In the world of rear-wheel drive, the differential is the unsung hero, orchestrating a dance of torque and traction. Picture this: a muscle car’s rearend is like a DJ, spinning the pinion gear to a groovy 4:1 final drive ratio beat. But don’t let it slip! Enter the limited slip differential (LSD), which ensures both wheels are jiving equally, even on icy dance floors. It’s all about that power to the rear wheels, keeping your ride smooth and your tires out of a spin.