[Ron61]

CS69Er,

I don't have my book that breaks down everything about the engines but the 353 stamp was used on all FE blocks from the 332 cubic inch to the 427-428 series. ON these eingines the date stamp will be under the valve covers on top of the head also. The rest of the numbers and letters you gave should break down into year, month, and day but as I said I don't have my book with me. One thing for sure you cvan do to see if it is an FE engine or a 385 series which is the 429, 460, 512 etc is measure the bell housing bolt holes. They are different and an FE bell housing won't bolt up to a 385 series and visa versa.

Ron61