Dynamic Engine Balancing & Blueprinting
The Crank, Rods, Pistons, Wrist Pins & Rings are All Balanced and Brought within a Tenth of a Gram of each other.
Balancing helps an engine run smoother with less vibration which creates less havoc on the engine bearings and helps things last longer.
Blueprinting is an interesting term. Almost no engine is blueprinted. Blueprinting means following a set of specs to the "T". Most serious race engines such as Indy, NASCAR, Formula 1, etc. are blueprinted engines. Most teams have several back-up engines and every single one is identical to the other in every way. Blueprinting can also mean (loosely) building an engine by following a set of factory specs. The only problem with this is that there are given areas of tolerances, not just one specific number. For instance: A blueprinted set of engines will have EXACTLY the same crank clearances. They will have exactly the same amount of piston to cylinder wall clearances as well as ring gap clearances, cam timing, head port, and chamber volumes, and so on whereas a factor spec book will have "tolerances" that vary slightly. A blueprinted engine will call for .00275" main bearing clearance whereas the factory specs say anything from .0015 to .0030" is "within spec". There is no "within spec for blueprinted engines! It either is or it isn't and there's no in-between. If you blueprinted two engines by the factory specs, there will always be variances between the rod and main bearing clearances, piston clearances, deck height differences, valve spring pressure differences as well as Intake and exhaust port and chamber volume differences