Need a quick opinion, I am placing an order tomorrow. I leveled the front with a 1.5" AS level, and got about 2" of lift after alignment. Sitting a little too nose high for my liking so I am adding a block to get some rake back. I will be hauling a 4 wheeler around a bit but nothing too heavy (no heavy trailers). I am torn between stacking a 1" on top of my existing block or replacing everything with a 3" block. I am thinking the 3" might be a bit too much with my smallish level kit. Opinions wanted!

 

How tall is the stock block?

 

His stock blocks are 1 1/4" . The bummer about doing the blocks now, is that you may very well throw off your thrust angle when changing the blocks. It is easy to cause the thing to dog track a little. It is best to have the alignment checked again when you are done changing the rear blocks. If your steering wheel is off after the blocks are done, you can bet for sure that the thrust angle is out.

Sucks having to pay for 2 alignments.

As far as how high, I replaced my 1 1/4 with a 2" after adding bilstein 5100's. Have a look at my post https://www.f150online.com/forums/20...wn-blocks.html to see the results, and judge what you think would work for you. At this point, it might be a good idea to measure the back now, and then put your quad in it, and measure the drop. Take that number, and add 1 1/4" to it, and that should be the right number for your application. Otherwise, with the quad in it, you will be nose high, and headlights to the sky on the highway.

 

I wouldn't stack blocks. Just get the taller single block or do a zero rate spring.

 

Hey Fogducker, what size tires u have? Are those stock?

 

I am by no means suggesting you stack blocks.

What I meant was to take a measurement from the ground to the center of your wheel opening. Lets call it 40" for fun. Then load your Quad, and measure again. Lets call the second measurement 38" for fun.

40 - 38 = 2 inch change with quad loaded.

Add 1 1/4 (the width of the block you will be replacing)

In this example, 2 + 1 1/4 means you need a 3 1/4 block to replace your factory one with.

I'm assuming you plan on making it a habit of driving with your quad in. Maybe I shouldn't assume...... or so my father used to tell me.

 

Even with a taller block it won't change the spring rate. This should mean that loading a heavy load in the back is still going to make it drop the same amount. I have the same issue when I go camping and fill the back with gear. I am considering the super springs to rectify the droop problem under load. Others have gone with the air bag solution. The trade off though is that you loose a lot of articulation in your rear end even when unloaded. I have struggled with that problem since I do go on moderately difficult trails occasionally with my 07 where having good articulation is a help. Of course with the IFS front and the length my super crew isn't exactly Rubicon ready. My 78 will be a different story.

 

Tires are BFG AT 275/70/18 (33.2"), tons of great advice here, keep it coming

 

Thanks, they look great on the truck.

 

Thanks, I think for the look I am going for the 1" block will look best, only downside is that I will have to stack. Talked to a distributor and was told that stacking 2 small blocks is not a big deal, especially since they have the pins.

 

If you attach the 1" block to the spring stack with the center pins (aka a zero rate or a helper spring) then it really isn't stacking. The problem comes when somebody places two lift blocks between the spring pack and the spring perch loosely. That can be a recipe for disaster.

 

It's ordered after way too MUCH research, got a 1" Truxx block for $85 shipped.