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PML Valve Covers with CORVETTE® Script for Chevrolet® 396, 427, 454, & 502 Big Blocks
Part Number 9096
$400 (set of 2)
Black powder coating
$610 (set of 2)
Chevrolet Orange powder coating
$610 (set of 2)
$675 (set of 2)
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:
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.
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.
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 Chevy valve cover, breather grommet, and chrome breather cap
PML Big Block Chevy valve cover, breather grommet and chrome breather cap installed, top view
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.
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.
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
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.
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
1967 Corvette at Grand National Roadster SHow
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.
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
PML valve covers on a 454 big block, passenger side of engine
PML valve covers on a 454 big block, 1972 Corvette, driver side of engine
PML Valve Cover Features
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.
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