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Chevy™ Small Block, 1955 to 1959, CORVETTE® Script and Fins
    Chevy™ Small Block, 1955 to 1959, CORVETTE® Script and Fins
    Purchase Chevy™ Small Block, 1955 to 1959, CORVETTE® Script and Fins
    • Chevy™ Small Block, 1955 to 1959, CORVETTE® Script and Fins
      Part Number: vc-asm-11027

    • Staggered Bolt Pattern. Price for set of 2 covers. Includes mounting bolts. SEE PRODUCT INFO.

      $0.00

    • By clicking ADD TO CART, you confirm that you checked fitment and acknowledge PML valve covers Finish and Construction is different from OEM.

       

    Dimensions: Click here for dimensions in a pdf file. A separate window will open and load the file.

    Finishes: Read about finishes and construction of PML parts.

    These sand cast aluminum valve covers feature raised CORVETTE script lettering and 7 fins. They have perimeter mounting with staggered or offset bolt holes for 1955 to early 1959 cylinder heads. The mid height design clears many roller rockers.

    Benefits:

    • Traditional CORVETTE script and fins
    • Heavy duty sand cast aluminum construction
    • Thick flange will not tweak when bolts are tightened
    • Staggered/offset bolt pattern for 1955 to 1959 cylinder heads
    • GM licensed

    These valve covers do not have a provision for PCV, breather or oil fill because the original valve covers did not have a provision for PCV, breather or oil fill. This was done in the intake manifold.

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

    These valve covers fit Chevy small block GM cylinder heads with the staggered or offset bolt pattern. Four bolts on the perimeter of the flange hold the cover on the head. This bolt pattern was used from about 1955 to 1959.

    These valve covers are larger than stock. Check for clearance for larger covers before ordering.

    1957 Corvette 283

    David installed these PML valve covers on his 1957 Corvette with a 283 small block Chevy engine.

    PML valve covers on a 1957 Corvette 283 small block, passenger side 1957 Corvette with a 283 small block   Stock 283 small block valve covers from a 1957 Corvette Stock valve covers   PML valve covers on a 1957 Corvette 283 small block, passenger side PML valve covers installed, passenger side   PML valve covers installed on a 1957 Corvette 283 small block PML valve covers installed, driver side
    Click on image to view larger in a new tab or window.

    Mounting Bolt Holes

    The holes to mount the valve covers on the engine are about 8.8 inches apart (center to center) on the intake or inside edge and 10 inches a part on the exhaust or outside edge.

    Inside of Valve Covers

    Interior is open, same as stock covers.

    inside of valve cover
    Picture shows the inside of the PML cover. Click on image to view larger.

    PML Valve Covers Compared to Stock

    PML Valve Cover Part Number 11027 compared to stock   PML Valve Cover Part Number 11027, 
compared to stock, top view
    Click on image to view larger in a new tab or window.

    PML valve covers are sand cast aluminum, so they have thicker walls, are taller, and have a rougher texture.

    Many original valve covers were die castings or stamped steel. Both have a smooth surface.

    The images below show this PML valve cover compared to a typical die casting, GM part 3726086.

    PML cast finish small block Corvette valve covers, 55 to 59 model years, size compared to die cast part   PML cast finish small block 55 to 59 Corvette valve covers compared to die cast part   PML cast finish small block 55 to 59 Corvette valve covers compared to die cast part, top view
    Click on one of these small images to view larger.

    Read more about finishes and construction of PML parts.