build it to last big block guys

Put it together clean.

More engines are destroyed by dirt and foreign particles in the engine that you can possibly imagine.

Many builders have an engine assembly room that is sealed and pressurised by filtered air that constantly pushes outside air away from the assembly room through any small openings. My assembly room is the master bedroom turned into the clean room (yes, I live alone). Every corner of the room is dusted, vacuumed and the floor is mopped prior to every engine being assembled. During engine assembly I never open the outside door and only enter the assembly room through the house to lessen the chance of outside dirt getting into the engine. You cannot spend too much time inspecting and cleaning every part that you put in the engine. Even with brand new rocker arm assemblies that appear to be clean from the manufacturer, I will disassemble and run a drill through every hole, chase every thread and hand deburr every piece. Then carefully wash each piece in a clean solvent tank, that has clean solvent for each engine, and then spray wash each piece with solvent that has never been used. Then air dry the part and bag it in brand new plastic ziplock bags until it is installed. I deburr the timing sprocket teeth by hand, take the timing chain, after cleaning and before assembly, soak it in break in oil for 2 hrs stirring it occasionally. EVERY piece of the engine gets this same quality of care.