Chevy™ Small Block
GM LT1/LT4, Center Bolt
CHEVROLET® Script and Fins
Valve Covers

P/N 11040

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

Finishes: Read about finishes and construction of PML parts.

Award Winning - these valve covers won the SEMA 2007 Global Media Award

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

PML designed these covers so that the top surface where the fins and lettering are is completely clean.

The design removed two bolts and the PCV/breather/oil fill holes from the top surface and added the script and fins. The sand cast aluminum construction is so much stiffer than stock that you do not need four bolts to apply pressure evenly to the gasket.

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.

PML center bolt small block valve covers are also available with fins-only design or CORVETTE script.

About Fitment

These covers are slightly taller than stock to allow for many types roller rockers. Use the dimensions to see if these will work with your particular configuration. Please check for interference from a taller valve cover as some engines have a bracket or other parts that sit close to the stock covers. Click here for dimensions.

Baffles

Valve covers feature internal cast-in baffles. Image shows inside of a valve cover.

Optional PCV, Breather and Oil Fill Holes

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. There are two locations on the side of each cover that can be machined.

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

To place an order for valve covers with holes, please call.

Gaskets

PML recommends using Fel-Pro gaskets with these valve covers. The part number is VS 50088 R.

To install the covers using these gaskets, hold the gasket in place with your fingers and put your thumbs over the screws on the top. Then carefully fit the valve covers on the head making sure to get the groove on the covers lined up with the groove on the head. Put the exhaust side in first. Not getting the grooves lined up is a cause of leaks.

Installations and Customer Pictures

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

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.

C1500 Truck With PML Valve Covers

PML Chevrolet valve covers on a 1995 C1500 Pickup make 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 Chevy Truck With PML Valve Covers

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.

1934 Rodder With PML Valve Covers

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.

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.