Recently bought a 2004 6-window E-450 based Collins. This thing sat really low, especially in the front... apparently to allow easy entrance for passengers and such. My mission is to turn this bus into a back-road capable expedition/camping rig, so I need to get it up out of the dirt. I plan to install 32" A/T tires, so a small suspension lift is in order.
I went looking for components to make this happen, and found almost nothing available specifically for E-450. So I bought what I thought I could adapt and made the rest.
On the front I started with a leveling kit made for 2WD F350: Ford F250 F350 Super Duty 2WD 2" 2 0" Leveling Lift Kit FB2 | eBay
To adapt this kit to the bus required purchase of a pair of 20mm x 200mm grade 8 bolts (course thread),4 washers, and a pair of 18mm locking nuts. I Also needed a 20mm x 2.5 tap...which I just happened to have laying around.
This big 20mm bolt replaces the factory bolt that fastens the longitudinal radius arm to the I-beam axle. It goes in from the bottom and the factory 20mm nut goes on top. The stud extenders screw down on top of that nut, then the aluminum spacers sit down over the stud extenders. A washer & 18mm nut on top of the stud extenders fasten the spacers down. Stud extender thread is 18mm, so I had to run a 20mm tap down the internal threads to hog it out to 20mm. Thread pitch is the same for 18 & 20, so it worked just fine.
This leveling kit is advertised as 2" lift, but I gained at least 3". Wheel alignment will now be necessary to correct camber. Factory shocks seem long enough to accommodate this lift.