TH 350 Transmission - 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
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 05-02-2007, 09:36 PM
bct bct is offline
Member
 
Join Date: Jan 2004
Location: Wisconsin
Posts: 46
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
TH 350 Transmission

My Chevy TH 350 transmission makes what sounds to me like a scraping sound in all gears. The fluid is nice and red and doesn't smell burned. The trans shifts fine. While I'm going down the road I slip the trans into neutral and the sound goes away. The scraping sounds like metal sliding against metal and is pretty loud. Thanks for any ideas.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-02-2007, 09:46 PM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Morris update 9-28-2014
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,149
Wiki Edits: 1659

Thanks: 379
Thanked 106 Times in 102 Posts
Quote:
Originally Posted by bct
My Chevy TH 350 transmission makes what sounds to me like a scraping sound in all gears. The fluid is nice and red and doesn't smell burned. The trans shifts fine. While I'm going down the road I slip the trans into neutral and the sound goes away. The scraping sounds like metal sliding against metal and is pretty loud. Thanks for any ideas.

cracked flywheel..

flywheel rubs on the dust cover if there is one.

__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-02-2007, 10:08 PM
bct bct is offline
Member
 
Join Date: Jan 2004
Location: Wisconsin
Posts: 46
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Would the sound stop when I shift into neutral if its the flywheel? I haven't put the dust cover on yet.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 05-03-2007, 12:07 AM
topdogger's Avatar
Newskool
 

Last journal entry: New, Used grill arrived!
Last photo:
Join Date: Aug 2006
Location: Regina, Sask(CAN)
Age: 24
Posts: 246
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I'm having a very similar issue with my transmission. I just put mine in and it sat for a few years. I'm thinking with mine I have some rust buildup in the tranny.

What's the history on your tranny?
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 05-03-2007, 12:41 AM
malibu68's Avatar
Member
 
Last photo:
Join Date: Dec 2004
Location: canada
Age: 28
Posts: 230
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
i have the same problem, i have a th400 and when i fire it up it sounds like something is goin to die. there is a lound scraping metal on metal sound. i think it is the flexplate. i saw there is a part that on the flexplate that was hittin the side of the tranny.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 05-04-2007, 09:07 AM
bct bct is offline
Member
 
Join Date: Jan 2004
Location: Wisconsin
Posts: 46
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I drove the doner car into my garage, pulled the trans and put it into my 55. It worked fine before I pulled it. The only thing I did different was add a floor shifter. Now that I think about it I didn't have the original speedometer cable. I wonder if that could have something to do with it? Plus, I'm still not sure if the sound would go away when I put it in neutral if it was the flex plate.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 05-04-2007, 07:47 PM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Morris update 9-28-2014
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,149
Wiki Edits: 1659

Thanks: 379
Thanked 106 Times in 102 Posts
Quote:
Originally Posted by bct
I drove the doner car into my garage, pulled the trans and put it into my 55. It worked fine before I pulled it. The only thing I did different was add a floor shifter. Now that I think about it I didn't have the original speedometer cable. I wonder if that could have something to do with it? Plus, I'm still not sure if the sound would go away when I put it in neutral if it was the flex plate.

Cracked flex plate under NO load will often be quiet , unless it is really broken in pieces.

.

No load would be in park or neutral.
__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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
buick 350 - chevy 350 72buick Engine 23 10-13-2009 09:38 PM
Chevy 350 to a Buick transmission steveskylark Transmission - Rearend 6 07-17-2005 12:44 AM
transmission problem turbo 350 jester429 Transmission - Rearend 1 10-04-2003 08:34 PM
Turbo 350 Transmission Leaking 63 vette Transmission - Rearend 2 02-19-2003 06:02 PM
1965 c10 - 350 w/3.73 rear and manual transmission... nyabinghi Transmission - Rearend 0 01-28-2003 01:37 PM


All times are GMT -6. The time now is 06:17 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.