1997 - 2003 F-150

Spring Codes

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Old Dec 22, 2012 | 05:23 PM
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Spring Codes

I cant seem to find what the spring codes are. My brother has the spring code 4n and I have 6n. I know that 4 and 6 are for the torsion bars and n for the rear but what are their capacities?
 
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Old Dec 29, 2012 | 10:47 AM
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I guess nobody knows
 
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Old Dec 29, 2012 | 01:24 PM
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I get nothing. Well almost nothing, -I've seen them marked in that fashion off the production line, but that's about it. Why?
 
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Old Dec 30, 2012 | 09:54 PM
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I was looking at getting different leaf springs and wanted to know what the stock spring capacity was to see the difference between the stock springs and the ones I was going to get. That's when I saw that my brother had a different spring code so I was curious what the differences were
 
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