drive gear problems-th350 - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 06-18-2007, 02:00 PM
Registered User
Last photo:
Join Date: Dec 2006
Location: Brooklyn Park, mn
Posts: 30
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
drive gear problems-th350

When I bought my car, it had the tranny setup for drag racing, and had the hole for the speedometer driven gear plugged. I drove out the plug, added the drive gear (10 tooth tan colored) and retaining clip, the driven gear housing and drive gear.

All seemed good, the speedometer was working fine for the first few miles. Then nothing. I pulled the tailhousing off again, and the drive gear and moved and was loose even though the clip was still on it. I noticed the small nib on the clip and worn down a little. I bent the clip out to add more pressure when I put the drive gear back on. It was pretty darn snug, so I buttoned it up again. All was fine....... for a few miles, then it quite again!

I don't understand where on the output shaft this clip is supposed to secure itself to. The output shaft is smooth other than the splines for the driveshaft. So what keeps the drive gear in place? I know it is the clip, but is the pressure of the clip on the smooth output shaft supposed to be it, and that is all? If so, why does mine refuse to stay put? It seems there needs to be something else.

I might buy a new clip and try it again, but if it does the same thing, I am going to superglue that bugger on there!
Any help is appreciated

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 06-18-2007, 02:08 PM
jakeshoe's Avatar
Last photo:
Join Date: Dec 2004
Location: Texas
Age: 40
Posts: 613
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Try a new gear ( be sure it is for a TH350 and not a 700). They have a slight press fit so they are snug.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-18-2007, 06:30 PM
Crosley's Avatar
Global Moderator
Last wiki edit: T-350 rebuild tech
Last journal entry: 1962 Morris Minor 1000
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 9,272
Wiki Edits: 1659

Thanks: 960
Thanked 300 Times in 265 Posts
there needs to be a hole in the output shaft for the clip to hook into to properly retain the gear on the shaft.

in the posted photo is the common Chevy style speed-O clip (center of picture) to be used on a t-350 with the proper plastic gear.

Dont worry how old you are... it is the mileage on your body that adds up.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-18-2007, 07:07 PM
Registered User
Last photo:
Join Date: Dec 2006
Location: Brooklyn Park, mn
Posts: 30
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
This may sound dumb, but is there output shafts that don't have the hole? I did mine while the tranny was in the car, so I could not see the entire shaft, but I did not see a hole.

I hope I just over looked it. Next time I will take a flashlight and mirror and try and find the hole and line it up with the new clip. My clip is just like that except that little nub that I assume goes in the hole has ground down rubbing against the shaft.

Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
stalling a Pete Jackson Gear Drive in a SPC tim gleason Engine 2 06-22-2006 07:54 PM
Driven, drive gear info 87442lover Transmission - Rearend 5 07-27-2004 08:11 AM
Erson Gear Drive Woes blndweasel Engine 9 07-14-2004 09:53 AM
Bad gear drive? Marcus Engine 0 03-14-2004 04:44 PM
Gear Drive?? horvath Engine 9 02-12-2003 06:46 PM

All times are GMT -6. The time now is 08:38 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.