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  1. gringeltaube

    What is the SAE bell-housing size for the 8.3 and 250?

    Sorry Jeff, I don't have a NHC250 bellhousing to compare to. The M939's 6CTA- rear engine mounts are positioned at the same height as well as equidistant, front-to-rear and to center of crank. Hope these two pictures may answer your question...? G.
  2. gringeltaube

    What is the SAE bell-housing size for the 8.3 and 250?

    Below are pictures of the 8.3L bellhousing out of a M939 series truck. 12 bolts on a 18.375" bolt circle is a SAE#2, confirmed. G.
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