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Leaf Spring Help

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Old Jan 18, 2012 | 09:38 PM
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Leaf Spring Help

Hi I'm currently restoring my dad's 79 f150 4x4 and I just removed the axle and leaf springs. I was hoping if someone could help me identify what kinda of springs they are. From the searching I have done my guess is that they are stock springs with an overload spring and I'm assuming that the block under the springs are used to give the truck a lift. If someone can confirm this or point me in the right direction it would greatly be appreciated.



 
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Old Jan 18, 2012 | 10:00 PM
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The block is stock but not sure about the helper springs.
 
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Old Jan 21, 2012 | 12:52 AM
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Ok cool thanks. I wasn't sure if I had seen those blocks on other trucks. Does anyone have any info on the leaf springs?
 
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Old Jan 21, 2012 | 06:17 AM
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The helpers are add-on....IIRC factory overload springs are captured under the same U-bolt plate as the stock springs and don't have those u-bolts out on the ends.
 
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Old Jan 24, 2012 | 10:42 PM
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Originally Posted by FineSeventyNine
The helpers are add-on....IIRC factory overload springs are captured under the same U-bolt plate as the stock springs and don't have those u-bolts out on the ends.
I have looked at some more pictures of overload springs and I see what your talking about. Am I wrong to assume that these function simliar to overload springs by providing support. I always thought the truck had a small lift but wasnt sure if it was a lift or the 35" tires. Could the helpers provide a small lift? Anyone else have any more information.
 
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Old Jan 24, 2012 | 10:52 PM
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that short spring on the bottom is like a main overload, a lot of people stack those in for lifts but usually just blocks. i doubt those addon helpers would lift it much at all. another lift option is adjustable shackles
 
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Old Jan 24, 2012 | 10:58 PM
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The aftermarket overloads do help with heavy loads... but really hurt the ride empty or with light loads.
 
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