The 340 is the biggest POS V8 Chrysler ever made.

A small block Chivy will rap all day at 8000 rpm with solids and springs. back in the day, a tunnel rammed, geared small block Chevy 350 could catch you at the back door. Seen it many times at the strip.
same goes for a properly built 340, they could catch ya.
but not my 383. lol