Yes, if the blade is cut equally next to the point where it connects with the other blade it will be in balacne good enough for normal driving....or the blade can be removed completely and engine will do fine except for extended times of idling....plus the engine will be much more quite at road speed.Give it a try...
I do have a used passenger car blade.It was from my '34 car.I replaced it with a new one 35 years ago when they were readily available for low cost.The car blade is 1/2 inch shorter and much more quite than the truck blade.A 1/2 ton truck should get along with it well.Let me know if your intrested.
Its very common for pre 1937 blades to break.Your lucky that it didn't do any damage.......or take your head
off.New ones have also become scarce.