The 340 is the biggest POS V8 Chrysler ever made.

The part of the Chevys I like is the interchangeability. Also as Tim mentions, they are small and compact. You don't have to spend a thousand damn dollars on headers, or 300 for a decent oil pan. You actually HAVE aftermarket support.......so much so that it really turns my stomach when I compare to what Mopar has.

From 1955 to 1987 the bare block was virtually unchanged except for bore and stroke. That's a LOT of years and a LOT of parts to scour for.