[FMG_V6_btb]

Some physics of angular (rotational) movement dynamics:

A = T / I

A = angular acceleration
T = torque
I = Inertia

For a given torque, the lower the inertia (of the rotating masses) the higher the angular acceleration (and the car acceleration).

So, any modification trying to take weight from that components is wellcome:

Pistons (are attached to the rotating masses), piston pin, rods, crankshaft, pulleys, flywheel, gearbox pinions, drive shafts, brake discs, rims, and wheels

Regarding rods, somebody knows a titanium rod manufacturer for Alfa engines? (especially for the V6)

Here a crankshaft designed by me 10 years ago: