Anybody running the '68 4 speed 340 cam?

I thought it was a duplicate of an original cam. Is it not? I don't care enough to go back to the old threads :) There is little to no lope to the cam and as discussed, manifold vacuum is on the low side. If I had to do it again I might go with something different but not the XE268 which seems to be notorious for noise.
The LSA is killing any overlap pulsing out of your tailpipes. The people that run Schneider Cams are some nice folks that have a solid history of producing effective Chrysler profiles. You may want to give them a ring an B.S. with them some time. One of the owners comes from Crowers Cams tree, I believe through marriage.

As you have stated, the cam preforms well off the bottom, and that is often a hitch with 2.02" valve'd 340 that's been "cam'd up" so you are ahead of the curve.

Thanks for sharing your results with us.