This naturally aspirated 4.6L engine, distinguished by the L37 option and the 8th VIN digit '9,' is designed for smooth and powerful operation, making it a great used engine. The electronic fuel injection system ensures efficient fuel delivery, supporting consistent performance. Its V8 configuration provides reliable power, while the SOHC system with enhanced valve timing maximizes durability and efficiency. This used engine is an excellent choice for those requiring a balance of power and reliability.