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12 inch clutch

Old 01-20-2019, 02:55 AM
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12 inch clutch

Is there a flywheel that will except a 12 inch clutch for my 91 w250 5.9 gas np 435 transmission. I've been told that the magnum engines flywheels excerpts 12 inch clutches but they are balanced different the my LA 360 in my 91.
Old 01-20-2019, 07:30 AM
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Magnum and LA flywheels are balanced differentially.
The LA 360 are not internally balanced and rely on the flywheel for final balancing.
The LA 360's flywheels have three holes a bit smaller than the size of a quarter drilled partially into the back of the flywheels.
Old 01-20-2019, 10:37 AM
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Does anybody know of a flywheel that will except a 12 inch clutch that will w o to on my 91 dodge w250. 5.9 gas np 435 transmission . ?
Old 01-20-2019, 01:13 PM
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If I had that question, I would got to a clutch / flywheel manufactures website and check it out.
South Bend clutch for diesel truck knows their stuff and sells clutch and flywheels as a matched set.

Or maybe ask on one of the forums that deals with Gassers more.

I can not remember the size of the clutch I put on my '72 Power Wagon about 20 year ago off the top of my head.
Old 01-20-2019, 02:51 PM
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Originally Posted by oliver foster
If I had that question, I would got to a clutch / flywheel manufactures website and check it out.

Or maybe ask on one of the forums that deals with Gassers more.

I can not remember the size of the clutch I put on my '72 Power Wagon about 20 year ago off the top of my head.

The interwebs are a heck of good tool. If you know how to approach it correctly

Pretty sure I had an 11 inch clutch in my 76 W100 with a spark impaired ignition small block.
Old 01-20-2019, 03:37 PM
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I put a 13 inch clutch and pressure plate from Rock Auto in my truck when I replaced the trans. I also replaced the flywheel. I wish I had thought of it and replaced the rear main seal. It doesn't leak though. The clutch is really smooth and actually requires less pressure to depress the pedal. Doesn't slip though I haven't pulled anything heavy with it. The clutch came with a new throwout bearing also.

Edwin
Old 01-20-2019, 03:44 PM
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Originally Posted by edwinsmith
I put a 13 inch clutch and pressure plate from Rock Auto in my truck when I replaced the trans. I also replaced the flywheel. I wish I had thought of it and replaced the rear main seal. It doesn't leak though. The clutch is really smooth and actually requires less pressure to depress the pedal. Doesn't slip though I haven't pulled anything heavy with it. The clutch came with a new throwout bearing also.

Edwin
He is asking about a flywheel / clutch for a 5.9L 360 LA V-8 Gasser he is working on.
Old 01-20-2019, 05:24 PM
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Originally Posted by oliver foster
He is asking about a flywheel / clutch for a 5.9L 360 LA V-8 Gasser he is working on.
OOPS! How silly of me.
Old 01-21-2019, 02:09 AM
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I just had a 92 apart with an NV 4500 it was 12 in clutch . My 79 that was a 360 , with a 435 was a 12 in also but it was drilled for an 11 in also. You may look closely at your flywheel for dual pattern drilling . I did not know 12 in clutch was hard to locate on a gasser . I tossed a couple of flywheels in the scrap that were still very usable .
Old 01-21-2019, 04:43 PM
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Is everybody measuring the same thing? i.e. the diameter of the clutch disc itself?

I thought the LA clutch sizes were 10" or 11".
Old 01-21-2019, 05:49 PM
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Originally Posted by BHD
The interwebs are a heck of good tool. If you know how to approach it correctly

Pretty sure I had an 11 inch clutch in my 76 W100 with a spark impaired ignition small block.
I guess I don't know how to approach it correctly , the reason I went to the diesel forums was because I had problems figuring out how to login , now that I have finally managed to login correctly to this site I will try to get on to one that is more towards answering GASSER questions , but thanks for you taking the time to answer my questions
Old 01-21-2019, 06:44 PM
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I just googled Dodge 318 12 in. Clutch . First thing that popped up was AutoZone , 12in 1 in x 23 spline , diaphragm cover and throw out bearing kit . I used the Borg and Beck style in mine . That means nothing the 12 in clutch is there I have installed a few .
Old 01-21-2019, 07:21 PM
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Originally Posted by Scottchand57
I guess I don't know how to approach it correctly , the reason I went to the diesel forums was because I had problems figuring out how to login , now that I have finally managed to login correctly to this site I will try to get on to one that is more towards answering GASSER questions , but thanks for you taking the time to answer my questions
This is a good group to belong to. Some of the same issues will pertain to your ride, and you are welcome to ask away as far as I am concerned. I'm happy to help anyone that has the ambition to keep these old trucks on the road. You may have to endure a few jokes about spark plugs though.

RamCharger Central may offer you more specific answers when it comes to the gas engine stuff. The forums are not as busy as this one, so it may take a little while for a reply.

Anyways, good luck.
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Old 01-21-2019, 08:11 PM
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Originally Posted by death row dave
I just had a 92 apart with an NV 4500 it was 12 in clutch . My 79 that was a 360 , with a 435 was a 12 in also but it was drilled for an 11 in also. You may look closely at your flywheel for dual pattern drilling . I did not know 12 in clutch was hard to locate on a gasser . I tossed a couple of flywheels in the scrap that were still very usable .
I guess
Old 01-21-2019, 08:17 PM
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Originally Posted by Scottchand57
I guess
Was the 92 a magnum motor. ? Because on of the problems I'm having is the the magnums are balanced different then the older small blocks. My current set up I'm installing is a diesel NV 4500 with a gas 10 spline input shaft . That's what Laurie said at High Impact .The place I got the nv4500 from for the conversion im ATTEMPTING. Thanks for any help it's very much appreciated .

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