Today, dollar for dollar, is the 318 faster than the 340 ???
2 years ago I answered a Facebook Marketplace advert. It was 10 engines and 4 trans, you-hual for free. Ended up with 1-4.3 GM, 1-307 GM, 1 busted 302 Dorf, 4 318's, 2-5.9 Mag's, and a 1972 MBB 400-4bbl. 3 trips in my Rampage.
The GM's and Ford went to a friend. He also took the 4 GM trans as a future core build for me.
I scrapped 2 of the 318 short blocks due to the plugs being out and were froze up.
Traded the 5.9's for some parts.
The 400 B was from a RoadRunner. dual snorkel air cleaner. It will become a 528 stroker some day.