• Just a 4V intake. The casting date would suit any 289 4V induction engines assembled in Cleveland between about three to five weeks after the casting date.

    There were 1962-63 cast iron 4V intake manifolds used only in special high performance engine before 1964 model year engines started being produced in August 1964.

    Experimental High Performance 260 (literally hand made components by Ford engineering), only 15 engines made. A few went into Cobras.

    High Performance 260 engines (called "semi-production" in a Ford internal memo, only 185 engine made with several different iron 4V intake manifolds. A small number of them went into new Cobras.

    1963 Experimental High Performance 289 engines, at least 11 engines were made and perhaps more. At least two went into new Cobras and perhaps more.

    Late 1963 production High Performance 289 engine, about 1,550 engines made and shipped from Cleveland before production of them stopped in June 1963.

    The castings known:

    XHP-260: SK 12569 w/provision for road draft system. (a 1962 model type casting)


    HP260: no identification w/provision for road draft system. (a 1963 model type casting)


    HP260: C2O 9425-K / XE 106391 w/provision for road draft system. (a 1963 model type casting)


    HP260: XE-106394 w/provision for road draft system, one that is believed to have been used in a Cobra still exists and I am told a second one from some other car still exists. (Remember Shelby American was not the only user of HP260 engines in new cars.) (a 1963 model type casting)


    HP260: C2OE-9425-K w/provision for road draft system (none have been confirmed on a Cobra so far). (a 1963 model type casting)

    HP289: C3OE-9425-E w/provision for road draft or 1963 PCV system. Ford wise mid-1963 model or 1963½ model year. The only production 4V cast iron intake manifold made exclusively for 1963½ or any other model year HP289 engines.

    Dan

    Edited once, last by Dan Case: add details (September 21, 2024 at 5:07 PM).

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