Same front springs? F350 7.3 vs 6.7

[OffroadMainer]

Anyone know if the factory front springs on the 2021 F350 Tremors are the same on the 7.3 builds as they are on the 6.7's?
I'm purchasing a 7.3 gasser and intend to put on a Buckstop classic bumper + a winch + front spare tire (~425 lbs total), in conjunction with a 2,500 lb Northstar 6.5' pop-up camper in the bed. Would like to know what I'm getting into as far as balancing out the truck, supplemental suspension, etc.

This dated article says "no," but I thought members here could confirm
https://www.fourwheeler.com/news/2001-2020-ford-f-250-f-350-super-duty-tremor-first-drive/

 

[Mike Alcocer]

Should be able to look up part numbers on fords website to confirm.

I am sure though that folks with those vehicles will also chime in. Probably best to distinguish between 2020 and 2021

 

[rhines81]

The 7.3L vehicles are rated for about 1400# on the frontend, 6.7L Diesels are rated about 1065# due to the heavier engine. It has been my assumption they are the same front coil spring. You're also saving weight in the rear by removing the spare from that location.

 

[Tx-Tremor6.7]

The 7.3L vehicles are rated for about 1400# on the frontend, 6.7L Diesels are rated about 1065# due to the heavier engine. It has been my assumption they are the same front coil spring.

Has anyone measured their factory 7.3L from the ground to the bottom of the wheel well? Here are the measurements from the ground to the wheel well opening in the center of the tire for my 2021 Tremor F250 Diesel:

Height Empty
Front: 41 3/4”
Rear: 45 1/4”
Front to Back Diff: 3.5”

If they both have the same coil spring, the diesel will sit lower due to the added weight. I know Carli has two different coil springs for their Gas vs Diesel lift kits, so it would not surprise me to hear Ford does the same.

 

[rhines81]

Has anyone measured their factory 7.3L from the ground to the bottom of the wheel well? Here are the measurements from the ground to the wheel well opening in the center of the tire for my 2021 Tremor F250 Diesel:

Height Empty
Front: 41 3/4”
Rear: 45 1/4”
Front to Back Diff: 3.5”

If they both have the same coil spring, the diesel will sit lower due to the added weight. I know Carli has two different coil springs for their Gas vs Diesel lift kits, so it would not surprise me to hear Ford does the same.

Love this, handles better than stock.

#Carli Commuter, #8lugtruckgear

41 3/8” fenderwell before
43 1/2” fender well after.
REAR 44 1/2”

View attachment 1746

Different measurements here with a 6.7... maybe heavier options installed, I don't know. The lower front load rating between the gas/diesel, not ride heights, is why I am assuming same coils.

 

[hedge]

I would think they'd be different as they'd be tuned for the different weight of the engine. I think the weight capacity difference is probably because the axle is rated the same.

 

[Tx-Tremor6.7]

Different measurements here with a 6.7... maybe heavier options installed, I don't know. The lower front load rating between the gas/diesel, not ride heights, is why I am assuming same coils.

I am pretty sure @ftchmup has a 2020, so maybe that is the difference. I also found factory height measurements on Carli's website for a 2020 Tremor that were lower than mine.

https://carlisuspension.com/2020-super-duty-rd/

I called Carli today to ask about the status of my Back Country order and they confirmed they have not measured a 2021 Tremor, yet, but they were not surprised about the differences.

 

[Chris21667]

the other question is what are you tire pressure because that will change the height as well

 

[davidb1841]

Pretty sure I read something that said the 7.3 Tremor had slightly different springs up front than the 6.7 because of the weight difference between the Godzilla and the Powerstroke. But Honestly I am not positive about this one.

 

[Tx-Tremor6.7]

the other question is what are you tire pressure because that will change the height as well

I dropped my factory fronts to 53 lbs and my rears to 68 lbs. I will be swapping them out shortly, but I wanted to avoid the TPMS light for now.

 

[ftchmup]

Pretty sure I read something that said the 7.3 Tremor had slightly different springs up front than the 6.7 because of the weight difference between the Godzilla and the Powerstroke. But Honestly I am not positive about this one.

That is my take also.

 

[Chris21667]

I dropped my factory fronts to 53 lbs and my rears to 68 lbs. I will be swapping them out shortly, but I wanted to avoid the TPMS light for now.

yea i set mine to 50 psi

 

[OffroadMainer]

I would think they'd be different as they'd be tuned for the different weight of the engine. I think the weight capacity difference is probably because the axle is rated the same.

That checks with the article that I linked in the first post. However, journalists have been known to be wrong before...