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

P/N 11041

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

Finishes: Read about finishes and construction of PML parts.

These valve covers feature vintage CORVETTE script lettering and fins and strong cast aluminum construction. 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 also makes covers for these engines with fins-only design or CHEVROLET script.

We have one set of these valve covers on SPECIAL.

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

1932 Ford

This 1932 Ford at the Grand Nationals in January of 2011 shows these PML valve covers in polish finish with black paint between the fins and script. The engine is a ZZ3 350 and the transmission is a 700R4. This roadster belongs to Bryan in Riverside, CA and kindly allowed us to take some pictures.

1964 Corvette

Jim Smith installed PML valve covers on his 1964 Corvette with a GM 350 CID ZZ4 engine. Per his request, PML machined a hole on the intake manifold side of the cover on the driver's side for PCV. And it worked out perfectly. Our thanks to Jim for sharing his pictures.

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.