Article 1106 - Power Valve Service Replacement - Holley Carburetor

TSB #70 - June 23, 1967
(All 1967 Fairlane and Mustang Units with 390-GT Engine)

The service replacement power valve presently specified in the Parts Catalog for all Holley 4V carburetors applied to the 1967 Fairlane and Mustang 390-GT engines is improper. This power valve, C0AZ-9A565-A, does not have sufficient thread length to properly seat in the metering block.

When power valve replacement is required, the correct valve B8LY-9A565-A must be used. The Parts Catalog will be corrected to indicate this proper application.