Dimensions: Click here for a pdf file with dimensions. A separate window will open and load the pdf file. Overall, these valve covers are about a 1/2 inch taller than stock.
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.
- 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.
General Motors Trademarks are used under license to PML, Inc.
PML designed these valve covers for Chevy™ 348 or 409 W block engines. The clean design works well in restorations and vehicles where script or fins is not desired.
PML fits each valve cover made on a 348 stock head during manufacturing. This verifies that the covers fit.
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.
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.
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.
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.
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.
Inside of Valve Covers
PML 348, 409 valve covers have an open interior. This allows space for some roller rocker systems. Always check for clearance to make sure PML's covers will work with your engine.
Included with Valve Covers
PML provides mounting hardware with the 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.