MH 440 is a good one and would only need a pick up/pan swap and car exhaust manifolds/headers

same for the 413 if it is not a HD/truck 413

the 400 would be a drop in if it is in a car now as far as oil pan goes.

would need correct brackets pullys for it and the B engine dist which is shorter than a 413/4440 RB engine.

deff ez to R&R it from a car rather than a MH for sure hands down.

the 400 is sounding to be ez-est/cheapest swap to a BB engine though as it is already in a car.

brackets/pullys should not be hard to scratch up either.

I didn't mention I have another 318 poly and 727 sitting in my shop. I am ignorant to machine work and performance motor building. Would the wide block 318 poly bored .90 be similar to a big block? What is the cost of something like this? It would allow me to tear down the donor, have it built, and drop it in with no new tranny, changing pans, radiator, etc.

You need to find someone in your area that knows Mopars and understands your financial situation to not get you in over your head.

The motorhome engine only a good base if you are going to do a lot of mods and changes (read Money spending) if you are looking to do a performance upgrade with out a lot of money spent you need to do a simple swap with a complete car that has the engine combo (combo means 95% of all the pieces to make it work)

look for a rusty beat to crap car that has a drivetrain to use. If you look for them they are all over.

It seems like the C-body cars, such as the 66 Fury, require a C body oil pan. I think these pans have a notch in the side of the pan to clear the steering linkage. Big block C-body pans are fairly common.

Post some pics of the MH 413. Also tell us the budget and what you are trying to accomplish.

For reference, when people talk about the industrial 413 this is what they have in mind:



Notice the water pump is really high on the engine? The water pump itself is a larger diameter than a passenger car pump and the housing has bosses that flow water directly into the heads.

That might help the OP understand what to look for.

I see that you're in Missouri, what part of Missouri?

Im just north of Nevada MO. As far as budget, i really havent set a limit, but i dont want to get crazy. If i can find a matched bb and 727 id like to give under 700. That would leave me some room for perf parts. I have a 400 found but no tranny for 400 but he needs to keep the pullys and distrib. I have a 383 with 727 found from a 67 newport but dont have answer on price yet.

I vote for the 383 out of the NewPort!
Here is my '67 Satellite I just pulled out the small block and installed the 383 727 out of a '68 NewPort my self last month.

http://youtu.be/QCsGMXIsXqM

Looks like it did the trick. Is it stock?

Has an aluminum intake and a untuned Edelbrock carb. other than that, Yes it is stock

the swap was eazy peazy. used the radiator and and a few other items. if you wait to find the right car you can get power disk brakes for your 66 as well.

Im hoping this one works out. I understand there are also different tail shafts on the trannys.