The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-24-2010, 06:13 PM   #1
cppursell
Registered User
 
cppursell's Avatar
 
Join Date: Dec 2008
Location: San Francisco, CA
Posts: 140
TH400 driveshaft not going all the way in

My friend took out his transmission (TH400) to install a new fluid pump, and then re-attached it to his truck. He is having trouble inserting the drive-shaft all the way. He says it won't insert fully, and has tried lubing it and twisting it, but it won't go all the way in.

Have any ideas?
cppursell is offline   Reply With Quote
Old 11-24-2010, 07:17 PM   #2
Transbuilderguy
Registered User
 
Transbuilderguy's Avatar
 
Join Date: Jun 2010
Location: Mt Dora, FL
Posts: 99
Re: TH400 driveshaft not going all the way in

well its not supposed to be bottomed out in the trans.
Transbuilderguy is offline   Reply With Quote
Old 11-24-2010, 08:50 PM   #3
69 longhorn
Registered User
 
Join Date: Aug 2001
Location: rock island,il,usa
Posts: 5,382
Re: TH400 driveshaft not going all the way in

Quote:
Originally Posted by cppursell View Post
My friend took out his transmission (TH400) to install a new fluid pump, and then re-attached it to his truck. He is having trouble inserting the drive-shaft all the way. He says it won't insert fully, and has tried lubing it and twisting it, but it won't go all the way in.

Have any ideas?
I have tryed lubing it and twisting it on my best gal....it still wont go all the way in? I will bet some of the old boys are jealose sorry guys, I just could not pass that one up. on the more serious not, is it a modified drivevline, or stock?
__________________
http://community.webshots.com/user/hotrodhorn
69 longhorn is offline   Reply With Quote
Old 11-24-2010, 09:29 PM   #4
cppursell
Registered User
 
cppursell's Avatar
 
Join Date: Dec 2008
Location: San Francisco, CA
Posts: 140
Re: TH400 driveshaft not going all the way in

wow, you are so halarious. You should be a comedian on AGT.


Stock driveshaft to my understanding. See this thread for the context: http://67-72chevytrucks.com/vboard/s...86#post4300086
cppursell is offline   Reply With Quote
Old 11-24-2010, 09:46 PM   #5
raycow
Registered User
 
Join Date: Mar 2003
Location: San Francisco, CA USA
Posts: 2,454
Re: TH400 driveshaft not going all the way in

Look for twisted splines, both on the shaft and inside the yoke. It's not common, but it can happen. You may have to pull the tail housing to fully inspect the shaft.

Ray
__________________
Live more responsibly. Eat lower on the food chain. Eat vegetarians.

Last edited by raycow; 11-24-2010 at 09:51 PM.
raycow is offline   Reply With Quote
Old 11-24-2010, 10:28 PM   #6
clinebarger
Senior Member
 
Join Date: May 2009
Location: No longer here
Posts: 6,250
Re: TH400 driveshaft not going all the way in

Does the end of the output shaft have a threaded hole? If it does the splines on the output shaft are NOT machined all the way because it came with a bolt on yoke.

If this is your problem changing the output shaft with a fully splined one whould be the correct fix.
clinebarger is offline   Reply With Quote
Old 11-25-2010, 04:13 AM   #7
69 longhorn
Registered User
 
Join Date: Aug 2001
Location: rock island,il,usa
Posts: 5,382
Re: TH400 driveshaft not going all the way in

Quote:
Originally Posted by clinebarger View Post
Does the end of the output shaft have a threaded hole? If it does the splines on the output shaft are NOT machined all the way because it came with a bolt on yoke.

If this is your problem changing the output shaft with a fully splined one whould be the correct fix.
Also, be aware that your 64 did not come with a 400 turbo, & that trans is about 3/4 " longer than the old Power glide.If you are using a slipyolk(non bolt on) ,you need 3/4" minimum to 1" max on the slide(check with the weight on the wheels). best of fun,crazyAl
__________________
http://community.webshots.com/user/hotrodhorn
69 longhorn is offline   Reply With Quote
Reply

Bookmarks

Tags
driveshaft, pump, th400

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:21 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com