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Chevy™ Small Block, LS1 LS6, Finned Top
    Chevy™ Small Block, LS1 LS6, Finned Top
    Purchase Chevy™ Small Block, LS1 LS6, Finned Top
    • Chevy™ Small Block, LS1 LS6, Finned Top
      Part Number: vc-asm-10413

    • Price for set of 2 covers. Includes set of custom gaskets and mounting bolts.
      Price varies with finish. SEE PRODUCT INFO.



    Dimensions: Click here for dimensions. A PDF file will open in a separate window.

    Finishes: Read about finishes and construction of PML parts.

    These PML valve covers for LS engines feature a tall height and a clean design with raised fins. They are heavy duty and larger than stock.

    Two recessed bolts per cover (stock uses four) hold the cover on the engine. The sand cast aluminum construction provides stiffness so four bolts are not needed to apply pressure evenly to the gasket.

    This PML design located the PCV/breather/oil fill hole in the center on the intake side. The stock covers have the oil fill on the top. With PML covers, a hole on the intake manifold side is used for oil fill, in keeping with the clean, classic design.

    We have one set of our LS valve covers on SPECIAL.

    Relocation of the coil packs if the responsibility of the installer. Always verify engine configuration, dimensions, and clearance before ordering.

    Stock LS1/LS6 valve cover  Click on image to view larger.

    PML designed these valve covers to replace the stock covers (shown in image). PML valve covers fit the stock GM center bolt cylinder heads used in 3rd generation LS Chevrolet® small block engines, 1997 and newer. Versions of these heads are found on Corvette, Silverado/Sierra, Tahoe/Yukon, Camaro/Firebird, and GTO's.

    Some early Gen III engines in 1997 and 1998 have 9 bolts on the perimeter of each cover. These PML valve covers will not work with the 9 bolt perimeter mount cylinder heads.

    GTO by Willoughby Hot Rods

    These images are courtesy of Tim at Willoughby Hot Rods. They are showcasing Devin Houston's 1970 GTO SC/Tiger. PML valve covers installed. This animal is equipped with a Quick Fuel blow through carburetor and 600 horsepower exhausting through a Pypes 3" stainless system.

    GTO with PML LS1/LS6 valve covers installed   Stock LS1/LS6 valve covers installed on a GTO   GTO with PML valve covers, driver's side   GTO with PML LS1/LS6 valve covers, passenger's side

    Street Trucks Magazine, March 2012 Issue

    Street Trucks magazine article with PML LS valve covers  Click on image to view PDF of article. A new window or tab will open.

    Street Trucks magazine shows the installation of PML LS valve covers on the build of Brass Tacks, a street rodder transformed from a 1976 GMC Jimmy.

    Click on image for a PDF of the article. A separate window will open and display the pdf file.

    Our thanks to Jason Mulligan and Street Trucks.

    Grand National Roadster Show 2017

    We saw this beautiful truck at the Grand National Roadster Show at the Fairplex in Pomona, CA, in January 2017. The engine does a nice job showing off PML's LS valve covers in the polish finish.

      LS engine, driver's side, GNRS 2017   LS engine, passenger's side, GNRS 2017
    Click on image to view larger.

    Minge's Universal Service at the Oslo Motor Show, Norway

    Minge's Universal Service ( offers PML valve covers on their high performance engines. These images are from Minge's booth at the Oslo Motor Show, November 2011.

    Minge's Universal Service with PML LS1/LS6 valve cover   Minge's Universal Service engine with PML LS1/LS6 valve cover  Click on image to view larger.

    PCV, Breather, Oil Fill and Optional Machining

    These valve covers have holes cast into the intake manifold side of the cover for PCV, oil fill and breathers. The holes are 1 inch in diameter. Some applications require larger holes, for example 1 1/4 inches. The cast-in holes can be machined to the larger size if needed.

    PML has a machine shop on-site and can machine holes for per hole. Please call to order machining and discuss the specifications.

    Images below show an example set-up. Holes on the valve covers were both machined to larger 1 1/4 inch. One cover has a push-in breather (center image) installed. The other cover has a PCV valve with grommet. Push-in breather and grommet both available from PML.

    PML SBC LS1/LS6 Gen3 Valve Covers, On Engine    PML SBC LS1/LS6 Gen3 Valve Covers Breather    PML SBC LS1/LS6 Gen3 Valve Covers PCV

    This shows the inside of the cover machined for the push-in breather with the breather installed:
    Click to view larger image in a separate window or tab.


    PML designed our valve covers and gaskets for a secure seal. PML supplies one set of our gaskets with each order.

    PML gasket our LS valve covers PML LS valve cover gaskets, cork composite material   PML gaskets on PML LS valve covers PML LS valve covers and gaskets   PML gasket, back side, peel and stick PML LS gasket have peel and stick adhesive on back
    Click on an image to view larger in a separate tab or window.

    The gasket is a cork composite material and are "peel and stick" for ease of installation.

    PML valve covers will not work with stock gaskets and PML gaskets will not work with stock valve covers.

    Call us at 310-671-4345 or email to order addtional gaskets.

    Coil Packs

    Coil packs will need to be relocated in order to use these valve covers.


    LS valve cover baffles  Click on image to view larger.

    Valve covers feature internal cast-in baffles. Inside of cover pictured at right. The baffle is in the center of the cover where the PCV/oil fill/breather hole is located. The hole is 1 inch but can be machined to 1 1/4 if needed.