By the time you’re reading this, Jimmy Taylor and his team will already be on their third day of record-chasing at Royce Miller’s Maryland International Raceway in LaPlata, Maryland – a track that will host an NHRA national event for the first time in 2026. Their plan for the morning is clear: roll to the starting line at 9 a.m. EST, aim for a 3.43 eighth-mile pass, and, if the car holds, run it out the back in pursuit of drag racing’s ultimate milestone – the first 4-second quarter-mile doorslammer run in history.
On Tuesday, Taylor stunned the sport with a 3.461-second, 232 mph blast in the eighth-mile. According to drag racing historian and statistician Bret Kepner, that equates to a projected 5.17 seconds at 279 mph over the quarter. “Probably around a 3.38,” Kepner told me, when asked what it would take to crack 4.999. “The 1000 on the 5.14 showed a probable 5.09 and that was still off the throttle.” The 5.14 he’s referencing, of course, is “Turbo” Todd Moyer’s DI Top 8-leading quarter-mile record, set in January of 2024. But as much as the math fascinates, it feels like we’re in uncharted waters here. The equations can only take us so far.
That’s because what Taylor is doing pushes physics to their breaking point. His twin-turbo Pro Mod is accelerating from zero to 232 mph in less than 3.5 seconds, covering the length of more than four football fields in the time it takes to say his name out loud. To put that in perspective: picture a 410 sprint car – 900 horsepower in a 1,425-pound frame, one of the most violent machines in all of motorsports. Its power-to-weight ratio is about 0.63 hp per pound, enough to go 0-60 in 2.5 seconds and top 150 mph on dirt. Now meet Jimmy Taylor’s Pro Mod: nearly 7,000 horsepower in a full-bodied doorslammer, delivering 2.92 hp per pound – almost five times that of a sprint car.
The time slips tell the story, too. On a 3.477 at 229 mph pass, the car posted a back split of just 1.08 seconds (the time from the 330-foot cone to the eighth-mile, a key measure of how hard the car charges through the middle). While we don’t yet have the slip for his 3.461 at 232 mph, the trend suggests there’s even more in it. And that’s before we talk about what could happen on the back half (eighth-mile to quarter-mile), where Taylor’s car will undoubtedly run out like a freight train.
The Drag Illustrated Top 8 record book makes clear just how significant these runs are. It’s not just that Taylor is knocking on the door – it’s that he’s doing it at a time when the standard-bearers have names like Moyer, Gonzalez, Scruggs, Ricca, Micke and Dillard. Most importantly, it’s “Turbo” Todd who holds both the eighth- and quarter-mile DI Top 8 records right now, a massively impressive double crown that stands as the benchmark for the sport. To leapfrog into that company means Taylor isn’t just another entry on the list. He’d be making history.
It’s also worth putting this attempt in context. Moyer’s 5.14 and many of the other titanic performances in the DI Top 8 came in the winter months, when atmospheric conditions were at their absolute best – dense, cold air in the heart of record-setting season. Taylor is swinging much earlier in the year. At Maryland International Raceway this week, the air hasn’t been bad, with density altitudes early in the week at some 600-800 feet, but creeping north of 1,800 feet on Tuesday.
Make no mistake: Jimmy Taylor isn’t just chasing numbers. He’s chasing immortality. To get there, his team will have to summon the combination of power and power management, traction, and conditions required to do what nobody else has done. The 4-second barrier for a doorslammer is uncharted territory, but it’s also most certainly the final frontier. And once it falls, the only mountain left will be 300 mph in the quarter-mile – a target Taylor and tuner Carl Stevens Jr. already have in their sights.
Whether it happens this morning, next week, or six months from now, the point is clear: the chase for 4.999 is alive, and it’s happening right now. For all the math and physics involved, it still comes down to a racer, a car, and one clean, perfect run. And if Jimmy Taylor is right, today may be the day drag racing history changes forever.
This story was originally published on September 24, 2025.
The post Jimmy Taylor’s Chase for 4.999: The Final Frontier of Doorslammer Drag Racing first appeared on Drag Illustrated.
