Mark Cronquist, Joe Gibbs Racing's head engine builder, and Lake Speed Jr. join Joe Castello on Hidden Horsepower. Mark talks about the design of the JD-1 engine, named after J.D. Gibbs, the drive to stay at the top in NASCAR, experiments that didn't work, oil analysis, and the evolution of racing engine technology. Mark even tells a story about when Jason Line worked at Joe Gibbs Racing.

Lake Speed Jr. joins Keith Jones and Joe Castello as co-host of Hidden Horsepower. Lake discusses his father's battle against Ayrton Senna in the 1978 World Karting Championship and win at Darlington in the Cup Series, and his own stories about finding horsepower at Joe Gibbs Racing during the halcyon days in NASCAR country. Lake and Keith discuss the science of Tribology, and ring seal.

Jon Kaase, 9X Engine Master, from Jon Kaase Racing Engines joins Hidden Horsepower to discuss his career from Mountain Motor Pro Stock to Off-shore Power boats. Jon details his successes along the way and offers advice to the next generation of machinists.

Keith Dorton from Automotive Specialists Racing Engines in Concord, NC stops by Hidden Horsepower to reveal a few secrets from his illustrious career. Total Seal's Keith Jones and host Joe Castello try to keep up with Keith as he discusses many of his experiments within engine building. This is an instant classic.

Don Ott, of Don Ott Racing Engines, talks Sprint Car engines with Keith Jones from Total Seal and host, Joe Castello. Ott discusses his early interest in racing engines, the challenges of building engines for Sprint Cars, and being open minded enough to try new technology in order to get ahead on the track.

Keith Jones, Director of Technical Sales for Total Seal, answers frequently asked questions about piston rings, cylinder blocks, and how to break in new engines, with host, Joe Castello. This episode will answer many questions for engine builders and people with high performance projects.

Ben Strader from EFI University joins Total Seal's Keith Jones and host Joe Castello to go in depth about his "Project Spinal Tap", 11,000 RPM LS engine experiment. Strader and Jones discuss the challenges presented by extreme RPM and offer suggestions to engine builders who do not have dedicated Research and Development programs.

Steve Jackson, NHRA Pro Mod World Champion, joins Total Seal's Matt Hartford and host Joe Castello for a discussion about his championship season and road to becoming a champion. Jackson discusses critical moments and knowledge gained over his career. "Stevie Fast" then turns the tables on Matt Hartford, who finished Top 5 in NHRA Pro Stock, and makes a bold prediction for his first race of the season.

Pat Musi, acclaimed nitrous oxide and fuel injection pioneer, discusses important factors for building high performance racing engines. Musi join Total Seal's Keith Jones and host, Joe Castello for a conversation about "what matters most" when in the highly competitive world of Pro Modified Racing. Musi also goes into detail about the success of his daughter Lizzy on the Discovery Network Show, No Prep Kings.

Jason Line, 3 time NHRA Pro Stock World Champion, joins Total Seal's Keith Jones and host Joe Castello for a deep dive into the importance of piston rings for achieving maximum horsepower in Naturally Aspirated engines from Stock Eliminator to Pro Stock. Line gives advice to the next generation of engine builders.