Guys and Gals, I would like to start a thread that talks about some modifications that can be done to increase the life expectancy of our engines. Please give any and all ideas..... The most important areas of concern for me are the rod and main bearings and how we feed oil to those areas. Some of this information has been covered in other threads but maybe more can be added. Lets start with the engine block itself. Stopping the main caps from moving around is the first and most important part of building our engines. As you can see in the picture I have used chrome moly tubing to pin my main caps to the block. As the crank forces the center of the caps downward they have a tendency to pinch inward at the parting line. This can reduce the amount of oil moving through the main bearings and into the rods. The cost of this modification is maybe $150. I would do this on any engine that is going to be line honed. That is with or without an engine girdle.