Bring a 250 up to 350 capacity? - Page 3 - Ford Powerstroke Diesel Forum
Suspension & Steering Discuss OEM & aftermarket suspension, lifts, air ride suspension, shocks, steering components, etc.

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post #21 of 31 Old 06-17-2019, 12:32 PM
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i was under the impression that F250 and F350(SRW) trucks are the same with the exception of the block height and the over load springs are standard on the 350 but optioned on the 250.

2011 + 250/350 have vacuum boost brakes

it is significantly cheaper to own a 250 with a 10K sticker than anything bigger in VA (tax, title, registration, prop tax, etc).


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post #22 of 31 Old 06-17-2019, 12:39 PM
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Originally Posted by powerstrokeshellback View Post
i was under the impression that F250 and F350(SRW) trucks are the same with the exception of the block height and the over load springs are standard on the 350 but optioned on the 250.

2011 + 250/350 have vacuum boost brakes

it is significantly cheaper to own a 250 with a 10K sticker than anything bigger in VA (tax, title, registration, prop tax, etc).

For the +17 lineup the rear axle is a significant change between the two "base" F250 and "base" F350 SRW trucks. Option the F250 correctly and the "hard parts" are going to be damn near identical with the limiting factor being a door sticker. Not to mention Ford allows an F350 SRW to be "stickered" with a 10k GWVR versus the 11.5k GVWR for the tax, title, registration, prop tax, etc issue for some reason.



In speaking of the door sticker the spring codes would be what I would want to compare between the trucks. The F250 with the F-250 TRAILER TOW PACKAGE Ė HIGH CAPACITY (535) may have the exact same FFRRcodes as a F350 SRW. I don't know specifically but it is what I would check.



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post #23 of 31 Old 06-17-2019, 12:41 PM
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For the +17 lineup the rear axle is a significant change between the two "base" F250 and "base" F350 SRW trucks. Option the F250 correctly and the "hard parts" are going to be damn near identical with the limiting factor being a door sticker. Not to mention Ford allows an F350 SRW to be "stickered" with a 10k GWVR versus the 11.5k GVWR for the tax, title, registration, prop tax, etc issue for some reason.



In speaking of the door sticker the spring codes would be what I would want to compare between the trucks. The F250 with the F-250 TRAILER TOW PACKAGE Ė HIGH CAPACITY (535) may have the exact same FFRRcodes as a F350 SRW. I don't know specifically but it is what I would check.
i missed his post about his being a 18.


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post #24 of 31 Old 06-17-2019, 12:50 PM
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Diesels use the hydroboost as diesels don't produce vacuum on it's own & especially vehicles with turbos don't produce vacuum. They actually have a vacuum pump that is used for the auto lockers and maybe?? A couple other things. I just did a PS job on a 7.3 f250 and I am about to do one on a buddy's 350. Everything is identical between the two diesels engine wise

As far as axles go there might be a difference, I am not sure but I can confirm 100% the f250 & f350 diesel does run on Hydroboost.

Not sure if you are only speaking of 7.3L motors or newer diesels as the OP stated he has a 2018 which is where we need to focus the discussion.



As ZMANN posted there is quite a bit of information by Ford and under the hood that says newer F250 diesels are a vacuum boost setup.
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post #25 of 31 Old 06-17-2019, 01:03 PM
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Okay here's two good examples that show both door stickers: GVWR stuff and Cargo weight for F250 trucks.



2019 King Ranch; No factory 5th wheel gooseneck kit: GVWR @10k, 2,157lbs cargo rating: Spring codes: TTJJ
https://www.autotrader.com/cars-for-...Type=spotlight


2019 Limited; Factory 5th wheel/gooseneck kit: GVWR @10k, 1,982lbs cargo rating: Spring codes: TTLL
https://www.autotrader.com/cars-for-...ckType=listing


The difference of 175lbs of cargo is due to the option packages between the trucks...I would argue more specifically the OEM 5th wheel/gooseneck hitch.


Then the rear spring code difference of JJ to LL: JJ will not have the top overload leaf compared to the LL which will have the top overload leaf.



While not pictured with these two examples one could find better examples surfing thru AutoTrader if their local dealer doesn't have a huge selection.
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post #26 of 31 Old 06-17-2019, 02:03 PM Thread Starter
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@ HeavyAssualt.. where do you find these spring codes? I can tell by a visual that my truck has the 4th spring, the overload some are calling it. It will come into play when the load causes a 3in squat. More specific of my truck.. its a Supercab, XLT 4x4, FX4, E rated Kevlar Wranglers. HCCP(535), with a lot of Lariat level options added. GVWR #9900. Cargo capacity, per door jamb sticker is #2375. GAWR rear is #6430. Cargo and rear axle numbers are on the high side, compared to most 250/2500 series diesels, as far as I can tell. To trade up to a 1 ton is not an option. Taking a bath on trade value, more insurance and registration fees are not happening. Hence, my original question of, can my current truck be brought to a higher capacity? Here in Ontario, the vehicle can be re-stickered to reflect changes made, but then the added fees come round eventually. Thx to all so far for responses/ideas/input. Great site, very informative!
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post #27 of 31 Old 06-17-2019, 02:42 PM
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This pic: Along the bottom; the last row of info at the end you see the title: SPR....under that is the code TTLL....TT (fronts) LL (rears)





You would have to understand what Canada uses as a procedure to validate/certify the new capacity. Most us "lower 48" cannot get them re-stickered/certified for higher GVWR over the factory certification sticker.



My honest suggestion would be to find some dual rear wheel rear springs, those would be the easiest to fit but not necessarily the cheapest in parts. Pull offs would be the best bet if you can find them with low miles. Maybe not worry about a new weight certification(??).



Maybe there's a local source that does leaf springs that can easily do an add-a-leaf or build you set to meet the Canada standards for certification to the higher GVWR.



Remember 2,375 lbs is over 1 ton.....not bad at all for a 9,900lb GVWR truck which sits at a 7,500lbs + curb weight. That's close to a 15k 5thwheel/ gooseneck trailer GVWR pin weight allowance at 15%.
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post #28 of 31 Old 06-18-2019, 07:56 AM Thread Starter
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Thx again Heavy.. found my spring code in exactly that spot. It's CCPP,lol. What does that mean? Truck is USA built, Kentucky plant
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post #29 of 31 Old 07-10-2019, 12:10 PM
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250/350 single wheel trucks come with the Sterling 10.5 rear end. The dually's get the Dana 80. I think that's right.

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post #30 of 31 Old 07-11-2019, 10:31 PM
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OP, do some research on autonation.com website or another Ford Parts website. I am actually looking at the opposite. I have a 14 Dually with a 14,000# spring package that I am looking at going lighter with. So far, in comparing spring part numbers online, it appears the same part numbers are showing up in 250 and 350 applications. You may find the same with a little research.

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