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Chevy™ Small Block, Perimeter Mount, CHEVROLET® Script and Fins Valve Covers

Part Number 10430

PML Valve Covers, Chevy Small Block, Finned, As-Cast FinishPML GM Licensing Stamp
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PML Valve Covers, Chevy Small Block, Finned, Black Powder CoatedPML GM Licensing Stamp
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PML Valve Covers, Chevy Small Block, Finned, Orange Powder CoatedPML GM Licensing Stamp
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PML Valve Covers, Chevy Small Block, Finned, PolishedPML GM Licensing Stamp
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As-Cast Finish
$375 with PCV, Breather Holes
$275 without
Go To Cart
Black Powder Coat Finish
$550 with PCV, Breather Holes
$450 without
Go To Cart
Chevrolet Orange Powder Coat Finish
$550 with PCV, Breather Holes
$450 without
Go To Cart
Polished Finish
$610 with PCV, Breather Holes
$510 without
Go To Cart

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 1959 to 1986 small block Chevy engines. The classic CHEVROLET script and fins are cast into the cover and are raised. On powder coated parts, the powder coat is shaved off the top of the script and the fins.

These PML valve covers are standard flange mount covers for 1959 to 1986 small block Chevy engines (265, 283, 327, 350, 400). The valve covers mount on to the cylinder heads with four bolts on the perimeter, directly across from each other. We fit each cover on a stock GM cylinder head with stock rocker arms.

These covers fit on many engine configurations and feature a mid-height design that will clear many roller rocker system.

Verify engine configuration, dimensions, and clearance before ordering as PML has a restocking fee.

We have some of these valve covers on SPECIAL.

Fitting on Your Engine Checklist

Configurations vary! Do our Checklist before you order.

We have a Loaner Program if you need a cover to test fit.

Optional PCV, Breather, and Oil Fill Holes

PML Corvette Valve Cover, baffle shown

Our approach to PCV and breather holes is unique so we prepared a document detailing PML Specifications on Oil Fill, Breather and PCV (click to view).

PML small block valve covers can be ordered with or without PCV, oil fill and breather holes. Choose the option in the shopping cart. The option for PCV and breather holes includes one hole in each cover, a PCV grommet, a push-in breather, and an oil fill tube.

Please call if your engine configuration requires one hole or to discuss your requirements.

PML machining tools

PML machines the valve covers to order in our shop. We use four or five different tools, shown in picture, on a CNC machine to create neat, leak-free holes. Spot facing provides a smooth sealing surface for grommets.

We have two videos showing the machining process: step-by-step of PML machining a PCV hole and step-by-step of PML machining a hole for our push-in breather.

Roller Rockers

These PML valve covers work with many engine configurations and roller rocker systems. If you have something other than stock, reference:

Compared to Die Casting

These images show this PML valve cover compared to a typical die casting, GM part 3726086. Many original valve covers were die castings or stamped steel. Both have a smooth surface.

PML cast finish small block Corvette valve covers compared to die cast part   PML cast finish small block Chevrolet valve covers compared to die cast part, end view
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PML valve covers are sand cast aluminum, so they have thicker walls, are taller, and have a rougher texture. Read more about finishes and construction of PML parts.

PML Valve Covers Compared to Stock

PML Valve Covers Part Number 10430 height compared to stock  PML Valve Covers Part Number 10430, 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

1955 Chevy Bel Air 383 Stroker

Bob chose the polish finish for his 383 Stroker engine in his 1955 Chevy Bel Air Wagon.

His pictures are of: Bel Air Wagon, Stock Valve Covers, Bel Air Waiting for the Engine, Engine with PML Valve Covers, Engine Installed, Driver Side View of Engine

1955 Bel Air Wagon 1955 Bel Air Wagon   Stock 383 valve covers Stock valve covers   Empty engine compartment 1955 Bel Air Empty Engine Compartment
383 Small Block Chevy Engine with PML valve covers Engine ready to go   383 engine in 1955 Bel Air 383 small block Chevy installed   Driver side of Bel Air 383 engine with PML valve covers 383 Small Block with PML Chevrolet valve covers
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1955 Chevy Bel Air Tri–Power

Tri-Power Carburetion, by Larry Fulton @ www.HotRodCarbs.com. Our thanks to Larry for sending us pictures and for selecting quality PML valve covers for this project. Owner of this beautiful '55 Chevy is Richie Polleri.

Valve covers were polished and then custom painted.

Engine of a Bel Air with PML Chevy Valve Covers installed    1955 Bel Air
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PML Chevy Valve Covers on 1980s Chevy engine

1955 Chevy with 1980 Engine

Ken Bethel is putting this 1980´s engine in his 1955 Chevy.

He said these PML small block Chevy valve covers "are exactly what I had envisioned when I began the search for just the right valve covers for my 55 Chevy project.".

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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.