How to ID a Small Block Engine Block:

wmckusick said

I read through this post and don't seem to be able to desipher what is in my car.
On the right side (oil filter) it has te shift (N) by my guess and 2-18-66. I was told the history that the car is maybe the last one off the line 7/31/66. I'll research more on that later.

On the left side I only seem to have 2806080-1

In the next couple of days I'll dig around and see if I can find the front side numbers and any other ID to confirm what I'm hoping is the original 273 Commando.

Click to expand...

The early 273's did not get the VIN number stamped on the block, therefore it makes it impossible to tell which car it originally came in....

Your engine block may or may not have been "the last one off the line", but there are no guarantees without more documentation. If the engine was first time through, then it wasn't for sure, but if it was recycled or put in a bank of engines, then it could have, like I said, there is no way to tell for sure without more documentation....