At Sick Week 2025, the adrenaline was high as Nick Larson from Streetcar Shenanigans Performance pushed the boundaries of a small block Ford engine. This ProCharged 427 cid powerhouse was meticulously crafted for a stick shift Mustang, designed to dominate drag-and-drive events with its exceptional power and unwavering reliability.
When their customer, Bob Gruber, sought a more competitive edge in drag-and-drive racing, Larson knew it was time for an upgrade. The original setup with a 363 cid block had its victories but showed signs of wear and tear. To meet the demands of the track, Larson made a strategic move to a Dart Iron Eagle block and Higgins canted-valve heads, optimizing both airflow and efficiency.
The transition from the 363 to the 427 was more than just a numerical shift. The new setup boasted remarkable efficiency, generating a significant increase in wheel horsepower. With over 1,700 horsepower at the flywheel, this small block Ford engine proved its mettle on the toughest drag-and-drive circuits, enduring long distances and high-speed races.
In crafting the 427, Larson aimed for durability without breaking the bank. Opting for a billet Molnar crankshaft, H-beam rods, and Diamond-coated pistons, the engine was built to withstand intense pressure. The valvetrain received a significant upgrade, ensuring reliability with T&D shaft-mount rockers, a refined cam profile, and PAC springs.
The heart of the engine, the ProCharger F-1X unit, operated at maximum efficiency, delivering well above its rated horsepower. Larson’s innovative solutions, including a custom front dress setup to handle cog-belt tension, showcased his commitment to both power and practicality.
Amidst the impressive numbers, Larson’s primary focus remained on endurance. The goal was not just to start strong but to finish the week without a hitch. Achieving consistent ETs and maintaining reliability throughout the event was the true measure of success for Larson and his team.
Streetcar Shenanigans Performance, led by Larson and his cousin, is dedicated to transforming regular cars into high-performance machines. Their success with the 427 cid ProCharged small block Ford engine exemplifies their expertise in custom fabrication, tuning, and engine builds, positioning them as leaders in the Ford performance realm.
As the drag racing scene continues to evolve, the story of Streetcar Shenanigans’ small block Ford engine serves as a testament to the blend of power, precision, and perseverance required to excel in the competitive world of drag-and-drive racing.
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