Which engine receives the most punishment?
600 HP drag race engine shifting at 8,000 rpms. Assuming five 1/4 mile passes a day.
or
600 HP road race race engine shifting at 6,000 rpms? Assuming four 30 minuite road race sessions per day.
or
600 HP street cruiser running at 2,500 rpms for 8 hrs.
Any ideas, opinions?
