Author Topic: TH-350 Tailstock swap!!!!  (Read 393 times)

Offline kperk

  • New Users
  • Posts: 1
  • Newbie
TH-350 Tailstock swap!!!!
« on: March 20, 2017, 04:27:30 PM »

I have an 84 C1500 with a 355 and a TH-350 with a 9" tailstock and a stock converter.  I am making this truck into a little street/strip project, and a buddy of mine has a freshly rebuilt TH-350 with a shift kit and stall converter in it for DIRT cheap! BUT it has a shorter tailstock!! Am I pooched OR can I just simply swap the tailstocks or am I basically have to completely rebuild the tranny?

Any info or insight would be GREATLY APPRECIATED!!!

Thank you!

Offline VileZambonie

  • Global Moderator
  • Senior Member
  • *****
  • Posts: 16762
Re: TH-350 Tailstock swap!!!!
« Reply #1 on: March 20, 2017, 04:59:35 PM »
The tailshaft housing correlates to the output shaft length. It would be cheaper to have your driveshaft resized.
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]

Offline Irish_Alley

  • Tim
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 12472
  • Family is not an important thing. It's everything.
Re: TH-350 Tailstock swap!!!!
« Reply #2 on: March 23, 2017, 09:43:40 AM »
i ran into the same issue in my 86. the th350 in it was burnt up it had the 9". my buddy had a 6" so i had to find a new/used driveshaft. ended up finding a 2 piece in a bone yard and use that one
If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline hatzie

  • Site Supporters
  • Junior Member
  • ******
  • Posts: 715
Re: TH-350 Tailstock swap!!!!
« Reply #3 on: March 23, 2017, 11:11:55 AM »
Just change the driveshaft and move the transmission crossmember. 

Pretty easy to do.
SVC & wiring mans --> Here or My Bucket @
Parts & Illustr Books -->
GMSTG Textbooks-->
Radio Manuals-->