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Dimensions:
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Valve covers are approximately 4.1 inches tall.
Number of Bolts: 6 mounting bolts per cover, on the perimeter
Finishes: Read about finishes and construction of PML parts.
PML designed these valve covers for the classic hot rods of the 1950s and 1960s with the 348 or 409 Chevy™ W block engine. The clean design works well in restorations and vehicles where script or fins is not desired.
Benefits:
- Plain top for customization or clean appearance
- Heavy duty sand-cast aluminum construction
- Thick walls for strength
- Gasket flange will not bend or flex when bolts are tightened for a secure seal
- Mounting hardware included
Some customers engrave or put a their own custom design on the top. Because PML valve covers have thick walls, the top surface is suitable for this. PML does not offer customization.
PML designed these valve covers for Chevy™ 348 or 409 W block engines. The clean design works well in restorations and vehicles where script or fins is not desired.
PML fits each valve cover made on a 348 stock head during manufacturing. This verifies that the covers fit.
Loaner Program
We want to make sure you get valve covers that will work on your engine and you love looking at. With that in mind we have a program for borrowing a PML valve cover to test fit on an engine. Learn more about the PML Loaner Program.
No pictures of installations available.
Top of Covers
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The flat area on top of the covers is approximately 18 by 1 1/2 inches.
Because these are sand castings, the as-cast finish parts will not be smooth as they will have a texture of sand. Read about finishes and construction of PML parts.
Inside of Covers
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The valve covers have an open interior. Two circular areas on on the inside are raised 0.125 (1/8) inches making the wall thickness 0.355 inches in those circular areas. The circles are 1.25 (1 1/4) inches in diameter.
Gaskets
Gaskets are not included with these valve covers. PML recommends cork composite gaskets for these valve covers. Some trimming may be needed to make a gasket fit correctly.
PML offers cork composite gaskets for these valve covers. The PML gaskets are 0.180 inch thick.
Gaskets for Chevy 348, 409 valve covers
Gaskets for Chevy 348, 409 valve covers on PML valve covers, view shows gasket thickness
Gaskets for Chevy 348, 409 valve covers on PML valve covers
PML Valve Covers Compared to Stock
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