We asked experts Mike Kuhl and Gene Adams to show us how to build a Small-Block Chevy to live with some serious street horsepressure Mike Kuhl (right) and Gene Adams know how to build blower motors.

Tilt out the bottom grille and shine a light inside the unit. Then, snap a digital photo of the blower assembly. Locate the nameplate on the bottom of the air intake and write down your fireplace’s ...