Re: Motor Home 440??
[Re: flyman]
#2286390
04/12/17 01:22 PM
04/12/17 01:22 PM
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Joined: May 2003
Posts: 1,751 Graham, WA
Polarapete
top fuel
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top fuel
Joined: May 2003
Posts: 1,751
Graham, WA
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You can be sure it is a cast crank by the size of the harmonic dampner...it will be huge. I bought a 1977 MH 440 for $100.00 last year and had to race 5 other guys to get it. It came with the 727, a Thermoquad and the stock (not cracked) exhaust manifolds. The OEM starter was dead, but we bolted on a mini-starter and ran a compression test after squirting ATF in all the cylinders. The test showed uneven results, so we will rebuild it sometime down the road. With everything we got, good standard block, all the electrics, 452 heads, 727 core trans....it was a steal!!!
I have raced a 440 with a cast crank and 400 to almost 500 HP they are fine.
1986 Dodge Ramcharger 440 2wd, Bracket Racer Under Construction 1998 Ram 2500 QuadCab, new daily driver. 2008 Honda Element 2014 Carry-On 7x14 Cargo Trailer
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Re: Motor Home 440??
[Re: Cab_Burge]
#2286408
04/12/17 01:52 PM
04/12/17 01:52 PM
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Joined: Oct 2011
Posts: 189 mn
flyman
OP
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OP
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Joined: Oct 2011
Posts: 189
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Re: Motor Home 440??
[Re: flyman]
#2286412
04/12/17 01:54 PM
04/12/17 01:54 PM
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Joined: Jul 2011
Posts: 972 Chicago
PurpleBeeper
super stock
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super stock
Joined: Jul 2011
Posts: 972
Chicago
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Here's a link to a picture of a cast crank 440. The balancer is HUGE and sort of "rounded" at the snout. http://i874.photobucket.com/albums/ab309...zpst70b2kmq.jpgThe forged crank will have a balancer about 1" thick & symmetrical (small rod) or have a horseshoe weight in front (big rod). I had a '73 motor home 440 once and it had extra cooling passages. There were two 1/8" diameter holes on each cylinder deck, just below each cylinder on the deck surface itself. Those holes mate up with a cooling passage "spark plug loop" in a motor home head for extra cooling. You can find those head gaskets if you look hard enough, punch holes in standard ones, or just use regular gaskets & block them off (most motors don't have them) if you're not using motor home heads.
70 Roadrunner convt. street car
440+6, NOS, 4-spd, SS springs
'96 Mustang GT convt. street car
'04 4.6 SOHC, NOS, auto, lowered
"Officer, that button is for short on-ramps"
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Re: Motor Home 440??
[Re: flyman]
#2287242
04/13/17 08:34 PM
04/13/17 08:34 PM
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Joined: Jan 2003
Posts: 28,096 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,096
Irving, TX
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Motorhome as in big full size coach or a vehicle built with a Dodge van front end on it?
The big coaches can have the industrial type engines instead of the engines used in passenger vehicles.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Motor Home 440??
[Re: flyman]
#2287843
04/14/17 08:11 PM
04/14/17 08:11 PM
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Joined: Aug 2006
Posts: 2,563 God's Country Maryland
GODSCOUNTRY340
master
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master
Joined: Aug 2006
Posts: 2,563
God's Country Maryland
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I'm rebuilding a '78 motor home 440 with the large chamfer on top of the cylinders. I had to use Edelbrock's head gaskets for a 4.505" bore to clear them. I got them from Summit. Here's the Edelbrock number for them- EDL-7325.
I love the smell of Deer guts in the morning, it smells like... VICTORY!
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Re: Motor Home 440??
[Re: feets]
#2287927
04/14/17 11:01 PM
04/14/17 11:01 PM
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Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
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The big coaches can have the industrial type engines instead of the engines used in passenger vehicles.
The pre 1972 and earlier Class A motorhomes and HD trucks had the industrial 413 which had a bunch of special H.D. parts in them only found on them. The 1973 and later 440 motor home motors, Class A.B and C had either the 440 low compression vans and pickups motors in them or the 440-3 with the extra exhaust valve cooling passages in the heads and blocks, no other special parts
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Motor Home 440??
[Re: flyman]
#2287954
04/14/17 11:32 PM
04/14/17 11:32 PM
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Joined: Feb 2008
Posts: 452 Monrovia, So-Cal, USA
racerhog
mopar
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mopar
Joined: Feb 2008
Posts: 452
Monrovia, So-Cal, USA
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I had a 1977 Dodge Explorer Class-A 31' With a 727 A.T. with a Thermoquad... That bad azz boy would Run!!!! Pulled grades Awesome, Passing other rigs like they were standing still.. That bad boy would love to cruise at 70 MPH, the sweet spot. Now the draw back to it all.... Was man it would not pass a gas station.. Always wanted to make a hard right turn????? One thirsty Unit for sure. I bought it for $1.00 in a divorce settlement.. All I needed to do was put a roof on it. That was a fun deal. But used the hell out of that rig... Good Engine for sure... Never let me down....
Last edited by racerhog; 04/14/17 11:33 PM.
Bob(Cowboy)Hogan Monrovia So-Cal
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Re: Motor Home 440??
[Re: Cab_Burge]
#2288378
04/15/17 07:15 PM
04/15/17 07:15 PM
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Joined: Jan 2003
Posts: 28,096 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,096
Irving, TX
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The big coaches can have the industrial type engines instead of the engines used in passenger vehicles.
The pre 1972 and earlier Class A motorhomes and HD trucks had the industrial 413 which had a bunch of special H.D. parts in them only found on them. The 1973 and later 440 motor home motors, Class A.B and C had either the 440 low compression vans and pickups motors in them or the 440-3 with the extra exhaust valve cooling passages in the heads and blocks, no other special parts I was referring to the 440-3 with the large diameter high mounted water pump and those heads that won't flow.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Motor Home 440??
[Re: feets]
#2288804
04/16/17 01:55 PM
04/16/17 01:55 PM
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Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
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Last edited by Cab_Burge; 04/16/17 01:56 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Motor Home 440??
[Re: flyman]
#2289208
04/17/17 01:55 AM
04/17/17 01:55 AM
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Joined: Dec 2003
Posts: 5,314 Carstairs, Alberta, Canada
dave571
master
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master
Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
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Most likely a regular 440 found in light trucks and cars of the same vintage.
That said, I have seen winnebagos with steel crank 440's (yes I know the difference) as late as 1980 (yes I know the 440 stopped in passenger cars in 78) in a class A chassis.
Heads are taller than regular passenger heads, and use a smaller plug, due to the added cooling passages.
I am aware of the 413 industrial motors used in earlier winnebago's, and those were not the same at all.
The only notable visual difference with these, is that there is a large gap (about 1/2 inch) between the valve cover mounting surface, and the intake. On a regular passenger motor, the valve cover is nearly touching the intake. That said, the intakes do interchange. The plugs are still straigh, not like the 413 which had angled plugs like a small block
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