| |
Click on image for the lowdown. 
====
| | |
7 members (Otto Skorzeny, UtahYork, arustycars639, Ponchogl, 5cameo8, Gray_Ghost, jmoore),
88
guests, and
0
robots. | | Key: Admin,
Global Mod,
Mod | | | Forums66 Topics128,108 Posts1,056,562 Members48,448 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Feb 2010 Posts: 54 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2010 Posts: 54 | When I got my 46 chevy pick up in had 42000 miles on it. I has been setting in a shed for years and needed a lot. One thing is the tires. Can some one tell me how old they are from the serial number. I know this was covered recently but I can't make out when these tires were new.
m55ca72
m55ca38
c40ul763
They still look good but I would be afraid to try to go far on them.
Monroe McKill
| | | | | Joined: Aug 2008 Posts: 82 Shop Shark | | Shop Shark Joined: Aug 2008 Posts: 82 | I'll look and confirm, but I believe the codes are:
Four numbers - WWYY - two digits for week of the year made, and last two for year (post 2000).
or
Three numbers - WWY - where Y is the last digit of the year. These are pre-2000. I don't know how to tell of a 529 is the last week of 1999 or 1989.
1956 Chevy 3600 Dually
| | | | | Joined: Aug 2008 Posts: 82 Shop Shark | | Shop Shark Joined: Aug 2008 Posts: 82 | Just read in my notes that there is supposed to be a triangle after the three digit code to indicate decade of 1990... no triangle means decade of 1980. Hmm.
These three / four digit codes are usually in a little oval or some other formation, because these are changable casting codes and not part of the permanent casting. Hope that makes sense.
1956 Chevy 3600 Dually
| | | | | Joined: Nov 2008 Posts: 21 New Guy | | New Guy Joined: Nov 2008 Posts: 21 | DOT codes are a 10 to 12 digit number located near the letters "DOT". BTW the digits can be numbers or letters.
The first 2 digits are a code for the manufacturing plant.
The next 2 digits are a code for the tire size.
The next 3 or 4 digits are a code for the type of tire.
The last 3 or 4 digits are the date code. The format is week/week/year/year or week/week/year
Starting in the year 2000, the date coding used is 4 digits. That means the highest number you should see for the year is 08. Before 1999 the format was 3 digits. 1999 and 2000 are transition years, so you will find both 3 and 4 digits.
| | |
|
|
| |
