Block serial numbers - what are these?
#1
On The Tree
Thread Starter
Join Date: Aug 2006
Location: SW Virginia
Posts: 107
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Engine builders should know this. I got my LS2 block in today. What are these numbers? There are some original serial numbers on it, like this "72743" maybe a casting number?
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo1.jpg)
and "7277143022", this looks like an original serial number.
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo3.jpg)
But then there's this that looks machined in recently (Get a load of the upside down "5" on the left....
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo4.jpg)
And this one, "X245-247". Anyone know what is with the dots?
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo1.jpg)
and "7277143022", this looks like an original serial number.
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo3.jpg)
But then there's this that looks machined in recently (Get a load of the upside down "5" on the left....
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo4.jpg)
And this one, "X245-247". Anyone know what is with the dots?
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo2.jpg)
Last edited by kelp; 08-25-2009 at 11:08 PM.
#2
TECH Resident
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Engine builders should know this. I got my LS2 block in today. What are these numbers? There are some original serial numbers on it, like this "72743" maybe a casting number?
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo1.jpg)
and "7277143022", this looks like an original serial number.
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo3.jpg)
But then there's this that looks machined in recently (Get a load of the upside down "5" on the left....
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo4.jpg)
And this one, "X245-247". Anyone know what is with the dots?
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo2.jpg)
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo1.jpg)
and "7277143022", this looks like an original serial number.
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo3.jpg)
But then there's this that looks machined in recently (Get a load of the upside down "5" on the left....
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo4.jpg)
And this one, "X245-247". Anyone know what is with the dots?
![](http://i106.photobucket.com/albums/m242/kellypf/09-08-26-BlockSerialNo2.jpg)
![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
Last edited by rsz288; 08-26-2009 at 06:52 AM.