Complex sentence: Repco's 620 series engine is a normally aspirated unit in a V8 configuration and uses American engine blocks obtained from Oldsmobile's aluminium alloy 215 engine.
Split into simpler sentences: Repco's 620 series engine is a normally aspirated unit with eight cylinders in a' V'configuration. It uses American engine blocks obtained from Oldsmobile's aluminium alloy 215 engine.