Ray,
Actually you and David are both right.
The term "blueprinting" comes from the factory drag racers in the late 60's
and early 70's. It refered to taking an engine and "re-manufacturing" it so
that ALL tolerances were eliminated. The engine was built to the original
factory specs, (ie. the "blueprint")
Nowdays, it generally refers to building an engine that has little or no
tolerance to spec. That spec may be the individual builder's instead of the
factory, but still be within the factory specifications and tolerances.
For example, an engine man may have, through experience, found that a
racing engine for his LBC meets his requirements with the rod at the long end
of the factory tolerance, but the piston height from the pin centerline at
the low end of the stock tolerance.
Basicly, it is nothing more than selective assembly. And given the slop ,
generally, in factory tolerances, it leaves a lot of room to play!
Rick Morrison
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