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Chevy™ Small Block, Perimeter Mount, Pre-1986, CHEVROLET® Script
Valve Covers

P/N 8357-1

PML Valve Covers, Chevy Small Block, PolishedPML GM Licensing Stamp Polished finish
$395.00 (set of 2)
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Dimensions: Click here for dimensions in a pdf file. A separate window will open and load the file.

Finishes: Read about finishes and construction of PML parts.

These PML valve covers are standard perimeter mount covers for pre-1986 small block Chevy engines. The CHEVROLET script is cast into the cover and is raised. On powder coated parts, the powder coat is shaved off the top of the script.

These covers feature a mid-height design that will clear most roller and/or ratio rockers. There is no correlation between roller rocker ratio and fitment of our valve covers. It is based on the actual physical dimensions of the parts. These valve covers were designed using a stock head and the Jesel Roller rocker system. Please check dimensions in above link to verify clearance for your particular configuration.

Optional PCV, Breather and Oil Fill Holes

PML Valve Covers, hole location

PML makes these valve covers without holes. If needed, the covers can be machined for PCV, breather, or oil fill on the intake manifold side. PML can machine holes for $40 per hole.

Please read this PDF file on oil fill, breather and PCV set-up.

If you want valve covers with holes, please call to order.

PML Small Block Valve Covers on Edelbrock Performer RPM Cylinder Heads

Our thanks to Braun's Automotive in Lomita, CA for working with us. Contact Braun's at (310) 325-4303 or see www.braunsautomotive.com.

PML Small Block Chevy valve covers can work with Edelbrock Performer RPM kits. However, the baffle on the PML valve covers will hit the pins unless the baffle is reduced in size. PML can machine the baffle to reduce the size if needed. For the Performer RPM, the distance between the pins is 1.16 inches. Out of the box our baffle is 1.2 inches. Call or email us if you need information.

Installing PML valve covers with a gasket, top view   Installing PML valve covers with a gasket   Suggested gasket for PML small block Chevy valve covers

The cylinder head is number 6089. The PML valve cover shown is our 25th anniversary edition but the same information applies to all PML small block chevy perimeter mount valve covers.

PML Small Block Valve Covers with T&D Rocker Arms

PML designed small block Chevy valve covers to work with many roller rocker systems, such as Jesel. However, our valve covers are not compatible with T&D Shaft Mounted Rocker Arms.

The T&D Machine Products Competition Rocker Arms are shown in the image at left. The shaft mounts are very tall, almost to the top of the rocker arms. The PML cast-in internal baffles will contact these mounts.

shaft mounted rocker arms
Click on image to view larger.

Installations and Customer Pictures

Mike Olsen put these valve covers in orange powder coat on his El Camino and graciously provided us with some images.

PML Chevrolet Valve Covers on an El Camino   PML Chevrolet Valve Covers on an El Camino   PML Chevrolet Valve Covers on an El Camino

Another customer decided he liked the black powder coat finish better for his project:

PML Chevrolet Valve Covers, black powder coat, install pix 1   PML Chevrolet Valve Covers, black powder coat, install pix 2   PML Chevrolet Valve Covers, black powder coat, install pix 3

PML Valve Cover Features

  • Strong sand-cast aluminum construction
  • Thick side walls and gasket flanges that will not bend when bolts are tightened
  • 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.