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Old 10-18-2011, 03:59 PM
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Tigger4X Tigger4X is offline
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Lightbulb Post mount suspension - need input on conversion ideas

HOLY OLD THREADS BATMAN! 8 years and counting . . .

I have now been waiting almost 3 months for a member on here to get back to me on the 4" all spring lift he has for sale; just waiting on an address to send payment to get 'em shipped. Even after installing them I'm not sure if I will be getting enough lift out of them to fit 35" BFGs and not have issues at articulation.


To start off this is going to be on my '74 J-10 that is currently running a 360/TH400/QT. I might swap out the Quadratrac for a Dana20 and the stock axles for an HD44 / 14 Bolt combo. Neither of these should really affect the amount of suspension lift, at least not by anything of consequence.

In my early stages of frustration I inquired, in another thread, about removing the current leaf spring mounts, front and rear, and installing the newer style which would greatly open up my choices of lift kits as well as reduce the cost of lifts available. I didnt get a whole lot of input and then I had this wingdinger of an idea hit me ...

What about cutting the current post mount off, fabbing up a box mount with a new post on it so its "X" inches lower than stock, and welding it onto the frame with gussets for strength? Of course I'd have to do the same with the rearward rear spring mount and pair up front as well to match the rear lift. I figure this would give me "X" amount of lift which could be used with or without a spring lift. It would also give me the option of upgrading my 1/2 ton J-10 springs to stock 3/4 ton J-20 springs.

This library computer doesnt have the "paint" program on it nor does it allow me to save anything I create so I can upload it here so I'll have to get creative and find a way to post up some crude drawings of my ideas, but please offer up any thoughts you might have on this hair brained ideas ... pros ... cons ... etc.


Thanks



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Post #14 ~ http://www.ifsja.org/forums/vb/showt...=1#post1580206

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Old 01-06-2020, 03:03 PM
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Tigger4X Tigger4X is offline
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Question

It almost feels like I just posted this and here I am 8+ years later with bastard pack springs that arent cutting the mustard. BJs recently started selling true J20 gvwr spring kits, but only for '76 and up. They sell front and rear individually, but I dont want to run new fronts and these ghetto packs with a J10 main.

Has anyone come up with a way to easily get rid of the post mount? Any home grown kits?

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Post #14 ~ http://www.ifsja.org/forums/vb/showt...=1#post1580206
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Old 01-09-2020, 07:52 AM
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bkilby bkilby is offline
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Can't help on the post removal but Atlas Suspension has springs for you.
http://www.mcssl.com/store/atlassusp...-series-pickup
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Old 01-10-2020, 10:36 AM
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I thought the >73 front springs were narrower than the 74>?
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Old 01-11-2020, 08:08 PM
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KaiserMan KaiserMan is offline
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Quote:
Originally Posted by gophman
I thought the >73 front springs were narrower than the 74>?


They are. 2" mounted SOA vs 2.5" mounted SUA.


The easiest way to swap out your post mounts is to use the complete 74+ style suspension. But they you need to swap to SUA or deal with a lot of lift.


Easier in the long run to just have a pair of new spring packs built to your specs.
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Old 01-17-2020, 02:04 PM
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Quote:
Originally Posted by bkilby
Can't help on the post removal but Atlas Suspension has springs for you.
http://www.mcssl.com/store/atlassusp...-series-pickup


Maybe I'm doing something wrong, but each option I looked at comes up $0 even when added to my "Cart". It looks like they don't sell them any more. IF they do will the J20 springs actually have the J20 GVWR.
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Keep in mind. Getting old is easy. Being old is hard.
Post #14 ~ http://www.ifsja.org/forums/vb/showt...=1#post1580206
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Old 01-17-2020, 02:07 PM
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Quote:
Originally Posted by gophman
I thought the >73 front springs were narrower than the 74>?


'73 springs are post mount front AND rear. I have a '74 that are post mount rear only, and I'm trying to eliminate the post mount all together.
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Originally Posted by will e
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Old 01-17-2020, 02:18 PM
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Tigger4X Tigger4X is offline
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Quote:
Originally Posted by KaiserMan
. . .

The easiest way to swap out your post mounts is to use the complete 74+ style suspension. But they you need to swap to SUA or deal with a lot of lift.


Easier in the long run to just have a pair of new spring packs built to your specs.

Use the complete '74+ style suspension? '74 & '75 are both post mount rear springs. Did you mean '76+


Custom spring packs are crazy spendy which is why I came here looking for ways to swap out the mount styles.
So far the only affordable spring option is "off the shelf" from BJs that has the true J20 GVWR ... BUT ... it is only available for '76+ and my rig is a '74. In order to run those springs I need to remove the post mount and change it to the newer box style mount for '76+.
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