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Chevrolet® 396, 427, 454, & 502 Big Block With Raised CHEVROLET Script, Tall
Valve Covers

P/N 9739

PML Big Block Chevy Tall Valve Covers, As-CastPML GM Licensing Stamp PML Big Block Chevy Valve Tall Covers, Black Powder CoatedPML GM Licensing Stamp
PML Big Block Chevy Valve Tall Covers, Orange Powder CoatedPML GM Licensing Stamp
PML Big Block Chevy Valve Tall Covers, PolishedPML GM Licensing Stamp
As-cast finish
$300.00 (set of 2)
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Black powder coating
$420.00 (set of 2)
Go To Cart
Chevrolet Orange powder coating
$420.00 (set of 2)
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Polished finish
$475.00 (set of 2)
Go To Cart

Dimensions: Click here for dimensions. A separate window will open. Please check for clearance issues with firewalls, brake bosters, alternator, air conditioning brackets, and the like.

Finishes: Read about finishes and construction of PML parts.

These PML valve covers feature raised CHEVROLET script and fins. They are taller than stock and fit Chevy™ big block engines. The valve covers have PCV and oil fill/breather holes and baffles cast into the covers.

These covers are 3/8-inches taller than our standard height covers to fit over many roller rockers, such as Jesel. Read under installations below for possible modifications. If you have the stock valve cover, a simple check can be made to see how much clearance you need. Set the cover on the head and measure the distance between the gasket flange and the head. Our cover is approximately 3/8" to ½ taller then the stock cover. Click for dimensions.

The covers use stock grommets and gaskets (not included).

For our stock height big block valve covers, P/N 9737, click here.

Click here for a pdf file of a flyer with pictures of PML standard and tall big block Chevy valve covers. A separate window will open and load the pdf file.

Installations

PML Valve Covers on 1955 Belair

Tim Ruddick of Texas installed PML tall big block Chevy valve covers on his 1955 Belair with a 454 engine. He emailed us to let us know that the covers fit perfectly and he had at least an inch of firewall clearance. He also said "I think they look awesome and went well with the old school theme in my engine compartment. The quality, fit and finish were first rate." Thank you Tim for sharing your pictures and letting us know.
1955 Belair with PML Chevy Valve Covers   1955 Belair, PML valve covers, driver's side   1955 Belair, PML valve covers, passengers's side
Click on images to view larger.

On 283 Grind Thumpr Comp Cams

Mike purchased PML valve covers for his big block engine on his 1930 Ford Coupe street rod. He also upgraded his Cam and roller rockers. His cam is a 283 grind Thumpr from Comp Cams and the roller rockers are a generic kind, gold in color and very squared off. He used a standard gaskets, not extra thick.

To get the PML covers to fit, he rounded off the left side corners on two of the roller rockers. The valve covers fit great after grinding a bit off the roller rockers on #1 intake and #6 intake (one intake rocker on each side of engine). He did not remove any material from the valve covers. He was told later by an engine machinist that this procedure is virtually always necessary when you try to put roller rockers on a big block chevy.

502 Engine with PML Valve Covers, Polished

Polished covers installed on a 502 engine. Click on the small image to view a larger picture in a separate window. Thank you to our customer Jeff for providing the picture.

Chevy Valve Covers On Customer Engine

1955 Chevrolet with 540 Engine

John installed PML's tall big block valve covers on his 1955 Chevrolet with a 540 cu in engine. The covers have the polish finish. John also installed a PML transmission pan on his Chevy.

PML Chevy Valve Covers On 540 Engine   1955 Chevy with PML valve covers under the hood  

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.