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PML Valve Covers For Chevy™ Small Block LT1/LT4 Engines, Center Bolt Mount
CHEVROLET® Script and Fins

Part Number 11040

Valve Covers include new mounting bolts and a cork-composite gasket of our own design.

PML SBC Center Bolt Chevrolet Valve Covers, As-Cast Finish
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PML GM Licensing Stamp

PML SBC Center Bolt Chevrolet Valve Covers, Black
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PML GM Licensing Stamp

PML SBC Center Bolt Chevrolet Valve Covers, Orange
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PML GM Licensing Stamp

PML SBC Center Bolt Chevrolet Valve Covers, Polished
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PML GM Licensing Stamp

As-Cast Finish:
Go To Cart
$415.00 with PCV Hole and Breather Hole
$365.00 with PCV Hole or Breather Hole
$315 without Holes
Black Powder Coat:
Go To Cart
$585.00 with PCV Hole and Breather Hole
$535.00 with PCV Hole or Breather Hole
$485 without Holes
Orange Powder Coat:
Go To Cart
$585.00 with PCV Hole and Breather Hole
$535.00 with PCV Hole or Breather Hole
$485 without Holes
Polished Finish:
Go To Cart
$650.00 with PCV Hole and Breather Hole
$600.00 with PCV Hole or Breather Hole
$550 without Holes

Dimensions: Click here for dimensions. A separate window will open and load an image.

Finishes: Read about finishes and construction of PML parts.

The valve covers feature vintage CHEVROLET script lettering and fins for a classic appearance. PML made these for GM Generation II LT1 and LT4 small block engines, center bolt mounting.

  • Script and fins are raised
  • Top shows off the the fins and lettering
  • Heavy duty construction for secure two bolt clamping on the cylinder head
  • Optional PCV/Breather/Oil Fill holes on intake manifold side for a functional yet clean design
  • Gasket and new mounting bolts included
  • Slightly taller than stock
  • CHEVROLET script used under license to PML, Inc., by General Motors

Also available with CORVETTE script.

Award winning two–bolt design:

Stock valve covers have four bolts holding the cover on to the engine. PML two–bolt design removes the two center bolts for an attractive presentation.

Because PML valve covers have thick wall, sand cast aluminum construction, they are much stiffer than stock and need only two bolts to apply pressure evenly to the gasket. PML valve covers will not tweak, bend, twist or deform. No leaks and a great look to dress up your engine.

These valve covers won the SEMA 2007 Global Media Award.

PCV, Breather, Oil Fill Holes:

If PCV, oil fill, or breather holes are needed, they can be machined on the intake manifold. See Specifications for Optional PCV, Breather and Oil Fill Holes.

Applications:

Many crate engines, 1987-1998 Silverado, Sierra, Suburban, Tahoe, Corvette, Impala SS, Camaro Z28, and mid-90s Pontiac Camaro and Firebird have small block center bolt heads.

Fitment

Click here for dimensions. Use these dimensions to check if PML valve covers will fit on your engine.

These covers are slightly larger than stock.

The extra height allows for many types roller rockers but not all.

Check for interference from a taller valve cover as some engines have a bracket or other parts that sit close to the stock covers. Some customers have reported modifying their alternator bracket so these covers will fit

PML fits each valve cover on an original cast iron cylinder head.

Small block cyliner head, center bolt  Click on image to view larger

These valve covers may fit differently on aluminum or aftermarket heads.

PML Small Block Valve Covers with Rocker Arms:

PML designed small block Chevy valve covers to work with many roller rocker systems. However, our valve covers are not compatible with shaft mounted rocker arms such as T&D.

shaft mounted rocker arms  Click on image to view larger.

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

Any rocker system must have space between the rocker arms for the baffle webbing inside the PML valve covers to fit between the arms.

Inside of PML Valve Covers and Baffles

PML Center Bolt Valve Covers, baffles  Click on image to view larger.

Image shows inside of a valve cover. The areas next to the bolt holes are baffles for optional PCV and breathers. These are cast–in.

Optional PCV, Breather and Oil Fill Holes

PML Center Bolt Valve Covers, PCV and breathers   PML Center Bolt Valve Covers, PCV and breathers

Read this PDF file on oil fill, breather and PCV holes (click here).

PML small block valve covers are made without holes for PCV, oil fill or breather. PML can machine holes to your specifications.

