Everything I know about differentials I learned from My Cousin Vinny
Mona Lisa Vito: It's a limited slip differential which distributes power equally to both the right and left tires. The '64 Skylark had a regular differential, which, anyone who's been stuck in the mud in Alabama knows, you step on the gas, one tire spins, the other tire does nothing.
That and laughing at the FWD crowd when they try to do a burnout at the drags and only one wheel spins. HAHAHAHAHAHA! What's the point guys!