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Tech & Fab
Can you change TH400 spline?
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<blockquote data-quote="mudracer" data-source="post: 812788" data-attributes="member: 16745"><p>there are three different length output shafts for th400 to 4x4 transfer cases.</p><p></p><p>NP203 is the shortest.</p><p>NP241/np208 is an inch longer</p><p>np205/dana20 use the same length shaft, and the Dana 20 shaft must have the bolt hole in the end drilled and tapped into the shaft to retain the gear.</p><p></p><p>For cheap guys like myself, you can use any car trans with the short tailhousing, remove the tailhousing, and bolt up the trans to an NP205 or dana 20. just make sure if youre bolting it to a dana 20 that you have a boltyoke output shaft *it has the hole drilled and tapped.</p><p></p><p>I think I have some pics that may help with this identification....</p><p></p><p>oh, as for the adapter that came from a th400/np208 in a hummer... yeah, it also came from a suburban with that combo, from any 87 or newer 3/4 ton with a th400 and np241 as well. its not uncommon.</p><p></p><p>attached are the 3 different length 4x4 shafts, not counting the 10 spline jeep shaft.</p></blockquote><p></p>
[QUOTE="mudracer, post: 812788, member: 16745"] there are three different length output shafts for th400 to 4x4 transfer cases. NP203 is the shortest. NP241/np208 is an inch longer np205/dana20 use the same length shaft, and the Dana 20 shaft must have the bolt hole in the end drilled and tapped into the shaft to retain the gear. For cheap guys like myself, you can use any car trans with the short tailhousing, remove the tailhousing, and bolt up the trans to an NP205 or dana 20. just make sure if youre bolting it to a dana 20 that you have a boltyoke output shaft *it has the hole drilled and tapped. I think I have some pics that may help with this identification.... oh, as for the adapter that came from a th400/np208 in a hummer... yeah, it also came from a suburban with that combo, from any 87 or newer 3/4 ton with a th400 and np241 as well. its not uncommon. attached are the 3 different length 4x4 shafts, not counting the 10 spline jeep shaft. [/QUOTE]
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Can you change TH400 spline?
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