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Message: <blockquote data-quote="4play" data-source="post: 1604315" data-attributes="member: 7223">There are many upgrades you could do and the level of upgrades is dependant on what you want to do with it and how much money you have.  Its fairly easy to get a 12v to around 350-400HP and 800-1000lb-ft torque. These transmissions had problems with stock power levels so I would consider some basic stuff.   I would at least consider an upgraded  valve body, or valve body mods/shift kit, torque convertor at least a single disk billet convertor (custom stall optional), upgraded clutches/bands and servo's and servo levers.   You can find upgraded parts within factory apps too.  47RE and mostly 48RE parts are interchangeable the 48RE has a few goodies for the 47's.  As long as its not for some type of racing, abuse or pull truck, I dont think you need to go crazy with the alloy shafts and custom hard parts though.  I would think the T/C might be the biggest money chunk on parts. There are also very reputable companies that specialize in diesel trans/perf and sell rebuild kits too.   I would say if you are wanting a strong rebuild and are mostly stock, just call a local diesel perf shop and see who they recommend and call them.  Most trans shops will probably be fairly familiar with 46/47/48 trans Google companies like these, if not interested in their products you might at least gain some knowledge Goerend Transmissions ( Dave Goerend ) he is an outstanding guy and very knowledgable on dodge trans apps. DTT transmission, DTT is a big perf trans companySuncoast, another big perf trans shopBDATS</blockquote>

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