67Monaco
Go Woke, Go Broke.
Ok, so what parts in a 440 are plastic besides timing gears? I ask because I found half a circle part in my oil pan. Looks like a guide but I can't find anything in the service manual that would point to it.
Probably valve seal that turned solid. It gets so hard you can shatter it with a hammer. Otherwise there's not much for plastic in the crankcase itself aside from those parts.