74 front springs

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LMJ20
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74 front springs

Post by LMJ20 »

So lucky me I have a 74 which has the odd ball short front springs that I think are right around 45”. The springs I currently have are pretty much flat. I found these and I’m pretty sure they are the correct fit. I was just wondering what the stock arch was and what the stock spring weight rating was.? Thanks
https://www.truckspring.com/leaf-spring ... rings.aspx


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tgreese
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Re: 74 front springs

Post by tgreese »

Isn't '74 the changeover year where the rears are the earlier post mount type and the fronts are the later design? The parts book shows a unique part number for the '74 fronts, but instructs you to order the springs for a '76 and separate bushings. So I expect the bushings will be wrong, but the spring length, width and arch will be the same as '76 and later. What's the model (J20 I presume) and GVWR rating? Matters. '74 has a 2-leaf light and a 2-leaf heavy, which both are replaced by the 2-leaf heavy for 1976.

Your link points to a generic sizing diagram for leaf springs, not a specific spring.
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Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
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LMJ20
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Re: 74 front springs

Post by LMJ20 »

That’s kind of weird that the link didn’t work, here it is again.
https://www.truckspring.com/products/tr ... 7-372.aspx

The current truck I’m looking for front springs for is a J10.
It dose have the old post mount style in the rear.


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LMJ20
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Re: 74 front springs

Post by LMJ20 »

If these will fit my rig, will they give the truck some lift? The arch says it is 6 3/4”. That seems quite a lot from the flat springs I have now.


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orionstarsin
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Re: 74 front springs

Post by orionstarsin »

I just went thru all this on my 74 J10. According to these two topics i found on ifsja they should work.

http://www.ifsja.org/forums/vb/showthread.php?t=171321

http://ifsja.org/forums/vb/showthread.php?t=66430

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orionstarsin
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Re: 74 front springs

Post by orionstarsin »

Or you could get them on Bj's offroad for $65 dollars less.

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LMJ20
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74 front springs

Post by LMJ20 »

So from what I’m seeing, the front springs are all pretty much the 22 1/2 X 24 1/2 all the way up into the vehicles past 1976. It’s the rear springs that change with the different years and different wheel bases.
So in theory if you already had plans to do away with the post style spring hanger and replace it with a more modern spring hanger. Then You could order a full lift kit for a 76+ rig and just weld in the spring hangers in the correct location to center up my axle.
Or am I missing somethingImage
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Stuka
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Re: 74 front springs

Post by Stuka »

Yes, 74+ front springs are the same. But 75- rear are post mount, and 76+ rear are box mount.

EDIT: Forgot to add 'rear'.
2017 JKU Rubicon
Pevious Jeeps: 1981 J10, 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ
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LMJ20
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Re: 74 front springs

Post by LMJ20 »

Stuka wrote:Yes, 74+ front springs are the same. But 75- are post mount, and 76+ are box mount.
Sweet! Now I’m kind of excited. This opens up a lot more options
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Stuka
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Re: 74 front springs

Post by Stuka »

LMJ20 wrote:
Stuka wrote:Yes, 74+ front springs are the same. But 75- are post mount, and 76+ are box mount.
Sweet! Now I’m kind of excited. This opens up a lot more options
Fixed a missing word in my post. The second bit was referencing the rear springs.
2017 JKU Rubicon
Pevious Jeeps: 1981 J10, 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ
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