Chevy™ Small Block
GM LT1/LT4, Center Bolt
Finned
Valve Covers

P/N 10534

These valve covers feature a classic appearance with raised fins and strong cast aluminum construction. PML made these fin-only style valve covers for center bolt small block engines, GM Generation II LT1 and LT4.

PML designed these valve covers for a classic, clean appearance. Stock center bolt valve covers have four bolts holding the cover on to the engine and holes on the top. PML's two-bolt design removes the two center bolts and the holes from the top surface. 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. If PCV, oil fill, or breather holes are needed, they can be machined on the intake manifold side in the front or back.

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. This fin-only design allows these valve covers to be used in non-GM applications such as Ford hot rods.

Also available with CHEVROLET® script or CORVETTE® script.

These covers are designed to use stock gaskets.

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. A PDF file will open in a separate window.

PCV, Breather and Oil Fill

PCV, oil fill, or breather holes may be machined on the intake manifold side, in the front or in the rear.

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.

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

Installations and Customer Pictures

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

Images below show a 1929 Ford Roadster designed and built by Pacific Coast Customs in Northern California.

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.)