I had to go digging thru the garage to see if I had some parts for a forum member. I pulled out a 4.0 block that I will eventually using for a stroker build. There is no oil passage in the block that lubes the Synchronizer. there is also a guide in the block right above the oil pump for the synchronizer shaft to pass thru.
The way I see it is either there is an issue with the cam, the drive gear or perhaps the synchronizer itself. By looking at the cam and cam bearing location, there is nothing supporting the cam itself by the gear. There is quite a distance between the #2 and #3 cam bearing (outlined in red) So perhaps when the first synchronizer seized and the customer tried restarting it, maybe it bound up and bent the cam?
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