Whats the difference between a 413 out of a motorhome and the 413 out of a car? I'm being told that a car 727 will not bolt up to a motorhome 413.
krcevs  

Generally, motor homes with Mopar engines were built on Dodge truck chassis, so it's basically a truck set-up with a truck oil pan, motor mounts, and exhaust manifolds. The intake may have some additional vacuum ports as well.

Otherwise, it's just a 413 and the big-block 727 transmission should bolt right up.  

I have a 413 from a motorhome that I put in my 74 RR for a while.It had a gear driven cam which turns in the oppisite direction of chain drive timing sets.
I replaced the cam and timing set with a 440-6 cam which was TOO much for the 413. I pulled the 413 out and re-installed my 383.
When I put the 413 in, I used my 727 trans. The 727 will bolt up to the 413.
Have you checked to see if you may have a gear drive cam? They can be replaced with chain drive but you will also have to replace the distributor. A dist. from a 440 will work.
If you need more info, e-mail me. I may even have some parts you will need.  

There are some 413 (industrial) engines out there that will have a hard time bolting up to a 727.  I was going to bid on a surplus military auction one time.  The add was for 250 Chrysler 413 forged steel 8 bolt crankshafts and a casting / part number were listed.  I spent a week trying to pinpoint these numbers.  Finally tracing them down to a listing for a 413 industrial engine.  Apparently they have 8 bolt crank flange premium forged steel and the tail shaft is approx 1/2 inch longer then passenger car/truck use.  Needless to say they would not work with any regular application,  to bad though    

ih84n:
There are some 413 (industrial) engines out there that will have a hard time bolting up to a 727.  I was going to bid on a surplus military auction one time.  The add was for 250 Chrysler 413 forged steel 8 bolt crankshafts and a casting / part number were listed.  I spent a week trying to pinpoint these numbers.  Finally tracing them down to a listing for a 413 industrial engine.  Apparently they have 8 bolt crank flange premium forged steel and the tail shaft is approx 1/2 inch longer then passenger car/truck use.  Needless to say they would not work with any regular application,  to bad though  

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Those 8-bolt Industrial cranks with the 'extended flange' are the same as the '62 Max Wedge cranks. There is also a more common, later 413 truck and industrial
crank with an 8-bolt 'standard length' flange that is the same as the later Max-Wedge and 426 Hemi cranks.