The Stovebolt.com Forums Home | Tech Tips | Gallery | FAQ | Events | Features | Search
Help is a click away!

VEHICLE
INFORMATION
KITS


at the

GM Heritage Center
All the details are here.

Searching the Site - a click away
click here to search
New here ??? Where to start?
Click on image for the lowdown. Where do I go around here?
====
Who's Online Now
5 members (Denny Graham, Steelonsteel, 66flea, treegrower, Otto Skorzeny), 52 guests, and 1 robot.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums66
Topics128,076
Posts1,055,924
Members48,430
Most Online14,466
Apr 26th, 2026
Step-by-step instructions for pictures in the forums
Brad Allen's photos

AD Chevy Trucks

Pictures galore
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!

Big Thanks!

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!

Previous Thread
Next Thread
Print Thread
Joined: Aug 2018
Posts: 220
1
Moderator, Great Lakes Bolters
Moderator, Great Lakes Bolters
1 Offline
Joined: Aug 2018
Posts: 220
We have what we believe to be a 261 engine with a strange Engine Serial number of "FIII4L" (Serial Number found on the ledge by the distributor)
The three "I's" in a row is what I find strange. Could this mean that it is a replacement engine? (non-factory installed engine)

Any insight would be appreciated.

Thank You!
--Tom
Attachments
Engine Serial Number.jpeg (168.58 KB, 78 downloads)

Joined: Sep 2001
Posts: 29,269
Bubba - Curmudgeon
Bubba - Curmudgeon
Joined: Sep 2001
Posts: 29,269
Those Is could be 1s.

Find and post the following:
block casting code
block casting date
head casting code
head casting date

Joined: Mar 2004
Posts: 6,214
M
'Bolter
'Bolter
M Offline
Joined: Mar 2004
Posts: 6,214
F = Flint Engine Plant
11 = Month
14 = Day
L = 1958 or newer 261 from a 6000 Series truck

For reasons not known Chevrolet would swap the letter "eye" for the number "1", your code stamping is just one of many examples of this.

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD
Joined: Aug 2018
Posts: 220
1
Moderator, Great Lakes Bolters
Moderator, Great Lakes Bolters
1 Offline
Joined: Aug 2018
Posts: 220
tclederman,
Looks like a lot of great info on your site.
Thank You for sharing!

--Tom

Joined: Aug 2018
Posts: 220
1
Moderator, Great Lakes Bolters
Moderator, Great Lakes Bolters
1 Offline
Joined: Aug 2018
Posts: 220
Mike B,

Perfecto!
Thank you for the info!

--Tom


Moderated by  Phak1, Woogeroo 

Link Copied to Clipboard
Home | FAQ | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Powered by UBB.threads™ PHP Forum Software 8.0.0