

Cork-Rubber Valve Cover Gasket, 0.156 in. for 1962-1984 Chevy and GM L6 194-292 Engines
Fel-Pro 1640 is a valve cover gasket for Chevy and GM inline-6 engines using the 194, 230, 250, or 292 engine family from the classic 1960s through early 1980s era. Its blue stripe cork and rubber construction helps seal uneven valve cover surfaces, giving engine builders and repair techs a dependable choice for leak-prone or hard-used applications. The .156 in. extra-thick profile adds compressibility where a thin gasket may struggle.
Fel-Pro 1640 Technical Specifications:
- Blue stripe cork and rubber material uses cork particles distributed through a rubber binder for a compressible seal with no continuous leak path through the gasket body.
- .156 in. thickness provides an extra-thick sealing surface for demanding repair and performance applications.
- Designed for Chevy and GM inline-6 engines in the 194, 230, 250, and 292 families, including 3.2L, 3.8L, 4.1L, and 4.8L displacements.
- Performance-oriented construction is suited for racing and engine rebuild work where valve cover sealing surfaces may be less than perfect.
- Not intended for use on emission-controlled vehicles.
Fits applicable Chevy and GM L6 engines from 1962-1984 in the 194, 230, 250, and 292 engine families. Confirm engine family and emissions requirements before installation.
Cork-Rubber is the most frequently used material. FEL-PRO Blue Stripe premium-quality cork-rubber gaskets use evenly-sized cork particles evenly distributed throughout a rubber binder. The result is a compressible gasket without leak paths.
Fel-CoPrene synthetic rubber can offer longer life than cork-rubber. However, because it is more flexible than cork-rubber, it can be more difficult to install. Generally, a quick-drying contact adhesive should be used to bond the gasket to the valve cover before installation.
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Rubber-Coated Fiber is used for some high heat applications, such as Chrysler big block V8 engines, where the valve cover is in close proximity to the exhaust manifold. These Fel-Pro gaskets are made of a stiff, high temperature fiber material coated with latex rubber.
Cork-Lam is used in applications where high vacuum or blowout conditions can be a problem. Cork-Lam uses a metal core with cork-rubber material chemically bonded to it on both sides. This construction allows for a thicker than normal gasket with exceptionally good torque retention and also allows for more clearance between the valve cover and valvetrain.
Composite Material is a superb choice for Pro-Stock, Funny Car/Dragster, and NASCAR race engines. Laminated over a steel core, the composite material offers maximum compression and torque retention in super-high vacuum conditions. The Fel-Pro gasket is also coated with silicone for even greater sealing and easier removal.
Molded Silicone Rubber gaskets provide for ease of installation and are great for on again/off again situations like valve lash setting. These Fel-Pro gaskets feature high-tech silicone material for long life and sealing, a solid steel core for strength and durability, and stainless steel compression limiters to prevent overtightening. This is an excellent choice for high vacuum race engines.
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