5 Best Spark Plugs for Chevy 454 [Expert-Tested Picks for 2026]
A Chevy 454 engine demands spark plugs that can handle strong combustion, high temperatures, and heavy workloads. The right set improves ignition, supports smoother acceleration, and helps the engine maintain steady power under towing, hauling, or everyday driving. Poor-quality plugs often lead to rough idling, weak throttle response, and lower fuel efficiency, making the upgrade … Read more