Is it possible to change the oil pan gasket on a 502mpi with out removing the engine looks like theres plenty of room to drop the pan down?? Wasnt for sure if your able to get to all the bolts??

I personally wouldn't attempt that. what a nightmare

if you have that much room I would simply lift it out. I also can not imagine doing that in the boat, what a nightmare. May seem easy, and will most likely come down, but getting it back up with a good seal will be impossible IMO.

Drop the drive, take the echuast boots off, unhook the merc plug, two bolts on bellhousing to transom, two bolts on front engine mounts, stater wire and ground. Lift engine, leave hanging over boat, change gasket, drop engine back down and reverse. Can been done in 4 hrs

houdini would not attempt that one !!!!

Ok thanks guys I will be pulling the engine out to do this. Just wasnt quite sure thanks for the help once again the site proves to be the best.

Will i need a line up tool for the drive or anything or just like you say pull it out do the work and drop right back in hook everything up and ready to go??

You have to take the drive off. Then when you re-install the engine, you need to check the drive alignment with an alignment tool.