Internally Balanced 360 Cast Crank

Thanks for the data, and your sharing is very much appreciated. (My Excel sheet spits out the exact same bobweight...) That is about as light a batch of parts as I know to use.

Can the shop tell you how many grams of equivalent weight was added at each end with the Mallory, and at what distance from the crank centerline? That would be VERY useful to know.

The only other trick I know is to counterbore the front and rear throws, like in the 340 forged cranks, and see how far that gets you. Or notch the pan rails a bit and see how much extra can be welded on the outer edge of the counterweights.