NHRA Northwest Nationals Seattle at Pacific Raceways in Kent, WA 2019!
Top Fuel rookie Prock picked up his first professional win by going 3.875 sec at 307.86 mph in his Montana Brand/Rocky Mountain Twist dragster to beat defending world champ and points leader Steve Torrence in the finals. Prock beat Leah Pritchett, Clay Millican and Mike Salinas to reach his first career final round as well.
Torrence advanced to his 52nd final round by beating Steve Chrisman, Antron Brown and Shawn Reed. Prock was motivated to try and knock off Torrence, who has eight wins this season, in the finals after watching Force pick up his 150th win the pair before him.
“This is just unbelievable,” Prock said. “I have to thank John Force for giving me this opportunity. I’m still speechless. This is a dream come true. I’ve wanted this ever since I was knee-high. Ever since I could think, I wanted to drive a Top Fuel car. We said when John gets 150, I’m going to get my first one and it all came together perfectly. We put all the pieces of the puzzle together today. I wanted to race (Torrence) in the final round. I wanted to be the guy that stopped him.”
Top Fuel is a type of drag racing whose dragsters are the quickest accelerating racing cars in the world and the fastest sanctioned category of drag racing, with the fastest competitors reaching speeds of 338 miles per hour (544.0 km/h) and finishing the 1,000 foot (304.8 m) runs in 3.62 seconds. A top fuel dragster accelerates from a standstill to 100 mph (160.9 km/h) in as little as 0.8 seconds (less than one third the time required by a production Porsche 911 Turbo to reach 60 mph (96.6 km/h)) and can exceed 297 mph (478.0 km/h) in just 660 feet (201.2 m). This subjects the driver to an average acceleration of about 4.0 g0 (39 m/s2) over the duration of the race and with a peak of over 5.6 g0 (55 m/s2).
The engine used to power a Top Fuel drag racing car is based on a second generation Chrysler RB Hemi, but is built exclusively of specialized parts, it retains the basic configuration with two valves per cylinder activated by pushrods from a centrally-placed camshaft. The engine has hemispherical combustion chambers, a 58-degree in. to ex. valve stem angle; 4.8 inches (121.92 mm) bore pitch.
The supercharger must be a 14-71 type Roots blower. It has twisted lobes and is driven by a toothed belt. The supercharger is slightly offset to the rear to provide an even distribution of air. Absolute manifold pressure is usually 56-66 pounds per square inch (386-455 kPa), but up to 74 pounds per square inch (510 kPa) is possible. The manifold is fitted with a 200 pounds per square inch (1,379 kPa) burst plate. Air is fed to the compressor from throttle butterflies with a maximum area of 65 sq in (41,935 mm2). At maximum pressure, it takes approximately 1,000 horsepower (745.7 kW) to drive the supercharger.
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