Thanks Andy. I have used the .528 in a 360 and boy was it mild (15"hg vacuum)! I was wanting more lope (sound) than the .528 but I like the wider LSA. The lash adjustments are no big deal, so a hydraulic roller was just a thought. I saw where you ran that cam (XHR292) in a 505" motor with 2 x 4's and said it was pretty tame and vacuum friendly, but 3.23s are asking alot I realize. I may try something bigger than the .528 and go to 3.55s if the converter doesn't lock (couple efficiently) at 65mph or so. If I were going 3.91 or 4.10s I could put flat-tops and a race roller in there, durability and vacuum be damned. LOL