RE: 1980 440 and transmission- Balance

[ntolerance <ntolerance@xxxxxxxxxxx>]

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Not to start an arguement, but I have had a total of 4 trucks with big 
blocks sporting steel cranks from the 70's. All were internally 
balanced, 3 of which were pulled apart and verified to have steel 
cranks. Of the pick ups, all were big block, sitck shift (NP435 
trans)3/4 ton 4X4's. Two 400's and one 440. The aforementioned Motorhome 
was an automatic 440.

The 440 motor from the pick up was a 74 vintage, so it really didnt 
spark any odd feelings. I figured it was a left over. The two 400 
powered trucks were  a 77 and a 78. I always wondered since these years 
were supposedly the last for big blocks, if they didnt supplement Direct 
Connection cranks in production trucks to use up stock that might not 
sell. Nothing concrete to back that up,just my speculation. The motohome 
I figured got a steel crank based on the fact that it was a very harsh 
application.

In later years of small block production, Chrysler got light bulb turned 
on and with their cast crank engines, instead of adding the weight to 
the flexplates and balancers, the figured out that if you removed the 
weight from the said balancer or flex plate in the 180 degree opposite 
spot from the place you would have added the weight, you would get the 
same effect. So, if you buy a late model small block engine, some, not 
all will have a flex plate with an area "missing" a section and a 
balancer that on the surface looks like a internally balanced unit. as I 
recall they started this in the later 80's. I have never seen this sort 
of balancing on any big block though. Curiously, my former truck an '89 
W250 with a 360, did not have this sort of balancing arrangement. 
(original engine) I often wondered if, because this was again a HD 
truck, they felt that removing any material from the flex plate would 
allow it to fail prematurely under heavy use, and used the older system. 
Again nothng to back that up, just my hunch.

That being said, Gary is probably right, the engine will most likely be 
a cast crank externally balanced engine.

Doc.


GARY WILSON wrote:
> 
> The engine will most likely be an externally balanced engine.  Will not 
> have 
> a steel crank.  I picked up a 440 from a a75 Motor home and it is 
> externally 
> balanced.  DId not notice any difference with the heads.  The 413s had 
> different heads and water pump set up.
> 
> 
> 
> MOPAR413 (Gary) 64 Polora 500
> 
> 
> 
> 
> >From: Dennis <gaustin95827@xxxxxxxxxxxxx>
> >Reply-To: 1962to1965mopars@xxxxxxxxxx
> >To: 1962to1965mopars@xxxxxxxxxx
> >Subject: 1980 440 and transmission
> >Date: Sat, 11 Dec 2004 03:14:54 -0800
> >
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> >I need an engine and there is an add in the San Diego Trader where I 
> >live 
> >for a complete 440 and transmission that per the ad was removed for a 
> >diesel conversion with only 40K miles.  I have not called yet, what is a 
> >
> >fair price for the engine, I really don't need the transmission.  Sounds 
> >
> >like a truck or RV engine.
> >
> >Thanks
> >
> >
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Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

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