What is the difference between a flat-plane crank and a V8 engine?

A V8 engine is an internal combustion engine with eight cylinders arranged in a "V" configuration.

It is a common arrangement for high-performance automobiles

 and sports cars because it delivers an optimal mix of power and operation.

A flat-plane crankshaft is a particular kind of crankshaft utilised in some high-performance engines, notably certain V8 engines.

In contrast to a conventional cross-plane crankshaft, the throws on a flat-plane crankshaft are 180 degrees apart,

resulting in more uniform firing intervals between cylinders.

This design may result in a more forceful engine sound, enhanced engine balance, and less vibration.