No. The engine block is last in line. Look at the diagram below. It is from a Xantrex Link 10 manual but shunt wiring is the same for all monitors. The battery shown is the house battery. The wire goes from the negative post to the battery side of the shunt. As Maine posted the shunt has to be the first connection after the battery with no other wires going to the negative side of the battery. The other side of the shunt, the load side in the diagram, goes from the shunt to a negative bus. The negative of the start battery also goes to the bus. The bus is connected to a single point on the engine block. All other negative connections go to the bus which is connected to the engine (earth).
Living aboard in Victoria Harbour