YardstickThere is an old adage that you don't race dynos and flow benches. Manufacturers of test equipment use different standards and test procedures that will affect the results. This brings me to ...

Starting engine dynamometer pulls at low rpm is hard on the dyno and hard on the engine. Today, engine dynamometer testing is an integral part of many HOT ROD engine buildups and product tests.

This Chevy 406 small-block V8 engine has its iron engine block replaced with an aluminum one from GM Performance Parts, and then it is tuned on an engine dyno - Super Chevy Magazine ...