Ford 390 - 428 V8 FE Big Block Engines Exhaust Manifold Gasket Set # ED7229 Exhaust Gaskets, Composite with Steel Core, 2.040 in. x 1.400 in. Port, Ford, Mercury, FE Big Block, Pair Port Style: Stock Gasket Material: Composite with steel core Port Height (in.): 2.040 in. Port Width (in.): 1.400 in. Quantity: Sold as a pair. Edelbrock Exhaust Gaskets When installing new headers, or putting them back on after working on your vehicle, it's important to use a new set of gaskets. Edelbrock exhaust gaskets are made of EnCore HTX-900--a high-density, non-asbestos, fiber/metal core composite material consisting of two graphite coated, heat-resistant, fiber-blended sheets that are mechanically and chemically fused to an expanded steel core. The finished product provides high heat resistance, excellent load retention, and unmatched sealing performance on exhaust manifolds and headers. A 50 percent recovery rate allows for gasket expansion in the event your header loses the proper header bolt torque. Edelbrock exhaust gaskets are the perfect choice.