350 hp out of a fairly stock 340

If anyone thinks those true 1.5 or 1.6 roller rocker won't make a difference. Most stock non adjustable rockers are usually in the 1.42-1.43 actual range. Add in loss from the bad 59* angles... not exactly doing much to help.

Every little bit helps, especially when filling the cylinder.

Put a solid cam in a 340 with the duration of some of those chevy cams and they run just a little bit better. What was the 30/30 cam something like 230-235 @ .050 and 485 lift? I'd think that would wake up a SB mopar pretty well.