how much is blueprinting and what do they do exactly?

 

Stress relieve the internal parts, measure everything out to the thousandth of an inch and put it back together to the thousandth of an inch. The pistons go up and down perfectly (hopefully) in the perfectly straight cylinder walls, etc. etc. etc.

I think by the description you can imagine that this is not the price of a bolt on mod. I am sure it is much more expensive for a Z than a small block Chevy motor...

 

I never do any break in in any of my cars and always run very strong!!!