1972 413 Engine Complete

I see the timing tab is on the pass side where I have seen all steel cranks.


Look here and see what the differences are in balancers. http://www.440source.com/dampers.htm


I think this is your balancer.
Damper - HD Truck 361/413
http://store.440source.com/Damper-HD-Truck-361_413-Used/productinfo/100-1049/