[bbowerman]

I bought a 2" longer yoke for my TH350 to TH400 swap and it wont slide in past the seal but it slides onto the shaft do I need a bigger seal?
thanks.

[seven1nova]

Is your 400 out of a truck.

Car is a slip yoke and trucks are bolt type, they won't inter change without some maching.

[rick 427]

^^^ yes...does your output shaft have a threaded hole in the center of it??....and how about the inside of the yoke,is it splined all the way,or is it smooth for the first 2 inches or so?....and is it a new or used yoke?...questions for possible further suggestions.

[prostreet6t9]

There is 2 different seal & bushing diameters for the Th-400.

[bbowerman]

thanks pro 69 I bought the new slip yoke and yes the TH400 is slip yoke style I bought a 2" longer yoke it wont slide past tailshaft housing can I just get another one the diameter of the yoke is too big for the housing it fits the splines though

[bbowerman]

oh, and I was told it was out of a truck it has a hole in the center but it isn't but a 1/4 inch deep and I dont think it is threaded I may be wrong I will double check though

[bbowerman]

also new yoke. the shaft is splined all the way thanks for the help as always

[bbowerman]

my last pic is of the tranny it has some numbers and stuff tacked on the side if that may help in any way?

[bbowerman]

ok sorry for blowing this thread up I used my micrometer and the slip yoke that is too large's diameter is 1.88

[mmerlinn]

If the seal journal on the slip yoke is too large, you need a tail with a larger bore or you need a yoke with a smaller journal.

[bbowerman]

ok I will look for another tal because that yoke was hard to find as it is.

[speedbump]

If you think the yoke was hard to find!?? The housing can be worse. There's an E bay place that has all the yokes for T-400's and others. Offshore, I'm sure, but I got one and it's actually pretty good. If you really get in trouble, I have a housing and yoke left over since I went to a bolt on overdrive unit. You can PM me if needed.

[prostreet6t9]

A yoke is available... Spicer# 2-3-5281X But the yoke is 5.188 long and may not be long enough for you. The seal surface is 1.688.

[bbowerman]

thanks for the help I think this is the most helpful forum online and thanks for the yoke part number and seal surface prostreet6t9
the barrel I need is exactly 2" longer than the TH350 yoke.
I don't remember the length of the TH350 but I will look again when I get home.
also does this mean my TH400 came out of a car since the dimension is smaller.

[bbowerman]

maybe this thread can help others doing the TH350 to TH400 swap I will look up that part and see if it will work or try and hunt down another.

also It would be helpful if you knew the sellers name I am still looking

Edit: I cant find any that fit the 1.6 that are 6.94 or 7" long which is what I need