340 on dyno video, whats your opinion
As far as a stock 340 hp curve, there were two magazine tests done approximately 30 years apart and the results were very similar. Like the tests posted above, there are various unknowns that make it hard to be sure we're comparing apples to apples. Unlike the tests above, we know the 340s tested were built to stock specs and then modifications tested. Some of the gains from modifications done in the more recent article seemed suspiously large...take it for whatever you think its worth.
Mopar Muscle Feb 2001
Hot Rod Magazine August 1969 John Dianna "Mopar Manipulating, Part 1"