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

P/N 11040

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.

Dimensions

These covers are slightly taller than stock to allow roller rockers. 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.

About Gaskets

These covers are designed to use stock gaskets.

Baffles

Valve covers feature internal cast-in baffles. Click here for picture of inside. A image will open in a separate window.

PCV, Oil Fill and Breathers

PCV, oil fill, or breather holes may be machined on the intake manifold side, in the front or in the rear. A hole for these purposes is optional.

Covers do not come with holes machined for PCV, oil fill or breathers. Two locations on the intake manifold side can optionally be machined. Baffles are cast into the interior of the cover in two locations opposite where the holes would go. Please call to order if you would like PML to machined these holes. There is a machining charge. For more information, see this pdf file on machining, grommets and breathers.

Installations and Customer Pictures

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

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.

Read more about the truck on the Street Trucks website — search for "Operation Muscle Truck".

For a great step-by-step installation article of these valve covers, see Street Trucks July 2009 magazine article "Retro Rocker Covers" (click for a pdf of the article).

This article uses the valve covers with the black powder coat finish.

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.

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.)

General Motors Trademarks are used under license to PML, Inc.