If you've got some time before you use it, just send it over to Crower and they'll measure it and send you back a timing card with it. Don't know if they've changed policy, but they used to do it no-charge.
#1 piston TDC, roll cam so that you can rest a straight edge across #6 lifters, install chain (or gear set) SEND IT
Isky has a Cam Doctor that they will plot it out and give you the info. Just had them do an old Engle cam. Just around the corner from my shop