Do any other 203 t-cases interchange with dodge? - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 12-12-2005, 01:57 PM   #1 (permalink)
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Do any other 203 t-cases interchange with dodge?

I am looking for a T-case for my '79 dodge with a nP435 and need to know if I can use the T-case of any chevys, or anything else?

Also, I'm selling a doubler with a dodge range box on it, will that bolt to anything besides a dodge? thanks, Phillip
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Old 12-12-2005, 03:03 PM   #2 (permalink)
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its most likely going to have a 23 spline input, where Fords and GM used 28 and 31( or 32, forget)
Change out the tranny.
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Old 12-12-2005, 03:36 PM   #3 (permalink)
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GM's are 10spline (manuals), 27spline(TH350), or 32spline(TH400). Fords are 31 spline. Dodges are 23 spline. The Dodge case is the same as the Chevy case. Only the input gear (and therefore spline count) is different. Fords have a different case than the GM/Dodge.
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Old 12-18-2005, 11:09 PM   #4 (permalink)
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Thanks. -Phillip
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Old 12-18-2005, 11:31 PM   #5 (permalink)
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the physical case body and internals are the same as a GM NP203, the only difference being the input gear. If you have a very hard time finding a dodge box you can get a GM box and purchase the input gear on the aftermarket. We generally sell an input gear of this type for ~149.

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Old 12-19-2005, 12:09 AM   #6 (permalink)
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Is the dodge 203 the same when mounted to the 435 and 727? Thanks, pHILLIP
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Old 12-19-2005, 10:24 AM   #7 (permalink)
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Yes, The 435 and TH727 are both 23 spline input gears.
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Old 12-19-2005, 10:30 AM   #8 (permalink)
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I have a 727/203 in my "stockpile" if your interested.....
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Old 12-19-2005, 10:46 AM   #9 (permalink)
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Quote:
Originally Posted by Shaker
I have a 727/203 in my "stockpile" if your interested.....
Sent you a PM. -Phillip
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Old 12-19-2005, 03:41 PM   #10 (permalink)
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sent you one back
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Old 12-19-2005, 05:10 PM   #11 (permalink)
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any way to upgrade a 727 to use a 32 spline output and then use the 400 203??
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