Chevy/GM Cylinder Heads - Breathing On A Budget Photo Gallery
You'll need a set of stones to finish your porting and a dressing tool to shape the stones. Mondello shapes a large stone to smooth the big radii in the chamber. This helps maintain the proper combustion chamber shape while still smoothing the casting. All flat surfaces on the chamber get smoothed with a sanding disc. The final polish can be done with a flapper.