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I have seen it in a Facebook group.
Thought it could be a good info for us guys here.
This upgrade is on my todo-list too.
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If anybody is curious on 6.7 steering box upgrade it is worth it but I will say it was a PITA if you don’t have a super fancy shop with super fancy high speed tools!! Everything you’d need parts wise I got on EBay. Once bolt holes are drilled out to fit bigger bolts it’s pretty much just plug and play after that. The feed lines will need some tweaking to clear everything and to actually fit properly don’t forget the o ring replacement. You can use the 6.7 upper lower steering shafts if you want I just went ahead with the borgeson upper lower steering shafts either one will connect right up to steering box and steering wheel just fine you’ll have to re align steering wheel after though because you can’t just pull steering shaft off and move it over a spline. Make sure to tap off the steering shaft seal from your old steering shaft, pretty easy to do just tap it onto your new shafts it’ll fit right through firewall. I highly recommend to tie your seatbelt around steering wheel so it doesn’t move and destroy your clock spring. Other then that overall it’s a big upgrade over stock box way beefier I have zero slop and drives like my newer truck!
Few things I recommend is a Vice grip if you’re manually torquing pitman arm nut or go buy a impact/air gun. Crows feet went a long way cause the angle for a normal adjustable wrench was an PITA. You’ll need a drill big enough to accept a 1/2 IN bit or get an adapter from home depot.
I decided to try a 17-19 steering box cause physically they look the same as any 2012-2016 box so figured it was the same if not maybe better? Make sure to get the non active steering version if you go with a 2017+ cause obviously our older trucks don’t have that haha!!
Parts:
*6.7 steering box
*3 M16x2.0x130mm bolts
*16mm drill bit (get it & adapter at Home Depot)
*46mm nut driver (it’s 3/4 drive so either get adapter or fork more money out)
*Borgeson upper/lower steering shafts 2012-2016
*power steering line seal
*pitman arm and nut (you can use original but it’s a pain I recommend new)
That’s pretty much it hit me up with any questions!
EDIT: what I meant by a Vice grip is the table mount Vice grip like the ones that bolt into a table or something not the cheesy hand holding Vice grips haha
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Link to FB post: https://www.facebook.com/groups/214329858727943/permalink/2166019343558975
So far, this is just a copy of the Facebook page. And what has not been addressed is if the '03 and '04 are a similar bolt-up for the pitman arm, which is a different part number than the'05-07 trucks.
So far, this is just a copy of the Facebook page. And what has not been addressed is if the '03 and '04 are a similar bolt-up for the pitman arm, which is a different part number than the'05-07 trucks.
Were different pitman arms used on the early and late 6.0?
Which makes me wonder: the guy orders a 17-19 gearbox, 08-16 lower and upper steering shaft, and 11-16 pitman arm (which obviously fits the newer gearbox).
Seems a lot of things fit beyond other years of manufacture .
My heavy camper doesn't steer as easily in idle as I would like.
Trucks with big wheels often don't steer at all in idle when not rolling.
Hence the search for a solution.
Whether the lighter steering by more pressure or a different gear ratio is made I do not know unfortunately.
Would it be easier and more cost effective to add an "assist" ram instead of all the to do of this project? I have one on my rock crawler made by HOWE and NOTHING stops those tires.
I too suffer from idle steering with 37" tires and I have considered the ram assist.....but that is on the bottom of the to do list.
The later steering gearbox has a higher internal power boost ratio (worm and sector are the same ratio), so it puts a higher force on the knuckles for turning. No increase in power steering pump pressure, the box outputs more like a larger diameter piston on a hydraulic ram.
The linkage is different between the different suspensions, while this modification has been documented on Facebook and PS.org, it's been about the 2005+ vehicles only from what I've seen.
My problem is the annual technical inspection of our trucks. No inspector will notice a 6.7 conversion. The additional cylinder sees a blind....therefore the idea with the upgrade to 6.7.
The later steering gearbox has a higher internal power boost ratio (worm and sector are the same ratio), so it puts a higher force on the knuckles for turning. No increase in power steering pump pressure, the box outputs more like a larger diameter piston on a hydraulic ram.
The linkage is different between the different suspensions, while this modification has been documented on Facebook and PS.org, it's been about the 2005+ vehicles only from what I've seen.
Do you know if the only difference between the pitman arms is the shape? If the connections/bores (the splines and the tapered bore) matched, the only difference in the upgrade would be the pitman arm.
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