Chevy™ Small Block, Perimeter Mount, CORVETTE® Script and Fins Valve Covers
Part Number 11026
$350 with PCV and Breather Holes
|Black Powder Coat
$500 with PCV and Breather Holes
Chevrolet Orange Powder Coat
$500 with PCV and Breather Holes
$575 with PCV and 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. PML designed these valve covers with the classic CORVETTE script for C1, C2, and C3 Corvette, including the Stingray.
The CORVETTE script and fins are cast into the cover and raised. On powder coated parts, the powder coat is shaved off the top of the script and fins. These valve covers are heavy duty with thick walls and gasket flange. The script and fins are part of the casting and raised.
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 systems.
Verify engine configuration, dimensions, and clearance before ordering as PML has a restocking fee.
We have one set of these on SPECIAL: Special #291
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
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 and have a rougher texture. The polish finish smooths the sand-like texture but the result does not look like a die cast or stamped steel cover.
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.
Many makes and models have installed these PML valve covers, not just Corvettes. Our thanks to those who have sent us pictures of their restorations.
1930 Chevy Delivery Truck
Corvette Alley in Anacortes, Washington (phone 360-299-9303) restored this 1930 Chevrolet Commercial Delivery truck with a 400 HP 355 Chevy small block engine, 2 Edelbrock 500 carburetors, and 270 Comp Cams roller rockers. The truck is about 4 feet tall. Engine dressed up with PML valve covers, polish finish.
1933 Ford Coupe
PML Corvette® valve covers installed on a 1933 Ford 3-Window Coupe. We spotted this at the Grand National Roadster Show in January of 2011. Built by Roy Brizio Street Rods, San Francisco, CA.
This 1952 Chevy has 509HP and 436 Torque topped off by these PML valve covers in the natural cast finish. See this YouTube link for details on the engine.
1962 Corvette 327
Tony installed these PML valve covers in the polish finish on his 1962 Corvette with a 327 small block Chevy. He "could not be happier with the way they look and the ease of installation."
1962 Corvette 350
Craig purchased these for his 1962 Corvette and they fit perfectly and look great. He was worried that the taller profile might not fit by coolant reservoir, but it was a perfect fit. He needed PCV and breather for proper engine performance.
350 engine, passenger side, PML valve covers installed, 1962 Corvette
350 engine, driver side, PML valve covers installed, 1962 Corvette
PML valve covers installed on 1962 Corvette Small Block 350
1962 Corvette 383
Tim's Corvette has a 383. PML valve covers are in the polish finish.
1962 Corvette Convertible
Randal polished out the top of the script and fins. He plans to re–route the power brake vacuum line so it does not block his new PML valve cover.
1963 Corvette Fuellie
Matt installed these PML valve covers on his 1963 Corvette Fuellie. Matt knew that the PML valve covers would not fit without modification and was willing to try his hand at modifying them. He reported that the plenum side took a lot of modification. Although he did not want to cut into the top of the cover, he could not get the covers to fit otherwise. Our thanks to Matt for sharing his pictures.
PML does not promote or recommend or advise regarding modifications. This information provided for reference. Once modified no returns are possible.
Matt ordered the valve covers in the natural cast finish, machined with PCV and breather holes.
Terry Lake's 1964 Corvette with these covers installed (polished finish).
1966 Corvette Convertible
Nick ordered these PML valve covers without any holes and with a PML cork composite gasket to finish off his beautiful engine.
1967 Chevrolet Nova Sport Coupe With Brodix Heads
Gary installed these PML valve covers on his custom build with Brodix cylinder heads. On first attempt, the PML valve covers hit head and would not fit. By machining away about half of the lip on the bottom edge of the valve covers, Gary was able to get the covers to fit perfectly.
The first images shows the modification to the PML valve covers. The lip holds the gasket in place and is about 0.150 inches wide so there is plenty of material left even after machining. In the picture, the machined area is shiny.
Gary wanted the look of a L79 SBC pulled out of a Corvette. He was not trying to create a L79 Nova SS. He created the old time look of going to the Chevrolet dealer and buying the engine over the counter or pulling one from a wrecked Corvette from the wrecking yard. Engine is a SBC with a Comp Cams flat tappet cam, Brodix aluminum heads with a 700R4 overdrive transmission and a heavily modified Heidts front clip.
1967 Corvette Coupe
Dave installed these PML valve covers on his 1967 Corvette. He removed the original 327 engine and built a 427 small block using a Dart SHP block, Brodix IV heads with steel Comp Cams Extreme Duty roller rockers.
Dave ordered the valve covers in the natural cast finish, machined with PCV and breather holes and baffle clearance. The machining worked well and the valve covers fit the heads with the roller rockers.
1968 Iso Grifo
Ivan installed our natural cast finish CORVETTE valve covers on his 1968 Iso Grifo. The valve covers highlight the 383 Stroker Corvette engine. There was some interference between the springs and the internal baffle but with a Dremel tool and some patience everything worked fine.
Peter installed these PML valve covers on his 1974 Corvette Stingray 350 V8 engine.
The PCV valve is installed on the driver side. The breather is on the passenger side. With the PML breather installed, it is barely visible.
PML Valve Cover Features
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Learn more about finishes and construction of PML parts.
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