I just got a 4.6L Cheap from a MarkVII. By cheap I mean $100 and it has compression. Upon teardown, everything looks great right down to the perfect cylinder walls. Here's the question: There seems to be nothing tieing the exhaust cam to its gear in the timing system. Sure, there is a spot for a key on both the cam and the gear, but neither side had anything in the keyway and the cam spins independently of its gear. Call me crazy, but I can't figure out what is supposed to operate the exhaust valves if that cam gear isn't connected to the cam, Right? What am I missing in this engine to make the cam turn with its gear? Maybe I have spent too much time with my small blocks. I just thought I would get with the times and start toying with the Modular motors. Let me know. Thanks.