Reliability is where the <a href=”https://allamericanmotorshub.com/product/lq4-engine/”>lq4 engine</a> truly shines. Designed for heavy-duty GM trucks, it was engineered to endure long hours of operation under load. The cast-iron block resists cracking, while the forged crankshaft and quality internal components ensure long-term durability. Many LQ4 engines have been known to exceed 300,000 miles with regular maintenance. Unlike some high-performance engines, the LQ4 engine’s simplicity contributes to its reliability—no fragile components, no exotic materials, just solid engineering. This makes it ideal for enthusiasts who want a strong base for turbo builds, towing setups, or street performance vehicles. Even with forced induction, the LQ4 engine can handle substantial power with only minimal upgrades like stronger connecting rods or ARP head studs.