Re: [Amc-list] light flywheels, T-5, Volvos, AMC content

["Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>]

You are correct all V-8s are externally (known as Detroit balance) balanced.
You are wrong that it must be a six cylinder flywheel because it has no
counterweights. It could be
a six flywheel but just because it has no counterweights is not enough
reason. Sixes are internal
or neutral balance so there should be no additional counter weighting
balance holes drilled into them.
The 304 flywheel has material removed from the edge of the flywheel for
balancing.
That is of course if we are assuming that weights means the additional
material cast into
the flywheel that is used for balancing and looks like a square shaped pad
on the engine side.
I have a 1970 304 with a flywheel. It has no additional weight cast into it.
I think the weights are
on 343, 360, 390 and 401 flywheels. I think 343 and 360 flywheels have the
counterweight in a different location.
This web site has a pretty good description of AMC flywheels.
http://www.trailhed.com/amc_flywheel.html

Hope this helps,
Armand


----- Original Message ----- 
From: "Sandwich Maker" <adh@xxxxxxxxxxxxxxxxx>
To: <amc-list@xxxxxxxxxxxx>
Sent: Tuesday, May 06, 2008 5:02 PM
Subject: Re: [Amc-list] light flywheels, T-5, Volvos, AMC content


> " From: Tom Jennings <tomj@xxxxxxx>
> "
> " Basically, this guy switched from a 24 lb flyweel to an 8 lb
> " (eight!), which calculates (this is the drag-race interest
> " part) to the equivelant of removing 321 lbs of mass from his
> " car. Having to spin up a heavy flywheel is WORSE than the
> " same amount of mass just sitting in the car. He lost a bit of
> " 'parking lot' drivability but not much else.
>
> he probably lost more than 'a bit'... ;^>
> but he sounds pretty race-oriented.
>
> " PS: where exactly is the AMC number on (manual trans)
> " flywheels? I have what I beleive is a 304 flywheel but I can't
> " find the AMC number on it.  There's no balance weights so I
> " assume it's a 304. Came with my T-150/OD.
>
> all v8s are externally balanced, even the 304, so if it doesn't have a
> weight it must be a six flywheel.  i think they're all the same
> general weight.
> ________________________________________________________________________
> Andrew Hay                                  the genius nature
> internet rambler                            is to see what all have seen
> adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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