Steeda's Naturally Aspirated S650 Mustang Achieves Sub-10-Second Quarter-Mile
Cars

Steeda's Naturally Aspirated S650 Mustang Achieves Sub-10-Second Quarter-Mile

authorBy Simona De Silvestro
DateFeb 14, 2026
Read Time2 min

Steeda's Silver Bullet 2.0 S650 Mustang GT recently set a new benchmark for naturally aspirated performance, clocking an impressive 9.96-second quarter-mile at 137 mph using readily available E85 fuel. This groundbreaking achievement at South Georgia Motorsports Park establishes the vehicle as the quickest naturally aspirated 2024 Mustang GT to break into the sub-10-second zone. The success stems from a meticulous approach to engineering, focusing on optimizing existing components rather than resorting to forced induction. This feat not only validates the inherent potential of Ford's Gen 4 Coyote engine but also underscores Steeda's enduring legacy in enhancing Mustang performance through innovative and practical modifications.

Steeda's S650 Mustang Dominates the Drag Strip with Natural Aspirated Power

On a memorable day at South Georgia Motorsports Park, Steeda's Silver Bullet 2.0 S650 Mustang GT shattered expectations by running a 9.96-second quarter-mile at an astonishing 137 mph. This remarkable performance, fueled by pump E85, was further solidified by a subsequent 9.98-second pass, confirming its consistent speed. This triumph was the culmination of extensive engineering efforts following initial track setbacks, which included addressing a cracked throttle-body housing, a leaking brake caliper, and a steering rack issue. The Steeda team meticulously overhauled several systems, upgrading to aerospace front brakes, repairing throttle bodies with Soler Performance parts, and integrating adjustable motor mounts to resolve clearance problems with an Anderson Composites carbon-fiber hood. What makes this achievement particularly noteworthy is that the car retains its original factory-sealed Gen 4 5.0-liter Coyote engine and 10-speed automatic transmission. Instead of relying on superchargers or turbochargers, Steeda focused on refining airflow, upgrading camshafts, fine-tuning the converter, reducing overall weight, and optimizing the chassis setup. This strategic approach has positioned the Silver Bullet 2.0 as the fastest naturally aspirated 2024 Mustang GT on pump fuel to date.

This accomplishment by Steeda serves as a powerful reminder that raw power isn't the sole determinant of performance. It highlights the profound impact of precise engineering, meticulous tuning, and a deep understanding of vehicle dynamics. For automotive enthusiasts who value the purity of naturally aspirated engines, Steeda's Silver Bullet 2.0 demonstrates that significant performance gains are still attainable without resorting to more aggressive power adders. This success not only cements Steeda's reputation as a leader in Mustang performance but also inspires a renewed appreciation for the art of extracting maximum potential from conventional powertrains. It's a testament to the fact that innovation and dedication can push the boundaries of what's possible, even within established performance frameworks.

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