1970 413 engine and tranny

[roadrunnerman]

Got a chance to buy a 413 and 727 tranny that came out of a motorhome. What are the pros and cons for this going into a B body? The guy wants $600 for both.

 

[moparsteve636]

You'll have to use the exhaust manifolds! also they have a funky water pump set up big and bogus! And you'll need the b-body eng. mount brackets, oil pan and pick up, I'm not sure about the rear tranny mounting location! IMHO I would pass it by! You should be able to find a correct big block and trans that will save you money and head aches.

 

[trimmer]

Got a chance to buy a 413 and 727 tranny that came out of a motorhome. What are the pros and cons for this going into a B body? The guy wants $600 for both.

This is not really a new topic. There is much information on this very site about the motor home 413.

My opinion for 600 plus what it will cost to make it work in a b-body will be more than the cost of what a motor and transmission that will fit your needs would be. I say pass it by.

 

[roadrunnerman]

Thanks guys. Just wanted to check if the hassle was worth it. Wasn't looking for anything to be original for any one car.

 

[tallhair]

I've got a truck load of 727's and a 64 or 65 413 if you want one and it's not out of a motor home. I had it in my 68 and later in my 70 RR. Crank is drilled for 4 speed, but they probably all were back then. PM me if you are interested. It's gonna need a rebuild and I would imagine the 727's need rebuilt too.

 

[roadrunnerman]

Might take you up on that.

 

[tallhair]

We'll make it a package deal and you can take the short bed back with you too ;0. I call it Mopar Bundling

 

[roadrunnerman]

We'll make it a package deal and you can take the short bed back with you too ;0. I call it Mopar Bundling

OK,you've been watching American pickers again, haven't you?

 

[tallhair]

I confess I love that show and bundling has its merits. Been doing it for years

 

[Meep-Meep]

The only real problem with a 413 is piston and ring availability. They are available, but as stock cast replacements and the rings are probably the 5/64 set. If you want to just make a good running engine you can do so for about the same money as a 440 (piston cost will be higher) and you will be just fine. All the aftermarket and OEM 440 accessories with fit. Oh, you might want to check exhaust valve to block clearance. These old 413's has 1.60" EX valves but I don't recall how much room you will have left with the 1.74". We are only talking .070" per side larger so they may be just fine but do check just to be sure.

 

[Budnicks]

The only real problem with a 413 is piston and ring availability. They are available, but as stock cast replacements and the rings are probably the 5/64 set. If you want to just make a good running engine you can do so for about the same money as a 440 (piston cost will be higher) and you will be just fine. All the aftermarket and OEM 440 accessories with fit. Oh, you might want to check exhaust valve to block clearance. These old 413's has 1.60" EX valves but I don't recall how much room you will have left with the 1.74". We are only talking .070" per side larger so they may be just fine but do check just to be sure.

yeah with the small bore of the 413ci cylinders, if you use different heads {the RV heads are mostly crap, for performance, because of bad springs, retainers, seals, locks & with smaller intake & exhaust valves & restrictive ports} especially with better heads, with larger valves, then you may/probably need to notch the top of the cylinders, to clear the larger intake & exhaust valves & un-shroud them too, for better air flow... you can sometimes use a head gasket as a pattern, somewhat to see where it needs to be notched...

 

[dodge41969]

I used to work at 440 Source, used to have people constantly call about kits for 413's and why we didn't offer a kit, I'd tell them I could sell them a crank and rods...but that was pretty much it, then I'd tell them to check on having pistons made. Funny thing is they'd call and said they SCORED a 413!!....good luck with pistons I'd start off by saying. I do have one good thing to say about 413's, I have a forged crank out of one in my 440....that was originally a cast crank '73 440....but that's about it.