3769717 Casting no identifies it as a 59-62 261 block. 3836848 head no. The rod does clamp around the wrist pin so it moves inside the piston. When we removed pistons, 2 rods would not pivot, 1 would pivot with some force, 1 had the right tolerance, and 2 sounded like baby rattles when you shook them.
Was not an ongoing lubrication problem because after it was rebuilt, it ran fine and has been running for 1000 miles. The oil lines are plugged in intake side of engine and obviously the movable pin is in the right position.
Last edited by Woogeroo; 03/02/2015 1:00 AM.
