NHRA - National Hot Rod Association

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How superchargers can take your race car to the next level

Evan J. Smith takes you behind the history of supercharging in drag racing and how you can best apply it to your vehicle.
12 May 2019
Evan J. Smith, National Dragster Contributor
Racing Technology
Blower Driver Services
Supercharging has long been a favorite of drag racers who recognize that Mother Nature alone cannot supply ample airflow to the cylinders. You’ll find superchargers in a variety of classes within NHRA, and of course, today, they are regularly used…
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How to pick valve springs for your race car

Valve springs are the unsung heroes of horsepower. Evan Smith dives into the basics of the parts that control the valve train in the latest Racing Technology column.
10 May 2019
Evan J. Smith, National Dragster Contributor
Racing Technology
Valve Springs
It could be said that valve springs are the unsung heroes of horsepower. Tasked with a critical job of controlling the valve train, valve springs operate in a harsh environment. They are rapidly cycled while being subject to great force, friction,…
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