360 crank was Re: SV: aluminum - steel flywheels (was Re: Fw: Flywheel)

[Schuyler Wrobel <sky62@xxxxxxxxxxxxx>]

FWIW I have a 360 crank also with drilled counterweight holes, just  
like yours,
and some rounded corners, although some are beveled. the rod and main
journals have grooves on each side. the number is 4027169-3
followed with a circle with 6 pie wedges in it, and the the letters CFD
after that. the number is cast in, by the way, and there are other  
casting
marks and ridges also visible. I read that all 360 cranks are cast ,,,
but I also have heard that if you tap on the crank with a tool or  
stick/whatever
and it rings like a bell, which mine does, then it's a forged steel  
crank?
so I'm not sure about that test? I also noticed some grooves cut in  
concentic
circles on the side of some of the throws? My crank also has grease  
pencil
markings on it, but I wont confuse the matter any more with those.

I was and still might use this crank for my Poly stroker project some  
day,
when I can afford the machine work.

Schuyler
62 Dodge Dart 440 wagon w/ Poly 318
 <http://www.1962to1965mopar.ornocar.org/ml-wrobel62.html>
FYI - I Do the Decal designs for the Poly head 318 and more! email me  
with your needs -
 <sky62@xxxxxxxxxxxxx>



On Mar 20, 2009, at 9:28 AM, Knud-Erik Holm wrote:
> To confuse matters further, I have just taken my 360 apart. It  
> looks really
> nice inside. But I will have to messure all the parts before I will  
> make any
> decisions. Anyway the crankshaft has number 3418640-2 and in one of  
> my books
> it is said to be a cast shaft. In another book it is said that the  
> 360 were
> made with a forged crank that are internally balanced. The  
> difference is the
> counterweights. Forged is rounded and cast is sharpcornered. It  
> looks like
> mine are round cornered. And the counterweights are drilled with  
> holes some
> large at the end of the crank. And smaller ones at the other weights.
>
> Please help me someone?
>
> Knud-erik Bergstein Holm
>
> -----Oprindelig meddelelse-----
> Fra: Gary H. [mailto:spigot2039@xxxxxxxxxxx]
> Sendt: 20. marts 2009 13:30
> Til: 1962to1965mopars@xxxxxxxxxx
> Emne: aluminum - steel flywheels (was Re: Fw: Flywheel)
>
>
> I believe the aluminum flywheels are favored by the circle / dirt  
> track
> racers as for fast rpm increase heading out of the corners. Mopar  
> engines
> put out good torque by design so don't mind the steel flywheel on  
> street or
> drag use.
>
> Thanks,
> Gary H.
>
> -----Original Message-----
> > > This brings up a question I have had and may help Knud in his  
> > > decision. I
>
> > > know aluminum flywheels being lighter , will overcome inertia  
> > > quicker
> > > therefor gaining RPM faster. In a big block B body  with about  
> > > 3:50 rear
> > > end ratio - 4 speed-5500-6000 RPM limit - about 375-400 Horse -any
> > > advantages or disadvantages to running an aluminum flywheel. Driven
> street
> > > and every so often on the strip? My thoughts: a 413 has enough  
> > > torque to
> > > get you off the start line  ( or from a stop sign) without the  
> > > inertia of
>
> > > a steel flywheel. The aluminum flywheel would wind up quicker, Any
> > > experience out there with the aluminum
> > > flywheels?...................MO.......ew  iowa
>
>
> ----
> ---
>
>
> ----
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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!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html.