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1965-1990 Big block header gaskets

Item EK-40-878144-1
38 Reviews of Mr. Gasket
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$47.00

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      Product Information

      Features, Description, Q&A

      Features

      • Manufactured From High-Temperature Steel Core With Graphite-Faced Exhaust Material
      • Expanded Steel Core Provides Stability And Maximum Torque Retention To Minimize Gasket Failure
      • Graphite-Impregnated Facing Offers Excellent Heat Resistance And Thermal Conductivity To Transfer Heat Away From The Cylinder Head
      • Conforms To And Seals Minor Surface Irregularities For A Reliable Seal
      • Can Be Trimmed If Necessary For Modified Port Applications
      • Suitable For OE Replacement, High Performance Street, Drag Race, And Oval Track Use
      • Thickness: 0.062 Inch
      • Weight: 0.35 lbs
      • Emission Code: 5
      • Fits 1965-1990 Chevrolet And GMC 396-454 Mark IV Big Block With 2.40-Inch Round Ports

      Description

      High-Performance Sealing. The 1965-1990 Big Block gasket set provides reliable sealing for Chevrolet Mark IV engines. Designed to withstand high temperatures and maintain a secure seal, these gaskets help prevent exhaust leaks and support optimal engine performance across street and racing applications.

      Construction and Appearance. Crafted from high-temperature steel core and graphite-faced exhaust material, these gaskets feature an expanded steel core for added stability and torque retention. The graphite impregnated facing delivers excellent heat resistance and transfers heat away from the cylinder head to enhance durability and effective sealing. The gasket’s surface conforms to minor irregularities, ensuring a precise fit.

      Installation. Installation is straightforward without requiring drilling, as the gasket is designed to meet original equipment specifications. The gasket can be trimmed if modifications are needed, allowing adaptability for customized port applications.

      Warranty. Covered by a manufacturer’s limited 90-day warranty.

      Application. This gasket set fits Chevrolet and GMC 396-454 Mark IV Big Block engines from 1965 through 1990 featuring 2.40-inch round ports. It is suitable for original equipment replacement, high-performance street, drag race, and oval track use.

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      4.5

      Reviews of Mr. Gasket Classic Engine Products (38)

      Questions & Answers

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