GM Licensing Stamp PML Chevy Big Block Valve Covers for Corvettes, Black Powder CoatedPML GM Licensing Stamp PML Chevy Big Block Valve Covers for Corvettes, Orange Powder CoatedPML GM Licensing Stamp PML Chevy Big Block Valve Covers for Corvettes, PolishedPML GM Licensing Stamp
As-cast finish
$350.00 (set of 2)
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Black powder coating
$480.00 (set of 2)
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Chevrolet Orange powder coating
$480.00 (set of 2)
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Polished finish
$550.00 (set of 2)
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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 of these PML valve covers:

  • 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

PML designed these valve covers using original GM cast iron heads. 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 of these valve covers that are on special. Click here for information on these specials.

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
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Checking Clearance

Click for dimensions.

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. PML tall covers are approximately 3/8 inch taller than our standard height covers.

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.

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
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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 Covers Part Number 9096 height compared to stock  PML Valve Covers Part Number 9096, compared to stock
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These images show a PML valve cover compared to the stock cover. The outside dimensions are shown. The distance to the gasket surface maybe different. See the link below the "Buy Now" button for more information on dimensions.

Installations

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 With PML Valve Covers

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
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1967 Corvette With PML Valve Covers

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 With PML Valve Covers

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
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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.

PML Valve Cover Features

  • Strong sand-cast aluminum construction
  • Thick side walls and gasket flanges that will not bend when bolts are tightened
  • Cast-in internal baffles
  • Mounting hardware included

For a larger picture, please click one of the above images. A separate window will open showing a bigger picture. (The larger pictures take a minute to display.)

Learn more about finishes and construction of PML parts.

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