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#651550 - 03/26/10 04:12 AM 413 motorhome engine ???"s
jt4406 Offline
pro stock

Registered: 01/22/03
Posts: 1422
Loc: Ky
Had the opportunity yesterday to buy a 413 engine out of a motorhome. It was complete with a holley carb (looked to be one with a governor). I passed on it. It had the industrial waterpump setup on it so I figured the heads, intake, carb, exhaust, were all basically useless. It had a small diameter balancer, didn't look to be externally balanced, but not the same diameter as a steel 440 crank would have had. Do you guys know if the block, crank and rods were useful in an automotive application?

thanks
Jess
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Yeah, it's hopped up to over 160...

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#651551 - 03/26/10 06:11 AM Re: 413 motorhome engine ???"s [Re: jt4406]
Dodgem Offline
master

Registered: 03/21/08
Posts: 5664
Loc: Ontario, Canada
What year?

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#651552 - 03/26/10 07:36 AM Re: 413 motorhome engine ???"s [Re: jt4406]
Challenger 1 Offline
Too Many Posts

Registered: 02/05/05
Posts: 25207
Loc: Cincinnati, Ohio
Where's Doc fiberglass? I bet he knows.
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#651553 - 03/26/10 07:52 AM Re: 413 motorhome engine ???"s [Re: Dodgem]
RC91 Offline
member

Registered: 03/23/10
Posts: 142
Loc: Flood City PA
Many of the industrial type big blocks used 8 bolt cranks like a hemi. The block, crank, and maybe the rods could be usable. The heads have 318 sized valves (1.78 Intake, 1.50 Exhaust) and the ports resemble a small blocks ports. Those motors are usually low compression, like 7:1 and rated around 160 HP.

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#651554 - 03/26/10 08:30 AM Re: 413 motorhome engine ???"s [Re: RC91]
chargervert Offline
master

Registered: 09/18/04
Posts: 6788
Loc: RI Deep in the rust belt
I have a 413 Motor home engine,and it says 265 horsepower right on the air cleaner lid.
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70 Charger R/T SE 472 Hemi 70 Charger R/T convertible 70 Charger R/T V Code Sixpack 69 Charger R/T SE Sunroofcar 68 Charger 383 68 Charger 318 71 Charger R/T 70 Challenger convertible 71 Challenger convertible 71 Cuda 340 09 Challenger R/T Classic

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#651555 - 03/26/10 09:09 AM Re: 413 motorhome engine ???"s [Re: chargervert]
StealthWedge67 Offline
master

Registered: 07/19/06
Posts: 3534
Loc: Puyallup, WA
413's are a compromise anyway because of the bore size (smaller than a 383). If you're looking for a block to rebuild with performance in mind, there's really no reason to start with anything except a 440 or 400.
_________________________
'67 Satellite - Northwest Drag Tour Tested - 11.75 @ 113.
Pump gas 452" low deck in a plain jane 383 wrapper.

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#651556 - 03/26/10 10:31 AM Re: 413 motorhome engine ???"s [Re: Challenger 1]
Doc Fiberglass Offline


Registered: 07/04/08
Posts: 17475
Quote:

Where's Doc fiberglass? I bet he knows.




You rang ? ..

To the OP ... you passed on it ? .. how much were they asking for it? I have seen a JY asking as much as 1000$ ...and as little as 125$(with a trans) in a burned-out MH .... toasted because the Berry crab started leaking like a sieve ....and burned the front half of the MH almost to-the-ground !!!

IS this motor usable in a car .....as-is ? If you want a GRUNT motor and if you want to heavily modify the exh mans .. sure. But the entire combo is more suited to a motorhome/truck application.

Should you toss all those parts you mention? ... YEAH ... TOSS 'EM over here ! I am doing some serious R%D with this combo and am saving all these parts I can.

Are the parts that you mention worth saving? ... I say yes. Are they as good as a typical 440 HP combo ? ... probably not - as some would suggest.

But then did the smaller-bore Max-Wedge run pretty good ?

Yup ! ..



""""""""""Had the opportunity yesterday to buy a 413 engine out of a motorhome. It was complete with a holley carb (looked to be one with a governor). I passed on it. It had the industrial waterpump setup on it so I figured the heads, intake, carb, exhaust, were all basically useless. It had a small diameter balancer, didn't look to be externally balanced, but not the same diameter as a steel 440 crank would have had. Do you guys know if the block, crank and rods were useful in an automotive application? """""""""""

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#651557 - 03/26/10 10:55 AM Re: 413 motorhome engine ???"s [Re: Doc Fiberglass]
chargervert Offline
master

Registered: 09/18/04
Posts: 6788
Loc: RI Deep in the rust belt
The one I have is complete,carb to pan,with trans,and it runs. The first person to put $400.00 in my hand can take it.
_________________________
70 Charger R/T SE 472 Hemi 70 Charger R/T convertible 70 Charger R/T V Code Sixpack 69 Charger R/T SE Sunroofcar 68 Charger 383 68 Charger 318 71 Charger R/T 70 Challenger convertible 71 Challenger convertible 71 Cuda 340 09 Challenger R/T Classic

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#651558 - 03/26/10 12:26 PM Re: 413 motorhome engine ???"s [Re: chargervert]
RC91 Offline
member

Registered: 03/23/10
Posts: 142
Loc: Flood City PA
Dodge 1971/72 V8- 413-1 4 BBL 4.188 X 3.75 7.5 to 1 265 @ 4000 445 fp @ 2400 Sodium Ex. Valves

Dodge 1971/72 V8- 413-3 4 BBL 4.188 X 3.75 7.5 to 1 238 @ 3600 407 fp @ 2000 Sodium Ex. Valves

Dodge 1973 V8- 413-3 4 BBL 4.188 X 3.75 7.5 to 1 190 @ 3200 355 fp @ 2000 Sodium Ex. Valves

Dodge 1976 V8- 413-3 4 BBL 4.188.X 3.75 7.54 to 1 175 @ 3200 325 fp @ 2000

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#651559 - 03/26/10 01:03 PM Re: 413 motorhome engine ???"s [Re: chargervert]
Doc Fiberglass Offline


Registered: 07/04/08
Posts: 17475
Quote:

The one I have is complete,carb to pan,with trans,and it runs. The first person to put $400.00 in my hand can take it.




