I began work on the Atlas install this evening. This Atlas is much larger than the NP231 top to bottom, especially on the front output (driver) side.
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Despite this, I’m hoping to exploit the new 1.25” body lift to increase the amount of tummy tuck from 2.5” below the frame to roughly 1.5”. The Atlas has multiple options for clocking. The position of the stock 231 is 13 degrees down on the drivers (front output) side so I started with that. The height of the pole jack supporting the AX15 is at the height the trans sits when using the stock trans mount on the UCF ultra high clearance skid.
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This gave plenty of room on top.
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But that Atlas at 13 degrees also hung down too far to use the UCF ultra high clearance skid. That skid is about 1.25-1.5” below frame belly height (outside) but less than 1” on the inside.
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So next I tried 7 degrees.
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I liked this better. It will require some tub clearancing but should also allow the higher T-case skid.
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Either way the transmission mount plate will need modification and I think I’ve decided to make a custom crossmember rather than have the transmission rest on whatever skid I use.
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I‘ve got some work to do…
You'll like having the crossmember and trans/transfer mount. Makes working on the drivetrain a LOT easier too.