I assume that the tool is adequate for the job--but the sbc uses 3 different cam bearings so don't mix them up--the front one is by itself and 2 and 5 are alike as are 3 and 4

If you are concerned you can try a cam in it after putting in each bearing--that way you can tell where the problem is if the cam is tight or doesn't turn

use a big hammer---at least 3 lbs