The Spintron was developed by Bob Fox at Trend Performance in the ‘90s to improve pushrods for race teams. Engine speeds were increasing dramatically in those days, especially in NASCAR and Pro Stock, and Fox needed a deeper insight into the how, why, and when of pushrod failure. Working with Randy Dorton of Hendrick Motorsports,
Engine building is all about attending to the details. The professionals know that all is not as it seems when it comes to something as simple as valve lift. We had an opportunity to discuss this with Ben Strader, president of EFI University, where he and his staff not only teach engine building and EFI tuning, but also apply what they learn on the dyno.