How to remove the engine from a motorhome.
I'm a retired mechanic and I use to own my own business.
Before that I also worked for an engine R & R business.
It all depneds on the model of RV one has.
But it sure sounds like yours would come out the front and the core support or radiator support should have bolts on each side to removed it.
IF it does than your RV was designed to remove the engine out the front.
IF you really plan to to this and you are doing it yourself - which will save you lots of money$$$$$ and you plan on using it for a long time - you might want to look into an aftermarket FI setup. (It is a stand alone set up)
It will give you much more bottom end, torque, and better gas mileage.
Best of luck with your project.
EDIT - one key point I forgot to mention.
When using an engine hoist on vans you need to:
Remove the chain and hook that comes with most engine hoist.
Cut a slot just below the mounting bolt for the chain/hook.
Find a nice size hook with an eye loop on top that the bolt will slide through. Mount the hook so that just enough of the hook is exposed to where you can slide a chain or carb plate into - keeping it as clsoe as possible to the hoist arm.
Mount a single hook this way will place your hanging point, of the engine, as high as possible to help fit the hoist under the low engine comparement found on most front engine RVs and make it much easier to pull the engine out the front. (Hope that helps)