About the Author

Harold Bettesis the award-winning co-author ofEngine Airflow HP1537- A Practical Guide to Airflow Theory, Parts Testing, Flow Bench Testing and Analyzing Data to Increase Performance for Any Street or Racing EngineandDyno Testing and Tuning. With the exception of the years during his military service, he has been involved in motorsports in one fashion or another for over 45 years. In 2005, he was the recipient of a Lifetime Achievement Award from the Advanced Engineering Technology Conference, for a lifetime of dedication to the high performance industry.