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Excursion 06 Axle & Coil Swap Build
Looking for experienced feedback for my build …
Using a 06 F-250 6.0 roller for both axles and front suspension
My goals 1) Minimal lift (2-3”) so wife and grandkids can get in. If possible… 2) Using OEM F-250 18” wheels with 35” tires 3) 10k Tow capacity for toy hauler 4) Smoother ride on gravel roads and the rough Pennsylvania pothole roads.
Current plan is to: 1) New OEM front spring buckets 2) PMF control arm brackets 3) 99-04 Mod B rear leaf springs 4) Fox correct valve shocks 5) PMF adjustable track bar 6) Reinstall the air bags that are on now. 7) Later re-gear to 4:88
My questions: 1) Are the stock f-250 6.0 coil springs the correct spring rate 2) How much lift will I get with coil swap 3) Who / where to purchase correct fox shocks to use 4) Should I use the 06 steering gearbox 5) Any benefit using a different leaf springs to avoid with using blocks
6) Use stock or drop PMF control arm brackets
7) Alignment specs to use
I definitely recommend reading the other threads but I’ll try to answer
1. The 6.0 is heavier than the 7.3 and any gasser, I’ve got level springs for mine with a 7.3 and it rides just fine to me.
2. If just using Factory Ford springs 2-3 of lift since you’re going from excursion to pickup suspension
3. I bought my Fox shocks from PMF
4. Yes, the 06 gearbox has More arm throw to take advantage of the better steering angles
5. Less potential for axle wrap without block and more available spring travel.
6. Stock control arm brackets are fine, you only need the drop ones if lifting
7. The align,ent specs I can’t remember off hand, I used the factory cam with the top balljoints and PMF adjustable arms so I set my camber? with that, toe in I set at 1/8-3/16 of an inch I think. Probably should have it actually aligned but so far only slight weird tire wear with no handling issues.
What engine do you have, curious since 4.88 gears are pretty deep for 35s?
I definitely recommend reading the other threads but I’ll try to answer
1. The 6.0 is heavier than the 7.3 and any gasser, I’ve got level springs for mine with a 7.3 and it rides just fine to me.
2. If just using Factory Ford springs 2-3 of lift since you’re going from excursion to pickup suspension
3. I bought my Fox shocks from PMF
4. Yes, the 06 gearbox has More arm throw to take advantage of the better steering angles
5. Less potential for axle wrap without block and more available spring travel.
6. Stock control arm brackets are fine, you only need the drop ones if lifting
7. The align,ent specs I can’t remember off hand, I used the factory cam with the top balljoints and PMF adjustable arms so I set my camber? with that, toe in I set at 1/8-3/16 of an inch I think. Probably should have it actually aligned but so far only slight weird tire wear with no handling issues.
What engine do you have, curious since 4.88 gears are pretty deep for 35s?
Thanks … I have a V10 so the 6.0 coil spring rate might be to heavy, after more reading I am leaning towards Procomp rear leafs with and no blocks. Did PMF have Excursion specific valved shocks ?
What engine do you have, curious since 4.88 gears are pretty deep for 35s?
Since he is building a V-10 tow rig for a 10K trailer those deep 4.88s are the perfect gears for 35"s, same as my setup that equals an effective 4.39 ratio which hauls our 12K TT pretty well.
Excursion 06 Axle & Coil Swap Build
Looking for experienced feedback for my build …
Using a 06 F-250 6.0 roller for both axles and front suspension
My goals 1) Minimal lift (2-3”) so wife and grandkids can get in. If possible… 2) Using OEM F-250 18” wheels with 35” tires 3) 10k Tow capacity for toy hauler 4) Smoother ride on gravel roads and the rough Pennsylvania pothole roads.
Current plan is to: 1) New OEM front spring buckets 2) PMF control arm brackets 3) 99-04 Mod B rear leaf springs 4) Fox correct valve shocks 5) PMF adjustable track bar 6) Reinstall the air bags that are on now. 7) Later re-gear to 4:88
My questions: 1) Are the stock f-250 6.0 coil springs the correct spring rate 2) How much lift will I get with coil swap 3) Who / where to purchase correct fox shocks to use 4) Should I use the 06 steering gearbox 5) Any benefit using a different leaf springs to avoid with using blocks
6) Use stock or drop PMF control arm brackets
7) Alignment specs to use
Thanks in advance for feedback …
1. are they the correct spring rate ? unknown to me for certain but my guess is that would acheive your desired 2-3" lift. if you have the spring rate for your coil and know the 7.3 and 6.0 weights we can do some simple math and get pretty close to the mark. but my hunch is that it will sit pretty much the same height as the F250 did from hub to fender.
2. see #1
3. Correct shock valving will always be a subjective thing but your Goals while admirable are at odds with each other.
the shocks job is to control the speed at which the suspension can move by absorbing energy. if you want to suck up pot holes at cruising speed then you need to absorb alot of energy and to do that you need stiffer valving, in a very simplistic sense this is the oppisite of the setup for an "smooth" ride, that highway cadallic floating ride is acheived by less valving. As such the never ending compromise cycle begins as technology races to deliver your desired results. there is no single perfect answer.
4. yes
5. yes
6. stock height i would use stock track bar mounts.
7. 5.5* + caster. camber 0* .03* + toe in. is my prefered setup
related question, i have a 2WD V10 that the front end is already coil spring, would a 2006 ish front axle go in without changing the buckets, and a lot of other stuff?
Just got done building this one, so I'll answer what I can, if you have any other questions I'll try my best to answer. I've done a few of these now..
1) Are the stock f-250 6.0 coil springs the correct spring rate
-Yes, they will work totally fine for your v10. 2) How much lift will I get with coil swap
I get 2" of lift using factory components. I use the EX springs, with the F250 blocks, although if you're changing springs to stiffer springs, you likely will not need the blocks at all. 3) Who / where to purchase correct fox shocks to use
I highly recommend PMF, I live not far from their facility, the owner is a stand up guy who always stands behind his products and service. 4) Should I use the 06 steering gearbox
Yes, you absolutely should use the 06 gearbox, it makes it significant less work in the long run. You have to use one of the donor power steering lines, and you'll need to ream the bolt holes in the frame slightly bigger and order a few bolts from fastenal. You can also go with an even beefier 11-16 box... which is also slightly more work. 5) Any benefit using a different leaf springs to avoid with using blocks
Less axle wrap, more travel, but honestly for your average application, it won't make a difference that you'll never notice.
6) Use stock or drop PMF control arm brackets
If you want a 2" lift from your current height - you will achieve that increase with the suspension swap alone. I use the radius arm brackets and all stock components. You do not need an adjustable track bar if you're running it with the stock 06 components.
7) Alignment specs to use
I just let the shop do it for me, if they say it's straight, it's straight, alignments are not my cup of tea.
related question, i have a 2WD V10 that the front end is already coil spring, would a 2006 ish front axle go in without changing the buckets, and a lot of other stuff?
No, the coil buckets are different, you'll need to change more than if you had swapped from a 4x4, as you also have to change over the transmission output shaft, add a transfer case, drive shafts, etc.
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