I can't see it getting past the bottleneck at the valve.From the impact marks on top of the piston I'm pretty sure it went in through the intake, or was left in when the head was put on.
Ok. Let's say it does.I bet a 10mm would fit right through the hole for the spark plug...
Maybe not with headers but I could see it happening with cast manifolds.Ok. Let's say it does.
A socket can't "fall" through a sparkplug hole...
Bob, more info please!!
Just a joke fellas. Part of the 10mm socket conspiracy