For engines that require PCV and breather holes on the valve cover, PML designed the casting to be thicker on the intake manifold side and put baffles on the inside in two locations for holes. The top of the cover cannot be machined.

A separate oil fill hole is not needed since the PCV or push-in breather can be removed and oil added there.

PML machining tools  Click on image to view larger.

PML uses four or five different tools on a CNC machine to create a clean, leak-free hole for PCV, breather or oil fill. Spot facing provides a smooth sealing surface for grommets.

To learn more, we have two videos.

The information is generally the same although a different PML valve cover is shown in these videos.

When ordering holes, you will need to specify the hole location. Holes can be machined on the passenger's side cover or on the driver's side cover, towards the front of the car or towards the rear. You can choose the location and type of hole needed in the shopping cart or can call to order. International customers, please email us for ordering.

Gaskets

PML gaskets for Center Bolt small block Chevy valve covers    Close up of PML gaskets for Center Bolt small block Chevy valve covers    PML valve cover with PML gaskets for Center Bolt small block Chevy valve covers
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PML includes a set of our cork composite gaskets with our valve covers.

Gaskets are 0.180 to 0.200 inches thick.

We designed these for easy installation and to provide a leak-proof seal.

PML Valve Covers Compared to Stock

PML Valve Covers Part Number 11040 height compared to stock   PML Valve Covers Part Number 11040, 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.

Installations and Customer Pictures

We always like to hear back from customers with pictures from their installations and restorations.

1995 C1500 Truck

PML Chevolet valve covers in Street Trucks magazine  Click on image to view larger.

These PML Chevrolet valve covers on a 1995 C1500 Pickup made the cover of September 2010 Street Trucks Magazine. Read the whole article (pdf file). This article shows the natural as-cast finish valve covers.

The truck has a GM Performance Parts HT383 crate motor and a Weiand intake manifold. Read more about the truck on the Street Trucks website — search for "Operation Muscle Truck".

1955 Belair

Danny was very pleased to receive these PML valve covers as a Christmas gift from his wife. He installed them on his 1955 Belair with a ZZ4 350 engine.

1955 Belair   1955 Belair 350 engine, PML valve covers installed, front view   1955 Belair 350 engine, PML valve covers installed
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1955 Chevy Truck

PML small block center bolt valve covers on a 1955 Chevy Shortbed, step side, small window, with a GM ZZ4 motor.

Restoration done by and pictures courtesy of Schneider Racing Cams.

PML Center Bolt Valve Covers on a Chevy Shortbed, Z28 engine   1955 Chevy Shortbed with PML valve covers
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1934 Rodder

1934 Chevy Street Rodder with PML valve covers   Click on image to view larger in a new tab or window.

Jay restored this 1934 Chevy Street Rodder over the course of 10 months with some help from his friends. He installed PML's small block valve covers with Chevrolet script. He plans to paint the valve covers to match his wheels. This image shows the valve covers with the natural as-cast finish.

Our thanks to Jay for sharing his pictures.

9C1 Police Interceptor ZZ4 withe 385 Fast Burn Heads

Micah Sheveloff at www.micahsheveloff.com installed these PML small block Chevy valve covers on his 9C1 Police Interceptor. The engine is a GM Crate ZZ4 Engine with 385 Fast Burn Heads. Micah selected the black powder coat finish with PCV and breather holes, both towards the rear.

PML valve covers on ZZ4 crate engine with 385 fast burn heads    9C1 Police Interceptor with PML valve covers    9C1 Police Interceptor, restored by Micah Sheveloff
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5.7 Vortec Engine

Joseph Mendez, Tech Editor for Lowrider Scene Magazine, beautifully engraved a small block Chevy 5.7L Vortec engine from a 1995 Silverado. The engine is topped with PML valve covers.

PML valve covers, engraved engine    close up of engraving work by Lowrider Scene Editor Mendez    PML valve covers, engraved engine, front view
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From left to right: valve covers on engine, close up of engraving, another view of engine

Street Trucks Magazine

PML Center Bolt Valve Covers installation  Click on image to view larger.

For a great step-by-step installation article of these valve covers, see Street Trucks July 2009 magazine article "Retro Rocker Covers" (click at right for a pdf of the article). This article uses the valve covers with the black powder coat finish.

Corvette Forum

Read about our center bolt valve covers on corvetteforum.com.

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.