Take those part #s to any dealer or for a better deal price em from one of the online sponsors of this website. Should run about $130 + shipping for the ubolts, blocks, and nuts.

 

riggz: Great writeup and pics.. Glad someone finally did it.

Keep in mind there are tapered and non-tapered blocks. I'd like to see you add a note to the part numbers indicating that there are deffinitely two different blocks and you need to determine which ones your truck needs. As fas as I know, SC SHort box and shorter trucks use tapers. CC short box and longer use non-tapered. But I'm not 100% sure of that.

-Jay

 

super cab long box use the non-tapered blocks... anyone have some F-350 blocks lying around that are tapered that they want to get rid of? my truck rides about 1" higher in front...

Joey

 

Why change the shocks out? Did you put longer ones in?

 

I believe you are correct. If someone wants to post up the part #s to confirm it maybe we can get a mod to edit my post.


The shocks I put in are indeed longer, but you don't "have" to put longer ones in. The main reason I did was to improve the ride quality.

 

Provided by akford351 prior to my F350 block install:

Since you have a SC/shortbox you need the tapered blocks:
F81Z-5598-FA and F81Z-5598-GA not sure which are right/left...
Ubolts: 5C3Z-5705-AA
Nuts: N620485-S441

Note that there ARE left and right tapered blocks.

-Jay

 

CyberJay, do you recall how the tapered blocks are installed? If you could snap a picture, we could have it added.

Here's what I've come up with to add:

If you have one of the following:
Crew Cab Short Bed (156" Wheelbase)
Super Cab Long Bed (158" Wheelbase)
Crew Cab Long Bed (172" Wheelbase)

Then use these part #s:
Blocks: F81Z5598DA x 2
U-Bolts: N803770S436 x 4
Nuts: N620485S441 x 8 (You can reuse the old nuts if you wish.)


If you have one of the following:
Super Cab Short Bed (142" Wheelbase)
Regular Cab Long Bed (137" Wheelbase)

Then use these part #s:
Left Tapered Block: F81Z5598FA x 1
Right Tapered Block: F81Z5598GA x 1
U-bolts: 5C3Z5705AA x 4
Nuts: N620485S441 x 8 (You can reuse the old nuts if you wish.)

 

do not install lift blocks in the front

 

I can snap a pic in a couple of days, I need to rotate my tires so I could take a pretty good pic with the wheel off. Installation is exactly as the pics you posted, but you need to be sure the left block goes on the left and the right block goes on the right, that's all.

-Jay

 

Right, but is there a direction as to which side goes forward?

 

I checked on an F350 OBS we had at the shop and the blocks measured an even 4 inches.

 

small side of tapered block faces front of truck

 

Thanks KubotaOrange76! I'll have a mod edit the original post now.

 

Riggz, Great write-up. I did the same swap on my 2003 SD 6.0 CC SB. I used the same part numbers you list. The only thing I would question is the part number for the U-bolts when using the tapered blocks. By mistake I ended up with the 5C3Z5705AA U-bolts, they had to large of a bend (to wide) to fit my axle housing and would not easily slide though the holes in the top plate. They are the correct length although. I'm not sure why the U-bolts would have to be different between the tapered blocks and the flat blocks. I believe the block length is almost the same except for the few degrees of taper. It could be 5C3Z5705AA U-bolts are for the 2005-7 years, with the bigger brakes and load capacity. They may have increased the axle housing diameter. Maybe some else could help out here????

One other number I used for the carrier bearing, was for the Ford shim kit comes with three shims 1/4" each, EOTZ4A209A. I used one of the shims and reused my two bolts with locktite. If you need to use more than one you will need longer bolts. I checked with my local Ford dealer and he said the 250 and 350 use the same bolt. It did not make sense but I did not pursue.

Hope this helps.

 

pm me if you want mine....