Don't know what the letters stand for, but I found that suffix here: http://www.nastyz28.com/gm-chevy-codes/chevy-engine-codes-suffix-6.php
It shows on the chart what that engine was originally used for.
Repost the question and add the suffix code.
its Chevy 454 Big Block Engine
small block 283 64/67
It will be in the suffix code stamped on the block. If it has a "CE" in the suffix code, regardless of displacement it's a replacement block. CE stands for "counter exchange."
This is a warranty replacement engine. There are several decoders for the block numbers for these engine on the web and all require the block serial # as well as this code.
I like to go here: http://web.archive.org/web/20080518030656/http://www.mortec.com and here: http://www.nastyz28.com/chevy-engine-code-stampings.php
Engine, not motor. It's a GM small block - probably the 5.7 liter/350 CID - but all GM small blocks with a 4.000" bore used that casting code at some point. Not sure what the second number is. It doesn't look like a VIN number or block suffix code. To know for sure what you have, look on the front passenger side of the engine. There'll be a small machined pad which will give you the block suffix code. Those numbers will tell you the year, size, horsepower rating, carb used, transmission used with it, and the type of vehicle it was mounted in.
Orange.
there is no suffix for why or suffix code
There is a small pad in front of the right head with the information you're looking for. Here is a website that has a photo and information about decoding the number: http://www.nastyz28.com/chevy-engine-code-stampings.php
The way to determine the engine size, horsepower rating, and transmission mounted to it is the engine suffix code stamped on the block in front of the passenger side cylinder head. It is a three letter code. For example, an LS6 454 with a 4 speed transmission will have an engine suffix code of CRV. The VIN code will only tell you if the car had a V8 or L6 installed from the factory, but it won't tell you WHICH V8 or L6 was installed.
You will need to provide the suffix code from front on the passenger side head of the engine.