It has nothing to do with the 2 gears matching, it's only the cam gear balance we are talking about. The crank...if you are on your game... you will have the flywheel, flexplate, dampener and crank gear on...or all available with the rotating assembly when having it balanced. I do not believe any small block Mopar camshaft is specifically balanced per say...and that's probably due to the lobes being shorter than the journals along with the valve spring n lifters dampening it. I'm not the final say on that but it's got to make sense
