Have you never heard the motto in the fuel pits??? I may not get it exactly as they say it, but this is close. Measure it with a yard stick, cut it with an axe. There isn’t much precision in a fuel engine. Clearances are humongous. Pro Stock is a different horse altogether. You don’t see them slapping new bearings or pistons in at the track. They have much closer clearances and tolerances than a fuel engine does. They run water thin oil where a fuel burner uses a 70 grade oil that when up to temperature is more like fudge than oil. Two different beasts for sure.
