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Message: [QUOTE="TyCorr, post: 1368688, member: 1451"] Official measurements are 2" and 3.69" on 99-04 superduty rear blocks. The 2" block isnt specific to the f250. Many f250 had a 3.69" rear block and overloads. Some ecsb trucks had 2" block and overloads. Only reason im saying anything is I just went through a research phase on suspensions and its a common belief 250s have 2" blocks and 350s have a 3 1/2 block. My 250 was apparently outfitted with a 3.69" block as built as my skyjacker kit had the stupid 2", 2.5° tapered block only sold for trucks with a 3.5" block that didnt want rake. After learning this i do remember when I picked it up the ass end being super high. I wish Id have kept or kept track of the darn block over the years as its 400 bucks for a set of factory blocks. Shti the stock trackbar bracket was over $200. I ordered a 3.5" block from pmf with tangs for an airbag setup and Im hoping its not too tall. The 4/1 stock rear leaves are pretty damn squishy. I incorrectly stated they were 3klb springs the other day. I believe they are 2660 ir something. So im sure it'll sag a bit as i put the bed and tool box on it. Well, i dont have the gn hitch on it either or the airbags. So the bag and hitch is another 150lb hanging on the frame back there. Edit: im doing soft rear springs, 3.5" tapered pmf block, Firestone 5klb airbags with Firestone wireless auto compressor, and pmf traction bars. The front is getting rough country replacement pack that is 3" taller than stock. Its also a fairly heavy spring rate compared to stock springs. [/QUOTE]

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