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post #1 of (permalink) Old 03-13-2005, 09:22 PM Thread Starter
 
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TH-350 tech.

Short shaft vs. long shaft...

Short shaft protrudes 3/8" from the back of the transmission when the tailhousing is off.

How long is the long shaft? are the splines identical?

2wd's are free around here, where as the 4wds are VERY hard to come by, I also don't have the time/knowledge to rebuild one with the new shaft...

Can it be tossed on the chop saw and "modified?"
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post #2 of (permalink) Old 03-14-2005, 09:12 AM
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Re: TH-350 tech.

I don't think you can 'modify' it that way...nor would I want to try.
My tranny shop charge me $150 to install the short shaft in my 4L60E. For another $250, he did a complere rebuild, including a few new parts and Torque Converter. He even supplied the shaft for free (or as he said...."I knew I was saving this shaft for something).
post #3 of (permalink) Old 03-14-2005, 11:03 AM
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Re: TH-350 tech.

There are 3 different shaft lenghts on the TH350 2wd trannys. Most all have 27 spline shafts. But even the shortest 2wd shaft splines start about 2" past where the 4wd shaft ends. You'd need a heck of a spacer to make that work. I purchased a TH350 4wd output shaft for $50.00 for a spare. They come up on E-Bay from time to time, but I'd check with some local trans shops first. Also maybe check with some "chain" type parts stores that sell reman trannys. Often the core is not that much...
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post #4 of (permalink) Old 03-15-2005, 11:04 AM Thread Starter
 
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Re: TH-350 tech.

So, the shafts are all splined about 4 inches. ( the 2wd versions.)

That means if you get the 6", you are still going to cut off about 4" and loose ALL the splined area.

There is enough space there to "respline" the shaft.. and it can easily be done with a steady hand, and small grinding disk. [img]images/graemlins/grin.gif[/img]

I've got a line on a 4wd tranny for free because its pooched, and a 2wd tranny for free because 2wds are worthless, and as it turns out, I've had one of these things about 1 or 2 steps from the rear shaft coming out, so it shouldn't be too big a problem.

Does anyone have a crash course in transmission shaft swapping for me?

Before now I've had the pump, the clutches, and the pan/big plate thingi, and gasket peice all appart.. as well as some smaller bits and peices..

I'm looking for pictures of innards if anyone took any while rebuilding/swapping shafts.
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post #5 of (permalink) Old 03-15-2005, 11:11 AM
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Re: TH-350 tech.

No pics...but I've found the Th350 manual by Petersons to be a good guide.
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