NASCAR Cup engines live in a strange space: they are tightly regulated, largely hand built, and expected to survive hours at full throttle while still making headline power. The rulebook caps ...

While Hendrick Motorsports didn't ultimately land a 15th NASCAR Cup Series championship in the organization's 40th anniversary season, the team isn't quite done celebrating it's ruby anniversary. This ...

It was a little more than a year ago that Elton Sawyer put a wet blanket on NASCAR horsepower increases in the Cup Series. However, things have started to change. The main argument from the Senior ...

From Street Stock to Winston Cup, the three most important areas for engine performance improvements are cylinder heads, valvetrains, and intake manifolds. In particular, cylinder heads affect most ...