Advantages/Disadvantages of longer shackles - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 01-04-2005, 11:09 AM   #1 (permalink)
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Advantages/Disadvantages of longer shackles

Ok I have a SFA S10 blazer and Im using chevy rear shackles up front upside down. So I was thinking of buying 3 inch longer "lowering" shackles which would actually lift a slight bit because mine are upside down and because I hear longer shackles articulate better. You guys think its a good idea???
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Old 01-04-2005, 11:17 AM   #2 (permalink)
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the only problem i see with longer shackles is if there "thin" and not gusseted they will bend sideways. for example take a 3" piece of steel and put one end in a vice and see how far you can bend it. now try this with a piece 6" long.



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Old 01-04-2005, 12:03 PM   #3 (permalink)
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It will change your steering geometry (caster) a bit if you just add the longer shackles and do nothing else.
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Old 01-04-2005, 12:05 PM   #4 (permalink)
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Some of the guys I run with use those in the rear after a shackle filp. I can't count how many times they have crushed, collapsed, torn, or just plain broke. I killed my stock ones also and mad a set using 1.5x1/4" flat stock and rienfroced the center so it looks like an ' A ' haven't had a problem yet. The jeep cherokees have a lift shackle that is 2x3/8" flat stock and should bolt right in.
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Old 01-04-2005, 12:45 PM   #5 (permalink)
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as long as they are built correctly and kept at a reasonable angle, they should be fine.
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Old 01-04-2005, 12:52 PM   #6 (permalink)
 
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3" longer will really throw your caster out of wack, but yes a longer shackle will usually give you more flex. The exception is if you have flat or nearly flat springs you probably won't notice anything
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