More work on the 4200 today. cleaned up the rest of the block and head, and then pulled the oil pan and cam cover. NO SLUDGE. very clean inside. I got the outside of the cam cover clean enough to at least get started on the modifications I will do to it (add an alloy oil fill to the back, add a breather port, shave off 2 original ports, cut off unnecessary brackets, weld up the original oil fill hole and probably lower it a bit as it is very tall . To fit under a Z car hood it has to be chopped about an inch......although a small rectangular hole in the hood with the polished cover sticking up can be made to look really cool. Yeah I had an adaptor snap on me, the crank bolt is SO tight, I will probably need heat and PB blaster and smack it a few times to shock the treads to get it off. I need to clean behind it and it needs to be cleaned up and painted.......I wonder if the heat will ruin it? Before I called it a day, my AR5 transmission arrived.....in need of a rebuild, the pilot shaft has wiggle room. pics follow: