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Old 12-16-2012, 01:53 PM
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Okay. I been helping a friend with his fox lsx swap and for helping him out he gave me a th400. Now the thing is he has no idea about it, what it came out of, what year it is, basically just knows its a th400. I got it with the tranny and a basket of parts. Where do I even begin to start researching what I have? I work with a guy who used to do transmissions for a living and he said he would go through the box and everything to get me a run down of what is missing and what I have and need to buy.

So are there numbers somewhere on the tranny that I could search to get more info on the tranny?
Old 12-16-2012, 02:51 PM
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one big identifier is the tailshaft. if it is very short and has a yoke that bolts to the tailshaft, it is a truck/van tranny. the car ones used a standard style slip yoke
Old 12-16-2012, 05:36 PM
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There should be a 1" square tag on the sid of the trans held on by a rivet that will contain the info you need.
You will have to decode it.

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Old 12-16-2012, 06:11 PM
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Originally Posted by badhombre
one big identifier is the tailshaft. if it is very short and has a yoke that bolts to the tailshaft, it is a truck/van tranny. the car ones used a standard style slip yoke
Its not put together. Its just the case and then all parts are in a basket
Old 12-16-2012, 06:14 PM
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I found the tag.

Numbers are 86 FMA 62461

I put them in google and came up with nothing. Anywhere else I could look?
Old 12-16-2012, 06:41 PM
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Originally Posted by SCott5
Its not put together. Its just the case and then all parts are in a basket
You should be able to identify the tail shaft. It will either be on that is 3" long or one that is I think 9" long. After that, there is not much else you need to figure out about it.
Old 12-16-2012, 07:11 PM
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86 is the year, so 1986.
FM means 350 V8 in a C30 series pickup.
Not sure about the A

From the Book How to work with and modify the TH400 by Ron Sessions.

Ron
Old 12-16-2012, 07:25 PM
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Yea I too am confused about the A.. The number on the tailshaft is 8624486 LESTER-8 which from what I am researching is a short tail
Old 12-16-2012, 08:09 PM
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Short tail is 4.25" long. The long ones were uncommon.
Trucks typically used a bolt on rear yoke because they had a 2 piece driveshaft. There is a difference in the trans output shaft, but can still be used for a car application.



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