i would stagger the doses. take the lsd and then take the 2c-b like a half hour. depending on your doses, one could just completely overpower then other and then you have wasted a substance (so take evenly psychoactive doses). seriously though - www.erowid.org
oh please sir, i live on erowid. i would wager iv probably read almost everything on erowid at one point or another. i think they had 3 reports of lsd and 2cb combined one with mdpr or something and the other was a large dose (4 undescribed dosage unknown 2cb pills) and i think 6 hits of acid. so i didnt think it applied to me.
had a medium to weak acid cube two weeks ago followed by a 6mg approx line about 30 minutes later. i was surprised how strong it was. got very intense warping of both visuals and time. very hard to follow conversation. my tolerance to these is usually high but with these combined small doses it was quite good. didn't last too long though. but 2c-b is pretty short anyway.
crankheard - go to bluelight.ru if you have not yet. I am almost positive you will find detailed info on what you are looking for. if not, sorry I could not help.