Value of unknown 400 engine.

MOPAROFFICIAL said
When it comes to old v8 long blocks it's about a 1-2 dollars per cid or so. Depending on what ya got.

Crank costs x 75-100?
Block costs x 200+?
Head cost x 80-100?
Rods cost x 50-100?

It adds up.

I'll go along with that, plus it's also a regional thing as well. Stuff here is pretty cheap, whereas another location maybe not so much.