440 steel crank upgrade

Do you need a forged crank? Stock Cast cranks can handle quite a bit.
Well I was more going for internally balanced bs external. Also, if I’m going to spend money on balancing and turning then it might as well be a forged crank.

Depends on how much you can get a forged one for and machine costs and what you're doing. I paid 75 bucks for my forged crank, plus 350 to have it turned .010 and rebalanced with new rods and forged pistons.
This is sort of what I was looking for I guess. $400-$500 roughly. I would spend $75 extra to get a forged crank assuming the cost for machine work is the same for cast.