Piston and rod bearings installation

On some pistons, yes. If they need to be "oriented", look on the top of the piston for a notch. That goes toward the front of the engine.

Now for the connecting rods. You install the rods so the squirt holes point to the center of the engine and the anchor slots are on the outside. Always match the anchor slots up with the rod and caps.

Same with the main bearings, the anchor slots in the block and the caps must butt together on the same side.

Also, before installing your pistons, make sure that all of the rings spin freely in the ring grooves of the piston. Then right before you install them, make sure that the top and middle ring end gaps are at least 90° apart from each other. Same with the thin rings on the oil ring, make sure that the ring end gaps are at least 90° apart from each other.