help decode my engine
 

I have a small block 350 engine stamp is V0512ACM with casting stamp 14010207. Cant find what the "ACM" stands for and trying to find out the exact year and what vehicle was it used for reference trying to find the correct oil dipstick.

What year, make is your Chevrolet? Your 14010207 engine code indicates a 350 V8 built from 1980-1985

thats the thing I have no idea the engine is currently on my jeep 1981 cj7. Im having a problem finding the correct dipstick tube I ordered a v8 350 1980-85 dipstick and the part that comes welded on to attach to the engine block is about 1 inch too short.

Since your numbers indicate your engine is 1980-1985, see if this dipstick will work for you.
https://www.holley.com/products/acce...es/parts/9705G