Same with the 400 sbc. Chevy guys like the 350, LOVE the 383 variant, and ignore the 400. Probably cause there was never a high performance version, just like 318, 400, mopars.
400 sbc can run hard with good parts, they don't even need to be great parts. Step one: pistons with some compression. Step two:decent heads. Step three, a decent cam. Step four: hang on tight.
The SAME formula works for 318s and 400s.
Potential of these and the Ford 400 is devalued, cause there was never a high performance version. It's a poor viewpoint.