No secrets are spilled, and the engine is from the previous generation of race cars, but the “How It’s Made” series went inside RoushYates racing to follow the build of a NASCAR engine. It’s still entertaining and somewhat enlightening if you’re new to competition engine building.

The two-part posting on YouTube starts with the design and development phase where plastic prototypes are test fitted and analyzed. Then machine work starts on block followed by the traditional assembly process. The narration sometimes appears mismatched with the video sequence — such as the piston installation — but overall the assembly is a quick, glossy portrayal of a NASCAR engine shop. Missing, of course, are the hundreds of detail-oriented steps that micro-measure every component and double-check all the fitments. And the never-ending demands placed on the R&D section are hardly represented with the appropriate force. The intensity to find 10 or 12 more horsepower a season is incredible on the Cup level.

However, this is mainstream television, so take it for what’s it’s intended. Enjoy!