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Moroso Mustang Polished Aluminum Valve Covers (260, 289, 302, 351W) - Installation Instructions

Installation Time

2 hours

Tools Required
  • Basic Hand Tools Required
American Muscle
Shop Parts in this Guide



Breather Hole Removal:

1. Position the Valve Cover topside down on a surface that will not scratch or mar the finish of the Valve Cover.

2. Make a center-punch mark in the Breather Hole you will be removing. (Some Moroso Valve Covers already have this mark). Use a hole saw to drill a 1-3/16" hole through the Valve Cover.

3. Use a round file to increase the hole diameter to approximately 1.22" and to remove any flashing.

Installation instructions provided by Moroso.

This guide applies to Mustang years: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 and Submodels: Cobra, Foxbody, GT

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