7.3 OEM Commercial Option

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    Jason DJason D
    Keymaster

    OEM commercial truck adapters were used to adapt the commercial 7.3L T444E International engines to Allisons in medium duty trucks. These engines were very similar to the 7.3 Powerstroke, and the adapter interchanges as far as I know.  Be aware that International used both SAE 2 and SAE 3 – the engine and trans adapters must match.  The advantage these adapters have is they are factory designed components and the transmission cooler connections are on the bottom of the bellhousing, rather than on the passenger side where space is limited already with your exhaust.

    If you get a Chevy Allison, the bellhousing can be changed to the SAE 3 version.

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