not enough converter? that 284/484 like atleast 3000 stahl if i remember correctly. had that cam in a 340 and it had to idle at like 1300 to make it idle in gear. had a small converter like your in it.
Crane cams is who he got the cam from recomened the tci 2500 stall converter . We tried run the idle up to 1200 rpm and does the same thing when droped in gear .