Reply to "Flywheel?"

To answer the OP, the 351-C has a 164-tooth flywheel gear, and the flywheel & damper are factory-balanced at 28.2 inch-ounces of offset. It you have a neutral-balanced engine, that means there is NO offset weight on either flywheel or damper and thus ANY neutral-balanced flywheel 'should' work (note-'should'). Most such flywheels have removeable weights for this purpose. But the neutral- balancing choice is most often done for full-bore race engines run at high rpms and which are balanced at maybe 10X the precision of street engines. Some are set up at 50% of certain weights while others may be set to 52%: so-called 'overbalanced'. This may be the engine builders choice depending on what he likes. So your advisor simply wants to make sure that your 'neutral-balanced' flywheel really IS neutral! Engine balancing is one of the last of the black arts in engine building.