Naw, it is actually real easy.
Turn the cam until the dot on the gear would point straight down (like if the gear was on it). Just has to be close. Set both gears in the timing chain aligned dot to dot and start sliding on the crank gear. The cam gear will line up and pop straight on.
Did you see this post about timing gear alignment and turning it to #1 TDC,
http://67-72chevytrucks.com/vboard/s...d.php?t=695582