R380/LT230 compatibility - Defender Source
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  #1  
Old May 11th, 2009, 02:22 PM
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R380/LT230 compatibility

Its my understanding that any LT230 from a Disco I will work with any NAS 90 with an R380. I was looking through the FAQ and the "archives" it seems there may be a discrepancy with the cross drilled input and the ZF input gears. Would someone please clarify. thank you.
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Old May 11th, 2009, 02:23 PM
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It has to do with 2in output and 3in input not going together or 3in ouput and 2in input not going together. I just forget which way it does not work.
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Old May 11th, 2009, 02:30 PM
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Which trucks had the bigger input, does it end up being an ZF vs. R380 thing?
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Old May 11th, 2009, 03:00 PM
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ZFs had either 2in or 3in, but since they are stub shafts you can swap them out easily. All NAS R380s had 2in outputs I believe. The cross over to 3in inputs on LT230s was in 97 IIRC (you would have to look it up) which was the same time the ZFs switched to 3in.

BTW it is not bigger, it is just the splines are longer. The shaft on the R380 is the same size and spline count.
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Old May 11th, 2009, 03:22 PM
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If I can remember it seems like the output shaft I put on the ZF in my Classic during the LT swap had 3"splines. I know the R380 has to be dissected to get to the shaft we are discussing. Its starting to sound like the ZF in terms of longevity etc. is superior to the R380.
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Old May 11th, 2009, 03:32 PM
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Quote:
Originally Posted by rover4x4
Its starting to sound like the ZF in terms of longevity etc. is superior to the R380.
Duh.

They are basically indestructable from my experience.
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