These are XLT blocks -- did FX2 come with taller ones? Dumb question, I guess -- these are blocks, right?

 

Those are blocks, but your truck is upside down.

 

Those are not blocks. Those are the spring perches on the axle. This truck option apparently did not come with any blocks. Most 2wd trucks do not have any blocks.

In the picture below you can see the blocks on top of the perch. Your's sits directly on the perch.




Sorry I can't answer your questions but perhaps someone else can.

A difference in height can occur with blocks or by having heavier springs (due to a trailer packages for instance) which have a bigger arch to them.

 

Yeah, that's good info, and our friend Summers said the same.

Yes, the 'truck' is upside down. I flipped it over to take the picture, of course! How else would you see the bottom?

So it would appear that XLT's have no blocks (heavy duty payload package unknown).

FX2's have 1.25" blocks (per Summers)
4x4's have 1.25" blocks as well (?)

And then there's an unknown with the 4x4 heavy duty payload setup.

 

I think you have your logic a little messed up. You need to look at this in terms of 2WD vs. 4WD, not package level. A 2WD XLT, would have no rear blocks, a 4WD does. My XLT sat as high as my FX4, both 4WD, both standard payload, and both have blocks. And as stated, the 1.25" you are seeing is the actual spring perch welded to the axle, not a block.

 

^^^A 2WD FX2 does have blocks, this is well known. I removed mine to get the rear to level, even after a 2" drop shackle. It is a package level deal.

 

Yeah I totally screwed that up.

2wd XL,XLT (Lariat, KR unknown): No blocks
2wd FX2: 1.25" blocks

4wd (all): 2" blocks

Addititionally, there are different u-bolts, u-bolt retaining plate, and u-bolt nuts for the heavy duty payload package across both 2wd and 4wd. Obviously, there are different leaf springs as well.

 

My 2013 fx2 has no blocks. I don't know if they forgot to put them on or what, I bought it new.

 

04-08 FX2 has blocks, I can't speak for 09-14.

 

You realize you are in the 04-08 section, correct?