In my experience .... your hand is going to be OUT THERE a long LONG time !

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#651560 - 03/26/10 01:05 PM Re: 413 motorhome engine ???"s [Re: RC91]
Doc Fiberglass Offline


Registered: 07/04/08
Posts: 17475
Quote:

Dodge 1971/72 V8- 413-1 4 BBL 4.188 X 3.75 7.5 to 1 265 @ 4000 445 fp @ 2400 Sodium Ex. Valves

Dodge 1971/72 V8- 413-3 4 BBL 4.188 X 3.75 7.5 to 1 238 @ 3600 407 fp @ 2000 Sodium Ex. Valves

Dodge 1973 V8- 413-3 4 BBL 4.188 X 3.75 7.5 to 1 190 @ 3200 355 fp @ 2000 Sodium Ex. Valves

Dodge 1976 V8- 413-3 4 BBL 4.188.X 3.75 7.54 to 1 175 @ 3200 325 fp @ 2000




WHERE did you come up with these #'s ?

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#651561 - 03/26/10 02:04 PM Re: 413 motorhome engine ???"s [Re: jt4406]
Commando1 Offline
master

Registered: 03/16/07
Posts: 9296
Loc: South-Central (Sebring), FL
This can be debated ad nauseum but what it boils down to is that a 413 block is like any other BB (I said BLOCK, not engine) . No dif. The block itself: $150. Only use it as a starting point to a total budget build.
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#651562 - 03/26/10 02:06 PM Re: 413 motorhome engine ???"s [Re: Doc Fiberglass]
2young2drive Offline
member

Registered: 06/25/09
Posts: 10
Loc: ohio

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#651563 - 05/06/10 04:32 PM Re: 413 motorhome engine ???"s [Re: 2young2drive]
wildfish72 Offline
mopar addict

Registered: 10/25/04
Posts: 495
Loc: fresno ca
i picked up a 413 some years ago with all that crap on it , and slapped a set of 906 heads i have laying around and a summit cam i had also a tm7 with a 150 shot of nos and man it runs pretty dam good on or off the bottle i like the motor becuase i cant git it to ping at all and i can run some shitty gas in it if im broke that week . i will say the 413 spins like a 383 but torqs like 440 , i like the motor for its all around powerband it has
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#651564 - 09/13/10 09:44 AM Re: 413 motorhome engine ???"s [Re: wildfish72]
partfiler69 Offline
Still Wondering

Registered: 04/10/08
Posts: 223
Loc: Poplar Bluff, Missouri
I just picked one of these up, and I am wondering what can be used? I have a 2bbl 383 out of a 70 polara for parts, can I use the 413 intake on the 906 heads? This is a budget build for right now. I just want to know what to hang on to, and what to toss on the scrap trailer.
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#651565 - 09/13/10 11:05 AM Re: 413 motorhome engine ???"s [Re: partfiler69]
jt4406 Offline
pro stock

Registered: 01/22/03
Posts: 1422
Loc: Ky
Quote:

I have a 2bbl 383 out of a 70 polara for parts, can I use the 413 intake on the 906 heads?




If I understand you correctly, you want to use the 413 intake on the 906 heads MOUNTED ON THE 383, correct? I believe the 413 is an RB engine, while the 383 is a B engine. If all this is right, the intake is too wide to fit your 383.
jt
_________________________
Yeah, it's hopped up to over 160...

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#651566 - 09/13/10 11:19 AM Re: 413 motorhome engine ???"s [Re: jt4406]
Doc Fiberglass Offline


Registered: 07/04/08
Posts: 17475
Some people THINK that the 413 MH intake is a way-diff piece than most-any RB intake. NOT so ...

It is a little diff ... like it has COOLANT running through-it instead of exhaust heat AND that that particular manifold is way yester-tech ....

You can do muchO BESTer .. with a more up-to-date intake ...

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#651567 - 09/13/10 11:20 AM Re: 413 motorhome engine ???"s [Re: jt4406]
partfiler69 Offline
Still Wondering

Registered: 04/10/08
Posts: 223
Loc: Poplar Bluff, Missouri
I'm sorry, let me try this again. I want to take the oil pan, pickup tube, heads and water pump housing from the 383 and put it on the 413. Did I forget anything?
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#651568 - 09/13/10 11:41 AM Re: 413 motorhome engine ???"s [Re: partfiler69]
Doc Fiberglass Offline


Registered: 07/04/08
Posts: 17475
Quote:

I'm sorry, let me try this again. I want to take the oil pan, pickup tube, heads and water pump housing from the 383 and put it on the 413. Did I forget anything?




YES ... it will work .. but you can do better. Get a set of small chambered heads for more compression(the MH 413 is very weak in that area). And a set of regular 383 heads(906's?) will not help.

In this swap ... watch out for the top two ports of the water pump in the block. On the 413 - using those "goofy" heads ... these ports are more-than-likely plugged with sediment.

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#651569 - 09/13/10 11:43 AM Re: 413 motorhome engine ???"s [Re: Doc Fiberglass]
Anonymous
Unregistered


much easier just to take a felt marker and write
"413" on the 383's valvecovers... no?

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