We have lightened the block, cleaned it up, and done a thorough inspection. Where do we go next? "Basically, after you have the fundamentals done, you can talk about the bore itself," Jenckes says.

Just like a solid foundation is important for a sturdy house, a well-prepped engine block is critical for a motor make big power—and do it more than once. A professional engine builder offered to show ...

We have lightened the block, cleaned it up, and done a thorough inspection. Where do we go next? "Basically, after you have the fundamentals done, you can talk about the bore itself," Jenckes says.