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I've been doing alot of research on trying to convert my 73 dodge b300 van to 4x4 as a project for the last year as my covid hobby. I'm running a 318 la with the stock mopar 727 and stock rear bearing 4.10.

I've came across a 71 scout ii 727 w/ married dana 20 tcase. I was informed by several people that it should fit up to a 318 perfectly.... that was horrible lie, but not a bad loss cause I got the ihc tranny for $100 cause the guy didnt want it to go to the junk yard.

I still believe I could make good use of it for my van. I just idk what direction to go with it now. I've found some postings that goes very light or no suggestions on swapping the internals. I've also found that both versions internally are identical. My thoughts are if they are identical internally could I just swap the tails of the both of them and call it a day, seeing that the only difference is the bell housing? Wouldnt the output shafts be similar to and swappable?

I've been telling myself to hold off on this part on the build journey, but man... lemme tell you I've been a man possessed trying to figure out this beautiful puzzle.

Any help, suggestions, or input would be greatly appreciated.
 

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While you can unbolt the tail end of the case, swapping the output shaft, requires pulling all the guts out from the main case. The output shaft is the last oart out, and the first back in. The tail end of the case, just holds a bushing, the speedometer drive and governor parts.
 

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pull both tail housings off , first thing would be to count [ measure ] output shaft teeth , IF the tooth count is the same [ 23 ?? ] then next is measure output shaft length , if its too short yer beat , if its to long maybe theres enuf spline to cut it down , last thing is where on the output shaft the tail support bearing sits , if its in the wrong spot yer beat again

next question whats the bolt pattern of the dana 20 t-case , read everything you need to know below

NOTE / reading the link below l learned the ONLY two t-cases [ drivers side drop ] that will bolt to a dodge tranny are either a IHC or Jeep dana 300 with 23 spline , there is NO way the dana 20 is gonna work unless you change output shafts

 

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the IH V8 did use a 727 internals tranny ..
 

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basically you need to swap the IH case for the Dodge case. Gut them both, put the IH guts in the Dodge case.

Note, if you know what to look for you might find stronger parts in the van trans due to the gvw difference between a Scout and B300.

There's no modifying the van output to work with the Dana case. The connection is very different than typical New Process cases.
 

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inter 1 ton pick ups also used the 727 trans with the 345 or 304 inter v 8 in 4x4 ...
 

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I worked on my brothers , but that was in 1975 so yeah it may have been divorced , do not recall , only that it took a 727 "kit"
 

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I worked on my brothers , but that was in 1975 so yeah it may have been divorced , do not recall , only that it took a 727 "kit"

ALL Scouts and Scout ll were married t-cases
 
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