Here is my 2017 Transit with 2 inch lift and 32 inch tires. - Page 3 - Ford Transit USA Forum
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post #21 of 36 (permalink) Old 01-02-2017, 08:45:PM
klp
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As far as I know there is no change to any part of the drivetrain.

Picture the chassis/drivetrain as a rolling unit. Picture the body as a box that goes on top. If you put 2.5" spacers in between you've got the VC lift.

Sometimes you need longer shocks but VC claims the OEM parts are long enough. The only change to stock is the top of the strut housing is different to allow for proper alignment.
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post #22 of 36 (permalink) Old 01-02-2017, 09:09:PM
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As far as I know there is no change to any part of the drivetrain.

Picture the chassis/drivetrain as a rolling unit. Picture the body as a box that goes on top. If you put 2.5" spacers in between you've got the VC lift.

Sometimes you need longer shocks but VC claims the OEM parts are long enough. The only change to stock is the top of the strut housing is different to allow for proper alignment.
I don't think that is quite correct. Unless I missed something in the photos, it's basically a suspension mod -- making the suspension taller, to get the lift. But, the engine and most of the drive line is still in the "box". And, the rear axle clearance to ground does not change (assume no tire change). So... something would need to change, in the drive line -- rear shaft angle, most likely... but, I guess that could be accommodated by the normal arc of movement the rear axle would have.

Transit 250 Cargo MR LWB 3.5L w/3.31

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post #23 of 36 (permalink) Old 01-05-2017, 11:33:AM
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How much did the oversize tires hurt your fuel mileage?


Looks great!! Smitty

2015 Transit 250---148" MR---3.7 L
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post #24 of 36 (permalink) Old 01-07-2017, 10:13:PM Thread Starter
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I have not driven the van enough to really check mileage. In the last 100 miles it appears no worse than stock but I need to run a few tanks to be sure.

From my truck experience tire width is what kills mileage. The lift should hurt high speed mileage a little but the lower rpm's with the bigger tires may offset the increase. Now the engine thinks I have a 3.31 diff instead of the actual 3.73.

2017 Ingot Silver, Cargo, Medium roof, 148"WB, standard length. 3.5L Ecoboost.
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post #25 of 36 (permalink) Old 01-08-2017, 12:09:AM
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I have not driven the van enough to really check mileage. In the last 100 miles it appears no worse than stock but I need to run a few tanks to be sure.

From my truck experience tire width is what kills mileage. The lift should hurt high speed mileage a little but the lower rpm's with the bigger tires may offset the increase. Now the engine thinks I have a 3.31 diff instead of the actual 3.73.
You're going to need to take it to a dealer and have them adjust the PCM for the new tire sizes. If you don't, your shift points will be wrong and you'll risk transmission failure. I think they can go up to 33's but that's the max. FYI, the commonly referred to 35" tire is actually a 33.

2016 T250, MR, LWB, 3.5L EB, 3.73 LS, Sync, Tow Package.
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post #26 of 36 (permalink) Old 01-08-2017, 11:03:AM
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Hello! VanCompass lifted my '15 SWB LR for me a few weeks ago also. As stated above, the kit spaces the front suspension subframe away from the unibody and engine cradle. The steering is mounted to the suspension subframe so geometry is not changed. A nice billet 4130 steering shaft extension reconnects the steering column to the rack. The rear simply uses blocks between the axle and spring and longer shackles. The bump stops are also spaced down so the suspension travel is the same as stock. The drive line angle is slightly increased, but remains well within the normal operating angles of the u-joints.
As an engineer who has worked in high tech manufacturing for years I had no hesitations to these components being bolted to my "adventure van in progress".
I am running the BFG AT K02 235/85/16. They fit great with some minor trimming, which is typical in my experience building lifted and lowered trucks.

I did not have any luck at my dealership in reflashing the truck to 3.31 gear ratio to compensate for the big tires and 3.73 gears it actually has. They stated that they can no longer adjust these parameters as they could previously. Has anyone succeeded in this with a 2015 or newer?



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post #27 of 36 (permalink) Old 01-08-2017, 11:37:AM
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I did not have any luck at my dealership in reflashing the truck to 3.31 gear ratio to compensate for the big tires and 3.73 gears it actually has. They stated that they can no longer adjust these parameters as they could previously. Has anyone succeeded in this with a 2015 or newer?
Too bad on that, I wasn't sure if they could do it on the Vans or not. I know they can still do it on the 4WD F Series trucks.

2016 T250, MR, LWB, 3.5L EB, 3.73 LS, Sync, Tow Package.
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post #28 of 36 (permalink) Old 01-08-2017, 02:37:PM
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You're going to need to take it to a dealer and have them adjust the PCM for the new tire sizes. If you don't, your shift points will be wrong and you'll risk transmission failure.
I seriously doubt that 10% or so speed differential would result in transmission "failure." I have more confidence in my Transit than that. At the same time, it would not hurt to get the PCM adjusted, but so far I shall choose to roll the dice.

XLT wagon Silver/Charcoal, 2-12 Passenger (on any given day), alloy wheels, Ionic running boards, various modifications ongoing.
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post #29 of 36 (permalink) Old 01-08-2017, 02:46:PM Thread Starter
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Too bad on that, I wasn't sure if they could do it on the Vans or not. I know they can still do it on the 4WD F Series trucks.
I will find out this week. I am going in for an oil change and ask to set tire size. I know you can do it on a Ford truck. In fact Hypertech sells a cheap box just for reprogramming tire size on trucks. The problem is many dealers are aholes and refuse to help you so they make up lies.

2017 Ingot Silver, Cargo, Medium roof, 148"WB, standard length. 3.5L Ecoboost.
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post #30 of 36 (permalink) Old 01-08-2017, 03:06:PM
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Hypertech only lists a F 150.
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