Today we’re taking you inside the dyno room to see how some work class dyno tuning happens. Roush Yates has been building bad ass race motors for a long time and their stuff competes at the highest levels of NASCAR competition, endurance road racing, and they’re making tracks into the drag racing landscape as well. All of those different disciplines of racing require engines built differently in order to thrive in those different conditions. This video highlights a Roush Yates road racing engine that was destined to run in a Daytona Prototype for 24 hours on the road course and high banks of the famed speedway. The engine is being run on an AVL dyno which is cycling the engine in the exact same way it would be run around the Daytona course. What you will see and hear is the engine “making” one lap of the Daytona course.

Back in the day, the most advanced testing available was to take the race engine, put it on the dyno, wing it up to 8,000 or 8,500 and hold it there for as long as a typical race would last. This is obviously light years more advanced as the loads placed on the engine are varied and it is “upshifted” and “downshifted” through the rev range as it will be during the race.  This mill has the sound of a NACAR engine so we’re going to guess it is an OHV V8 that measures out to somewhere in the 350-400ci range, give or take. This is two minutes of pure mechanical joy.

PRESS PLAY BELOW TO WATCH A ROUSH YATES ENGINE RUN THROUGH A SIMULATED LAP ON THE DAYTONA ROAD COURSE – THIS RULES!