At the heart of the L87 engine lies a carefully engineered small-block architecture that blends tradition with modern refinement. The aluminum construction reduces mass while maintaining structural integrity, and the forged steel crankshaft enhances long-term durability. A pushrod valvetrain keeps the engine compact, allowing efficient packaging in large vehicle platforms. Direct injection optimizes combustion by delivering precise fuel control, improving both performance and thermal efficiency. These engineering decisions reflect General Motors’ focus on reliability and practicality, ensuring the L87 engine remains resilient under sustained workloads and demanding operating environments.