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Flywheel ID? #631572
03/05/10 06:09 PM
03/05/10 06:09 PM
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Carmel, NY
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ChrisR Offline OP
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I've got a flywheel here that I'm looking to sell and I just can't remember what it's for. I'm hoping someone can help me identify it.
It has a 6 bolt flange and 143 teeth. The OD of the ring gear is about 14-9/16" and the OD of the flywheel itself is about 13-3/4". On the back the raised area is about 12" OD and it's got three big drilled "holes".
I am assuming that it's an external balance flywheel because of the "holes".
It's only got six holes in it for mounting the clutch.

Can anyone tell me what this fits and what clutch it would use?

Thanks!

Re: Flywheel ID? [Re: ChrisR] #631573
03/05/10 07:22 PM
03/05/10 07:22 PM
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Charlotte, NC
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446acuda Offline
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Sounds like a 360 truck flywheel that uses an 11" clutch

Re: Flywheel ID? [Re: ChrisR] #631574
03/05/10 09:03 PM
03/05/10 09:03 PM
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Rio Linda, CA
John_Kunkel Offline
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Quote:

The OD of the ring gear is about 14-9/16"




That's a 143 tooth flywheel for 11" and 12" clutches. The depth and diameter of the three drilled holes will determine what engine it is for.


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Re: Flywheel ID? [Re: John_Kunkel] #631575
03/05/10 09:30 PM
03/05/10 09:30 PM
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Charlotte, NC
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446acuda Offline
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Quote:

Quote:

The OD of the ring gear is about 14-9/16"




That's a 143 tooth flywheel for 11" and 12" clutches. The depth and diameter of the three drilled holes will determine what engine it is for.


It's not very likely it's a flywheel for an externally balanced big block. 99% chance it is for a 360.

Re: Flywheel ID? [Re: 446acuda] #631576
03/05/10 10:03 PM
03/05/10 10:03 PM
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Western Colorado High Desert
moparmarks Offline
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Heres a 360 143T truck wheel.


72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
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Re: Flywheel ID? [Re: 446acuda] #631577
03/06/10 12:40 AM
03/06/10 12:40 AM
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Rio Linda, CA
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Quote:

It's not very likely it's a flywheel for an externally balanced big block. 99% chance it is for a 360.




But which 360? The LA and the Magnum both have three shallow drilled holes.


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Re: Flywheel ID? [Re: John_Kunkel] #631578
03/06/10 01:21 AM
03/06/10 01:21 AM
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Bowie, MD
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Reggie Offline
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Here is a nice comparison pic of a Magnum 360 flywheel(L) and LA 360 flywheel(R) that someone posted here a while back. The LA balancing holes are larger diameter and a bit deeper. Sorry that I didn't save the poster's name with the pic.

Re: Flywheel ID? [Re: Reggie] #631579
03/06/10 11:06 AM
03/06/10 11:06 AM
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Carmel, NY
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ChrisR Offline OP
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The holes are about 1-1/4" across, and about 1/4" deep on the straight sides, if you don't count the "cone" from the tip of the dril bit.

It does look like the picture of the LA 360 shown in the post above. (just cleaner )

Re: Flywheel ID? [Re: ChrisR] #631580
03/06/10 04:04 PM
03/06/10 04:04 PM
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Carmel, NY
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ChrisR Offline OP
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This is a picture of the flywheel:
It does look a little different from the other two from a couple posts above.

5848894-DCP_0121.JPG (60 downloads)
Last edited by ChrisR; 03/06/10 04:05 PM.
Re: Flywheel ID? [Re: ChrisR] #631581
03/06/10 07:35 PM
03/06/10 07:35 PM
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ILLINOIS
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volaredon Offline
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does it have "notches on the back side that a crank sensor would be able to read off of?

Re: Flywheel ID? [Re: volaredon] #631582
03/08/10 10:30 AM
03/08/10 10:30 AM
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Carmel, NY
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ChrisR Offline OP
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Nope, no notches. I know this is an old part, not off something more modern.

5852050-DCP_0118.JPG (43 downloads)
Re: Flywheel ID? [Re: ChrisR] #631583
03/08/10 08:05 PM
03/08/10 08:05 PM
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Rio Linda, CA
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The size and the depth of the three holes determine if it's for a 360LA or a 360 Magnum. The 360LA holes are 1 13/64" in diameter, the Magnums are smaller.


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Re: Flywheel ID? [Re: John_Kunkel] #631584
03/11/10 02:45 PM
03/11/10 02:45 PM
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Carmel, NY
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ChrisR Offline OP
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So far it seems like it is an 360LA flywheel.
Now, how do I determine what the clutch size is? The spacing between the clutch mounting holes is 12-1/4". Could this be for a 12" clutch?

Re: Flywheel ID? [Re: ChrisR] #631585
03/12/10 01:09 AM
03/12/10 01:09 AM
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446acuda Offline
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It can use an 11" or 12" clutch (they both use the same bolt pattern just like the 10.5 and 10.95 on 130 tooth flywheels).

Re: Flywheel ID? [Re: 446acuda] #631586
03/12/10 12:40 PM
03/12/10 12:40 PM
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Carmel, NY
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ChrisR Offline OP
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So, just to make sure I've got this right, it will fit BOTH 11" and 12" clutches, right? It's not a case of either one could be bolted up, but one might not work right?
Just want to make sure.

Re: Flywheel ID? [Re: ChrisR] #631587
03/12/10 03:59 PM
03/12/10 03:59 PM
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moparmarks Offline
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My 72 W200 360 came with an 11" and now has a 12" Center Force so the answer is yes. Same with my 78 D300, put in a 12". Both have the same wheels as yours.


72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
Moparmarks Parts & Restorations
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Grand Jct. CO
970-261-7039
http://moparmark.com/
motormangj@gmail.com
Re: Flywheel ID? [Re: moparmarks] #631588
03/13/10 02:59 PM
03/13/10 02:59 PM
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Carmel, NY
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ChrisR Offline OP
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Thanks for all the help!

Re: Flywheel ID? [Re: Reggie] #631589
03/13/10 04:27 PM
03/13/10 04:27 PM
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Cincinnati, OH
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Quote:

Here is a nice comparison pic of a Magnum 360 flywheel(L) and LA 360 flywheel(R) that someone posted here a while back. The LA balancing holes are larger diameter and a bit deeper. Sorry that I didn't save the poster's name with the pic.




That is my pic... kind of cool it keeps showing up....


Re: Flywheel ID? [Re: ChrisR] #631590
03/13/10 04:29 PM
03/13/10 04:29 PM
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Cincinnati, OH
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Quote:

So far it seems like it is an 360LA flywheel.
Now, how do I determine what the clutch size is? The spacing between the clutch mounting holes is 12-1/4". Could this be for a 12" clutch?




count the number of teeth 143 for truck 11"/12", 130 for car 10.5" (you could use the 10.95 scalloped PP/clutch)

Re: Flywheel ID? [Re: 6T6Cuda] #631591
03/21/10 12:07 PM
03/21/10 12:07 PM
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Bowie, MD
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Quote:

Quote:

Here is a nice comparison pic of a Magnum 360 flywheel(L) and LA 360 flywheel(R) that someone posted here a while back. The LA balancing holes are larger diameter and a bit deeper. Sorry that I didn't save the poster's name with the pic.




That is my pic... kind of cool it keeps showing up....






Thanks 6T6! Great shot BTW. I will add your name to it.







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