I am converting from 304 to 360 in a cj7 no body can tell me if the 304 flywheel will work on a 360. I have heard that they are balinecd difrent any help would be great.[[/:

I don't have a clue, but ...

If somebody said they were balanced different, then I would start wondering about them. They can have a different bolt pattern, thickness, weight or tooth count or something. To me balanced is balanced !!

The 304 flywheel is externally balance, where the 360 fly wheel is internally balenced..

Unfortantly they are not compatiable.

Now there are shops that can balance them for you but its cost more then a new one..

Originally posted by WheelingPiazza:
<STRONG>The 304 flywheel is externally balance, where the 360 fly wheel is internally balenced..

Unfortantly they are not compatiable.

Now there are shops that can balance them for you but its cost more then a new one..</STRONG>


yep, but its a 6 in one half dozen in another situation.. as long as you bring in the crank and a connecting rod and piston head... and let em balance the whole shot

you either put a stock 360 flywheel on your 360, OR you get the entire rotating assembly balanced, the whole thing is better, but requires engine teardown.

they are $250 for a new billet steel one, and pretty hard to find used ( cast)

the steel is better because it can always be rewelded and cut flat, but the cast is pretty much trashed if it gets grooved.

the part numbers get pretty confusing too, if your buying a used one, try to get one from a running 360, thats really about the only way to know for sure thats its factory application.

there are some ID numbers and such, and alot of info on the amx files BBS about determining original applications for amc flywheels.

Out here its not to hard to find one actually.. It all depends on how determind you are..

The 304 and 360 are balanced differently. I'm looking at 4 new 360 ones right now. I sell them for 139.95 plus shipping.

Hey SteveN

they are hard to find anywhere Ive ever been.

I would say youd do well to put a plug in on the ORC BBS, Its a very common question there.

I found mine after several months of looking, but alot of guys out there are still looking.

Originally posted by ozarkjeep:
<STRONG>Hey SteveN

they are hard to find anywhere Ive ever been.

I would say youd do well to put a plug in on the ORC BBS, Its a very common question there.

I found mine after several months of looking, but alot of guys out there are still looking.</STRONG>

As I said I have 4 new factory ones in stock with a near endless suply. You just have to know which factory part # to order.

<IMG SRC="smilies/wink.gif" border="0">

Originally posted by WheelingPiazza:
<STRONG>The 304 flywheel is externally balance, where the 360 fly wheel is internally balenced.</STRONG>

AFAIK, all AMC v-8's are externally balanced. I know the 304, 360, and 401 are. The flywheels do have the same bolt pattern btw.

And if ya think a 360 flywheel is tough to find, try finding one for a 401 sometime <IMG SRC="smilies/rolleyes.gif" border="0"> I know of one for sale near me now, but a little late for me... a looong time ago I gave up searching and had the engine rebalanced to a different flywheel. If you ever do rebalance an AMC v-8, set it up for a 304's flywheel. Those things are plentiful <IMG SRC="smilies/beer.gif" border="0">

Originally posted by WheelingPiazza:
<STRONG>The 304 flywheel is externally balance, where the 360 fly wheel is internally balenced..

Unfortantly they are not compatiable.

Now there are shops that can balance them for you but its cost more then a new one..</STRONG>

all amc v-8's are externally balanced. if you don't know the info don't go posting it. <IMG SRC="smilies/rolleyes.gif" border="0"> <IMG SRC="smilies/thefinger.gif" border="0">


dave

Each model of AMC's are different....part numbers vary between 258's,304,360 and the 401. Crankshaft breakage follows the horrible vibes of mismatched flywheels. Only use the 360 flywheel on a 360...etc. I learned the hard way...during a clutch change years ago...I had a resurfaced 360, 37lb. flywheel that matched the diameter and bolt pattern of my 258. It started up and nearly shook apart...then I did the clutch install over.... <IMG SRC="smilies/frown.gif" border="0"> <IMG SRC="smilies/frown.gif" border="0">

here is some quoted text from Tony Zamish ( I think) from the AMC list.
this will help you find a factory used flywheel, the number he is talking about 3197219 is on the back of the flywheel, down in side the "bowl" ytoull need some brake cleaner and a wire brush to find the numbers.

---------------------------------------

THREE distinctly different versions of the flywheel with
>part #3197219. If you have one of these flywheels, and you want to follow
>along with the description that follows, place your flywheel flat on the
>bench with the casting number facing up and at 12:00. (like you're reading
a
>clock)

>Version #1: #3197219-C
>Crankshaft flange recess measurement: 4.500"
>Counterweight position: at 7:30
>Known to be out of a dead stock 1970 390 4-speed car.

>Version #2: #3197219-C
>Crankshaft flange recess measurement: 4.500"
>Counterweight position: at 4:30
>Known to be out of a dead stock 1970 360 4-speed car.

>Version #3: #3197219 Does not have the "-C" after the casting
>number, but does have "E-25" (or other letter/number combo) cast in
>just above the counterweight.
>Crankshaft flange recess measurement: 4.650 (approx. 5/32" larger
>than the above two versions)
>Counterweight position: 9:30
>Exact application: unknown. Believed to be out of a 72/up 360 or 401
>(304's do not have a counterweight)

>All cast-in counterweights are one square inch, with the exception of
>version #3 which is 1/4" shorter. (length 1", width 1", depth 3/4")
-------------------------------------------

Hope its helpful!

they are $250 for a new billet steel one, and pretty hard to find used ( cast)

the steel is better because it can always be rewelded and cut flat, but the cast is pretty much trashed if it gets grooved.




I checked with a local Chrysler parts counter, and it was $201 for a stock replacement AMC 360 flywheel. I suspect that this is the cast( didn't think to ask at the time). This is in Can$, so sor you US guys should be in the $125US range.