Discussion in 'OffRoad Design' started by reddog64, Nov 25, 2002.
I currently have a TH400/NP 203 with part time...
Is this the right combo to start the doubler?
That is one of the better starting points. You can also use a 350/203. You just need a 205 from a 400 or convert one.
This is what I have. 400/203/205
If you can find a 205 from a 1980ish truck it will be 32 spline and solid yoke.
is that the one I will need? an 80ish one? with NO slip yoke... And does it have to come from a th400....
All of the 205 '80 and newer that I have seen have had the slip yoke. I have not seen a '79 or earlier 205 with a TH400. So it is a toss up, Look for a TH400 version 205 and convert it to fixed yoke, or find a 205 from a TH350 or SM465 and buy the new input gear and have the case machined.
hey im selling a 205 , but it needs bored out for the th400 bearing that goes with the 32spline input . i can bore it out for you if you want . O/T O/T O/T !!
solid outputs on '80-up do exist, I had one in my '82 crew cab. The 205 you need is a pre-85 from behind a 400. It only runs about $250 or so to convert a 205 so keep that in mind as you're looking.
Cool. I thought they switched everything over to slips in 80. /forums/images/graemlins/crazy.gif
so any 205 from a th400 will work, but a solid output 205 will save me 250... aka I dont have to convert a slip one... right?
Just so you know, I have an 88 205 from a 1 ton that came from a th400 with a fixed yoke rear! Problem is it has a long shaft input gear, so that I have to convert with the Ford parts 205 I have!! But no Drilling required!
The pre-85 205 is best because it will have the short input gear but the 85-up 205's work fine also as long as you keep in mind you'll have to change out the input gear for the short version. Once you get into the 80's it's a tossup as to what rear output you're going to get.
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