The GM-based small block has been a staple of the sport for decades, with engine builders like Kistler, Gaerte, and Donovan supplying their own iterations of the worked-over motor to teams across the country. The long-standing power plant of choice for sprint car racing is an all-aluminum 410-cubic-inch pushrod V8. And when you’ve got nearly a thousand naturally aspirated ponies on tap, engine reliability is an ongoing concern. The 1,400-pound tube chassis race cars employ a wholly unique blend of suspension tuning and aerodynamic aids, and since it’s a direct-drive powertrain, striking the right balance between horsepower and gearing is absolutely crucial. With some classes boasting power-to-weight-ratios that would make a Formula One driver jealous, top-tier sprint car racing is one of the most demanding forms of motorsports around. With a fresh approach that focuses on performance, durability, and low weight, these new mills could soon be setting the pace for open wheel fields. Ford Performance and Toyota Racing Development are both putting the finishing touches on their purpose-built 410-cubic-inch sprint car engines.
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