On a 340 in Hot Rod magazine's Mopar Manipulatin' part II https://www.forabodiesonly.com/mopa...ulatin’-hrm-august-‘69.496107/post-1973532198Looks to me like in that testthe torque peak is 6750, and was equal in power to the LD340 at 6000 rpm.
But not so strong below and above that rpm on the 340 with cam etc.
Maybe the change in intake should have been tested with different jets, but that was, maybe steill is, typical of magazine tests