T-350C Torque Converter Overheat - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- 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 07-23-2014, 08:58 AM
Registered User
Last photo:
Join Date: Jul 2014
Posts: 8
Wiki Edits: 0

Thanks: 1
Thanked 0 Times in 0 Posts
T-350C Torque Converter Overheat

This is a strange one.

I have a Th350C coupled to a 350 small block. I rebuilt the gearbox myself.

I added a Torque Converter Clutch switch on the dash.

I have driven 2000 odd km's without any problems and the TCC works well engaging at around 70km/h when switched on. The internal pressure switch disengages it automatically at low speeds.

The other day, I was cruising at around 120-140km/h for the longest period yet when suddenly the trans fluid boiled over and squirted out of the filler pipe all over the motor.

Lots of smoke and a bit of fire resulted.

From the paint discolouration it looks like the heat was localised in the Torque Converter.

I have a trans temp gauge and while I was cruising with the TCC on the trans temp was lower than normal (when cruising with it off). This is what I would logically expect as the fliud coupling would not have been generating heat.

I also have a trans cooler in front of the radiator and the ambient air temp was around 10 deg C.

After the boil over I replaced the oil and continued to drive 400km's home... without engaging the TCC!

I was wondering if someone can figure out a possible cause for this. The only logical explanation I can figure out is that the TCC was slipping a bit while I was driving causing excessive heat buildup. But then again, it felt very much like direct drive to me and I am pretty astute with these feels.

Please Help,


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
T-350c, Is my converter seated? prettyboyced Transmission - Rearend 4 08-04-2012 12:05 PM
Torque Converter to Flexplate Torque Spec. Needed - 2004R Zeeb Transmission - Rearend 1 05-26-2010 06:47 AM
B&M Torkmaster 2400 rpm stall converter vs. stock torque converter??? zbhover Transmission - Rearend 2 11-02-2008 07:52 PM
stall speed converter on th-350c question tfeverfred Transmission - Rearend 9 08-12-2007 06:19 PM
700R4 torque conv makes camaro overheat J-Dog Transmission - Rearend 3 10-31-2005 08:20 PM

All times are GMT -6. The time now is 06:30 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 Hotrodders.com 1999 - 2012. All Rights Reserved.