Are my stock U bolts long enough for 1'' lift blocks?

[2004F250XLT]

I have an 04 f250 psd with a 2'' leveling kit but now i want to add an inch of lift in the back. Can i add 1'' lift blocks in the rear using the stock equipment? Thanks

heres a link
99-04 FORD F350 4x4 1" Rear Lift Blocks | eBay

[jetjock15]

dude, you just look on top of the spring, is there at least an inch of available thread? In any case, just be advised Ubolts are "not re-usable" by spec. Many people have re-used them without issues, but they are built to be torqued one time in one direction. Such an important part of the driveterrain and under huge loads, probably worth the $50 bucks to upgrade. Also if your going to start to run tall block/s probably worth upgrading to 5/8th Ubolts also, much stronger.

[lhsnbsaoa]

i definitely agree with jetjock15, dont reuse them, they are cheap enough to get new ones. i actually got two sets with my lift kit just in case i needed an extra. if you wait a couple weeks till after i do my lift i could sell you my extra set because i probably wont need them.

[xjeeper]

I did it on my 04, The U- bolts that are not reuseable are the aftermarket kind with cut thread that actually deform slightly to help hold the torque, they have cut threads. Some U bolts are reuseable, such as oem toyota bolts that are forged. Most OEM Ford bolts fall somewhere in the middle, they do not have cut threads, but they are not forged. I managed a 4x4 shop that custom bent u-bolts, as well as sold most brands of pree bent. You can reuse the Ford bolts as long as the nut is torqued on a "virgin" part of the threads. The aftermarket bolts for the rear of the superduties are usually larger in diameter than the oem bolts, but I do not know if they are any stronger, due to variances in the metal from which they were formed. I would reuse acut thread U- bolt only if the thread where the nuts will fall is "virgin", and , replaceing the nuts with new hardware that has never been torqued. the same rules apply to spring center pins.

[PGreenSVT]

Don't stack blocks. Buy new single blocks in the correct height.