Chevy™ Small Block, Perimeter Mount, CHEVROLET® Script and Fins Valve Covers
Part Number 10430
$350 with PCV, Breather Holes
|Black Powder Coat Finish
$500 with PCV, Breather Holes
|Chevrolet Orange Powder Coat Finish
$500 with PCV, Breather Holes
$575 with PCV, Breather Holes
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 ChecklistConfigurations 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
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 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.
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 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
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.
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.".
Click on image to view larger.
1955 Chevy Bel Air
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.
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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