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Message: [QUOTE="me2, post: 321828, member: 3825"] [B]Transmission Adapter[/B] People keep talking about the trouble and cost of making the transmission adapter plate. It really isn't a big deal. The 6R140 uses an SAE #2 [COLOR="Red"]type[/COLOR] bellhousing. By type, I mean that it has the usual 12 holes equally spaced around the circle like a regular SAE #2 bellhousing, EXCEPT that the hole by the starter is out of position and there are a couple alignment dowels that aren't on a usual SAE #2 bellhousing, instead of the alignment lip that is on some. I made the transmission adapter plate for the swap (5.9 CR and ZF6) on my old truck. The transmission pattern for the 7.3 ZF6* is much harder to set up than the transmission pattern for the 6R140. The block pattern is the same for the 5.9CR and the 6.7 CR and I still have my CAD files, so it shouldn't be very difficult to figure out the adapter plate geometry. However, there are a couple snags. Snag #1 is that I don't have the flex plate figured out yet and you need to get the flex plate depth correct before you make the transmission adapter plate. The stock Dodge Cummins flex plates have been known to fail with increased power. They are out of the question. The Ford flex plates seem to be fairly stout. But the center diameter and bolt pattern from the Ford 6.7 don't match the crankshaft pattern on the Cummins 6.7, so its not a simple bolt on. As a matter of fact, the Ford flex plate uses 10 bolts and the Cummins uses 8 bolts. And there is a flexplate depth spacing issue as well. I haven't figured out what I am doing to do about this yet. Options include machining my own flexplate, buying an aftermarket Cummins flexplate or making an adapter to mount the Ford flex plate to the Cummins crankshaft. Snag #2 is that Ford puts the starter on the passenger side and I hate it there. Dodge puts it on the driver's side where I like it, but with the ZF6 that meant notching the transmission bellhousing to put it there, so that the starter nose didn't interfere with the bellhousing. The 6R140 bellhousing is much larger in diameter than the ZF6, where the starter mounts, but I think it would still require a bit of a notch in order to accomodate the starter. The problem with notching the transmission bellhousing is that once you notch it, you pretty much own it. It can never be used as a core in the future and pretty much nobody wants to buy it if you ever want to sell it. Decisions, decisions. I really want to keep the starter on the driver's side, especially because I'll have twin turbos and their piping and the heat from their piping on the passenger side. So the low down on the adapter plate is that it isn't a bit deal other than the normal adapter plate detail stuff that needs to attended to. The flex plate is a bigger deal, but no bigger than it would be with any other transmission. Sorry for being so wordy. I'm out of town working on a project and things are really slow, so I have lots of spare time. Thus I am posting in a rambling manner. *For those that aren't aware, the ZF6 bellhousing is different for the 6.4, as is the transmission itself. [/QUOTE]