Have you seen any info on the old mikuni cams?  I bought mine nos off ebay years ago and have never come across any solid specs, don't even remember it coming in a box    This is what an old member found once:

I did a quick google on mikuni toyota cam, and came up with a lift of I think .430 and a duration of around 280*...the problem is that desktop dyno requires intake and exhaust valve opening and closing degrees..

IVO 2.0*BTDC IVC 32.0*ATDC
EVO 44.0* BBDC  EVC 0.0* ATDC