Whats the deal with 340s?

I know that 340s were a strong running little small block but really is the difference? I am curious because I am looking at buying a 73 dart parts car with a 340. I currently have a 99 360 magnum and want to know the real performance advantage to a 340 than a 318, 360, or even a big block. Thanks and sorry for my ignorance.

... Give a core to a good builder and the top 3 (318,340, and 360) can be made to whatever power level one needs.

Pretty much correct for the short answer. 340's deservedly made their reputation by beating almost all comers, in a $3,000 car, new. They had all the right parts and were optimized from the factory. You can do the same with any of the 3 and even the 273, if you know what you are doing. It just comes down to what you have available. Then meeting your goals, if you are smart enough and honest enough. I personally don't like 360's, but I have 340's and 273's, nothing really wrong with a 360 just my preference. I don't like bench racing either. My 2 cents.