Th375 Indentification - 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 02-28-2006, 07:29 PM
Registered User
 
Join Date: Jul 2004
Location: MICHIGAN
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Th375 Indentification

Hello again, my question is can anyone tell me what the tag on the side of my transmission means: 87-LAA-4172...I know its an 87 TH375 but is it a lock-up type converter, how do I tell? Computer controlled ect. ect.? What does the other letters and numbers mean? Came out of an 87 chevy pickup with a 4.3. Im swapping the 4.3 with a 383 stroker motor.

Thanks,
Scoops

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-28-2006, 08:29 PM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Bar under the dash
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,073
Wiki Edits: 1659

Thanks: 324
Thanked 97 Times in 94 Posts
Quote:
Originally Posted by Scoops
Hello again, my question is can anyone tell me what the tag on the side of my transmission means: 87-LAA-4172...I know its an 87 TH375 but is it a lock-up type converter, how do I tell? Computer controlled ect. ect.? What does the other letters and numbers mean? Came out of an 87 chevy pickup with a 4.3. Im swapping the 4.3 with a 383 stroker motor.

Thanks,
Scoops
If you do have a t-375 tranny , they never had lock up converters.
__________________
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 03-01-2006, 05:49 AM
Registered User
 
Join Date: Jul 2004
Location: MICHIGAN
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
It says TH375 right under the tailshaft, and has a 400 transpan. With the tag reading 87-LAA-4172, I figure it being an 87'-L meaning longitudinal but as for the rest got me...

Scoops
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 03-01-2006, 07:44 AM
tnsmith10's Avatar
when will it rain???
 
Last photo:
Join Date: Jul 2003
Location: where its very dry and dusty
Age: 43
Posts: 1,297
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
if it definetly has a 400 pan, measure the dia. of the yoke. large yoke,(like the size of a 4 x 4) th400, small yoke,(like a th350) th375
as far as the electrics go, there should be a single wire, and thats for passing gear.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-01-2006, 12:39 PM
Registered User
 
Join Date: Jul 2004
Location: MICHIGAN
Posts: 16
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
tnsmith10 - It only has a single wire on left side of the trans. was TPI but I'm going with Carb. where do I send that wire for passing gear? Does it work off RPM?
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-01-2006, 02:17 PM
curtis73's Avatar
Hates: Liver. Loves: Diesel
 
Last wiki edit: How to find cheap parts
Last journal entry: 1999-2001: Getting it on the road
Last photo:
Join Date: Dec 2005
Location: Pittsburgh, PA
Age: 40
Posts: 5,128
Wiki Edits: 16

Thanks: 0
Thanked 2 Times in 2 Posts
The wire goes to a switch that you can mount on the throttle or the accelerator pedal. Its a rotary switch that simply gives 12+ to that solenoid at WOT. Nothing special or voodoo, just a plain switch. Hit the junkyard and find pretty much any car equipped with a 400 or 375 and grab the kickdown switch and bracket off the carb. Polarity is not an issue.
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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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
TH375 tranny? 50cruiser Transmission - Rearend 5 08-28-2005 11:54 AM
Parts Indentification Manuals question JhnBrackett Hotrodding Basics 1 12-01-2004 11:02 AM
vehicle indentification problem 49olds Hotrodding Basics 16 03-13-2004 06:52 PM
engine indentification poundst Engine 1 12-15-2003 08:39 AM
quadra-jet indentification what model is it? mtinsley Engine 4 09-15-2003 07:57 AM


All times are GMT -6. The time now is 03:23 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.