4.3 Engine Number - 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> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-27-2011, 07:20 PM
Registered User
 
Last photo:
Join Date: Feb 2011
Location: USA
Posts: 64
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
4.3 Engine Number

Hope to make a long story short. I am putting a 1985 4.3 Chevy V6 motor in my old 1928 truck. It fits and has a carburetor and no computer. I found one for the right price and I am happy. With that; I have to get a title for the 1928 as it was used its entire life as a farm truck; no cab card, no license plates. The MN DMV has a protocol that if a vehicle has no identifying marks, the engine number will be used as the new VIN number on the title. So far, so good, but here it comes. The 4.3 engine code number is on the ledge as are all SBC motors. I have decoded MANY of these numbers. This engine stamped number is very difficult to read. I have cleaned it, and can identify part of it and need help with what it should look like and how to find out more about a 4.3... Nasty Z28 does not seem to have this information. Is there another website or expert that does? Is there someone on the board that has a 4.3 that would tell me how many characters I am looking at? The motor was from a 1985 conversion van that was crushed after the motor was removed, no VIN, no title, so no help there either. FYI: I believe the code is 171207TNF ..... The 1207 in the middle is very recognizable. The rest is debatable. Ideas?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-27-2011, 07:45 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 60
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 598 Times in 547 Posts
An example of a 1986 Chevy 4.3L V6 code from the right front of the block is:

T0213 UAB
1GF71xxxx (x= numerals)
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-28-2011, 11:39 AM
Registered User
 
Last photo:
Join Date: Feb 2011
Location: USA
Posts: 64
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks

That really helps..... I will go back and take a look at what is in front of the 1207.. It looks like the rest of the number may be correct, or at least good enough to fool a few people at the DMV.... I wonder if the T in the beginning is the kind of engine? There was a T and I believe an N.... I was told that one of those letters should also be stamped somewhere on the front of the block but if it is there, I can't see it.... Thanks again... I will go back and look at the very beginning.....
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 03-28-2011, 11:45 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 60
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 598 Times in 547 Posts
Quote:
Originally Posted by professor229
That really helps..... I will go back and take a look at what is in front of the 1207.. It looks like the rest of the number may be correct, or at least good enough to fool a few people at the DMV.... I wonder if the T in the beginning is the kind of engine? There was a T and I believe an N.... I was told that one of those letters should also be stamped somewhere on the front of the block but if it is there, I can't see it.... Thanks again... I will go back and look at the very beginning.....
The "T" is for the engine plant, in this case Tonawanda. "R" (for Romulus) was also used.

The "0213" above is just a date- Feb. 13th. The "UAB" is a code for what the engine was installed in. In this case it was from a GMC Sierra PU.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-28-2011, 06:32 PM
Registered User
 
Last photo:
Join Date: Feb 2011
Location: USA
Posts: 64
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Production Date

There is also a bunch of information embossed on the back of the motor and this is covered on Nasty Z.... IE.... it has K304 which means the block was made on October ... K.... (the letter I is not used in the calculation of the month) and the next two were the date.... 30th of the month, and the 4 was 1984...... It also has 4.3LG (I know L = liter) anybody know what the G stands for? Then there is also SG1 and if someone knows what that is I would appreciate a heads up on that as well... Finally, I THINK the last three letters (suffix) is TNF... If UAB is a Sierra truck, does anybody know what a TNF is? I do know the motor came out of a 1985 Conversion van and that is it..... thanks.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-28-2011, 06:35 PM
Registered User
 
Last photo:
Join Date: Feb 2011
Location: USA
Posts: 64
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Remembered

I just remembered that the G in the 4.3LG stands for "gasoline" because I do believe a diesel block was also made.....
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 03-28-2011, 06:43 PM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 60
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 598 Times in 547 Posts
The "G" is for the fuel, "Gas" in this case.

Don't know what TNF is but it's likely for a van like it was installed in if original. V6 suffix info is scarce- there's some on S10's here.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 08-07-2012, 12:49 PM
Registered User
 
Last photo:
Join Date: Aug 2011
Location: hesperia ca
Age: 57
Posts: 64
Wiki Edits: 0

Thanks: 11
Thanked 1 Time in 1 Post
86 4.3L block info

know this and old posting hopefully someone will respond. My casting # is 10105867 stamped # w9t4fmc any help would be greatful
Reply With Quote Quick reply to this message

Recent Engine 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
Engine number help 66Caprice66 Engine 2 03-24-2009 05:11 PM
Help id engine id number Ed King Engine 2 09-13-2007 09:42 PM
engine id number michael450r Engine 6 01-21-2007 05:39 PM
engine number help carnell Engine 0 08-03-2004 04:09 AM
Engine number Dirk Engine 1 07-03-2004 11:41 AM


All times are GMT -6. The time now is 11:29 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.