Balancing, expect heavy metal or not?

New Lunati 4.5 forged crank, Scat rods, Icon pistons. Would one assume that it will need weight? What combinations seem to need weight added to the crankshaft? I would assume a heavy bob-weight would need more weight added to the counterweights but I have missed the obvious before. About what point does one normally see the need for weight to be added?

That one may get away without Mallory

What is the wt. of the pistons/pins?

Piston 568 pin 141. Rod 810.

It should work w/o heavy metal. Sounds like a light bob wt. to me.

Please report back after u get the deal done.

This set-up balanced without weight. One hole in each front and rear weight. Rod was 568 and 236, piston with pin and rings=806.

Lunati 4.5 forged
Scat I beam 6.7
Icon 4.390 with a 39cc dish
King bearing's

I've never had to add metal in any Lunati crank. Can't say the same for other brands.

.