This 4.00 block has a suffix I can't find info on? On front of block it has V0205AAS V=Flint 0205 is Feb 5th But was is AAS? Googled and I can not find what this suffix means?
Might be a Jim question, unless it's too new for his records. @squirrel I can't find any accurate records in the archives, but in the waning days of the 1970's, GM did re-use a whole bunch of suffix codes. You might already have all of the information that you are going to get. The casing number 010 simply means that this casting is intended to be finished with a 4.00" bore, and it is. Whether or not it has 2, or 4-bolt mains is up-for-grabs, as that is a finishing process. The only way to determine that is by looking. Other than that, you have what is most likely a generic 350.
Best I can tell the AAS code was used on replacement truck motors....so you won't find the code for it anywhere. One way to tell, is that there is probably no partial VIN stamped next to the number you did find. They only put partial VINs on engines that were factory installed in vehicles...starting in the late 60s, the same time as the 010 block started production. So, you have an old "crate motor".
Thank You! The Truck is a 68 Chev 950 and I suspect this motor was replaced in 69. Runs perfect. One more question, where this number located is not very long area on the block. Most of the time there is a long area for these numbers. Have you seen this before? Or maybe just crate motors looked like this?
The earlier blocks have a shorter pad, like the even older small journal blocks like the 283 and 327. I'm not totally sure on the year it changed, but somewhere around 1970-71 time frame(IIRC) that stamping pad size was increased.
hmmm...I always see the short pad on later blocks, and the long pad on earlier ones. Also, the "font" of the stamps changed and the one in your pic is the later one, and it was a mid-late 70s change. this is an earlier engine, from the 60s (the two letter code tells us that)
The Jalopy Journal
