ADD-A-LEAF SPRINGS

Discuss fixes, upgrades and modifications to your M37

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antpreson
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ADD-A-LEAF SPRINGS

Post by antpreson »

I am putting a 360 into my M-37. I want to add extra leaves on the front springs for the extra weight. Does anyone know of any bolt on kits out there that will fit the stock front springs?
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RMS
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Re: ADD-A-LEAF SPRINGS

Post by RMS »

wouldn't the 360 weigh less than the stock flathead ?
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antpreson
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Re: ADD-A-LEAF SPRINGS

Post by antpreson »

The weights I've seen say the 360 is about 200 lbs. more.
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Re: ADD-A-LEAF SPRINGS

Post by antpreson »

Well anyone?
skinnedknuckles
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Re: ADD-A-LEAF SPRINGS

Post by skinnedknuckles »

From my experience with add-a-leafs, I would stay away from them. Their spring rates are usually quite different than the factory spring leaves causing the originals to bend right at the point where the add-a-leaf end.
Paul in Janesville, Wisconsin
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Cal_Gary
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Re: ADD-A-LEAF SPRINGS

Post by Cal_Gary »

Well, adding a winch would add about 250 to the front, so if you're running a non-winch model, the 360's engine weight would be close to the 230 with winch, so the springs should support it. I know of no kits to add leaves; perhaps you could cannibalize some plates from an extra spring and add them.
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Re: ADD-A-LEAF SPRINGS

Post by T. Highway »

I would have to agree with Paul and Gary.

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antpreson
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Re: ADD-A-LEAF SPRINGS

Post by antpreson »

Thanks for the input guys. I already have a winch mounted. I reckon I'll have to find some old springs or some material from a spring shop.
52 M-42
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Re: ADD-A-LEAF SPRINGS

Post by 52 M-42 »

Years ago, (well, decades, actually :oops: ) Weyerhaeuser Logging Co. had a standard spring modification they used to do to the surplus M-37's they bought. I believe they added 1 to the front and 3 to the rear spring packs. We would see their trucks occasionally when they would sell them off (being a logging company, the trucks were pretty hammered).

I don't know how this worked out for them, but their trucks were pretty much off road all the time.

I may not even be remembering the number of leaves correctly; it was a long time ago............

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Re: ADD-A-LEAF SPRINGS

Post by DAP »

I have some extra leafs that you can cut and add. I think I added 3 per front side when I had the Hercules Deisel added. See thread at:

http://www.g741.org/PHPBB/viewtopic.php?f=5&t=4870
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