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Thread: Conclusive info on 4D56 head onto 4D55 block info?

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  1. 01-02-2021 10:06 PM #1

    camoit's Avatar
    camoit
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    The reason they make different thickness gaskets is to compensate for machine work on the head and block. If you take off .001” then you need to add it back with the gasket
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  2. 01-03-2021 05:44 AM #2
    Balcorn80
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    Yep. And according the the factory service manual, the first 2 grades are appropriate for non-turbo and the latter 3 are appropriate for turbo'd motors. Machined heads\block or not.
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