Handling Pack-Mistake

[Ryunker]

I have a 700a car, without HP and it is absolutely perfect. After getting it, and now with some miles on it, if had to do it buy again HP or non HP, would avoid HP hands down. Car is perfect as is. Can not see why anyone would order the HP (with the exception of routine track days).

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[raceheart77]

I would get the HP springs from Ford. The DH HP stance is perfect. Hearing about clicking and noises from aftermarket springs would make me worried.
The non-HP stance looks goofy to me, big wheel gap... sits like a commuter car for a "track weapon".

 

[Mikepol2]

Can’t be, otherwise the wheel well gap would be horrific.

Non-HP front tires are 255/40-19, diameter is 27.03", radius 13.52".
HP front 305/30-19, diameter 26.20", radius 13.10".
So the HP front has 0.40" less ground clearance because of the tires but has a 0.40" larger wheel gap to the fender, some of which is masked by the fender lips.

Non-HP rear 275/40-19, diameter 27.66", radius 13.83".
HP rear 315/30-19, diameter 26.44", radius 13.22".
So the HP rear has 0.61" less ground clearance than the non-HP but has a 0.61" larger fender gap.

 

[topdawg4ever]

So your telling me aside from wheel gap, the HP vs non HP are the same in stance before you account for wheels.

Non-HP front tires are 255/40-19, diameter is 27.03", radius 13.52".
HP front 305/30-19, diameter 26.20", radius 13.10".
So the HP front has 0.40" less ground clearance because of the tires but has a 0.40" larger wheel gap to the fender, some of which is masked by the fender lips.

Non-HP rear 275/40-19, diameter 27.66", radius 13.83".
HP rear 315/30-19, diameter 26.44", radius 13.22".
So the HP rear has 0.61" less ground clearance than the non-HP but has a 0.61" larger fender gap.

 

[Saburak]

I doubt that it's the same spring for HP and non-HP; HP requires a certain rigidity.

 

[roadpilot]

I doubt that it's the same spring for HP and non-HP; HP requires a certain rigidity.

Anybody having access to parts catalog for the cars can look up the part numbers and avoid doubting or guessing. Any takers?

 

[raceheart77]

I doubt that it's the same spring for HP and non-HP; HP requires a certain rigidity.

100% Correct. I will try to find the link of the Ford Engineer where he mentions the the different springs and lowered ride height of the DH HP.

 

[Mikepol2]

So your telling me aside from wheel gap, the HP vs non HP are the same in stance before you account for wheels.

I doubt that it's the same spring for HP and non-HP; HP requires a certain rigidity.

Anybody having access to parts catalog for the cars can look up the part numbers and avoid doubting or guessing. Any takers?

100% Correct. I will try to find the link of the Ford Engineer where he mentions the the different springs and lowered ride height of the DH HP.

Although I have not seen this confirmed, it would seem reasonable that the DH springs and sway bars are the same as the Mach 1. Here is a chart I put together with spring rates and sway bar sizes for various models. I currently am running the stock Mach 1 HP springs with the Steeda adjustable sway bar.

	PP1 w/o MR	Mach 1	Mach 1 HP / PP2	GT350 (2016-2018)	GT350 (2019+)	GT350R	Steeda Dual-Rate	Steeda 555-1017
Front springs	165 lb	194 lb	211 lb	194 lb	211 lb	240 lb	195 / 300
Rear springs	728 lb	657 lb	742 lb	914 lb	857 lb	914 lb	800 / 1300
Front sway	32.0mm solid	33.3 x 5.0mm wall (JR3C 5482 DA)	33.3 x 5.0mm wall (JR3C 5482 DA)		34 x 5.7mm wall	34 x 4.8mm wall		35 mm (5% thicker)
Rear sway	22.2mm solid	24 x 3.6mm wall	24mm solid (JR3C 5A772 DA)		24 x 3.6mm wall	24 x 3.6mm wall		25.4 mm (6% thicker)

 

[topdawg4ever]

I’m assuming the downside to lowering the car, is ride quality on longer road trips. Having logged enough miles in a GT500 track pack, that certainly isn’t a road trip car.

 

[Upacurb]

I’m assuming the downside to lowering the car, is ride quality on longer road trips. Having logged enough miles in a GT500 track pack, that certainly isn’t a road trip car.

I do road trips in mine all the time… cup 2 and carbon fiber wheels and all … just recently did a 1000 mile trip to Scottsdale and back for Barrett Jackson and some cars and coffees

 

[topdawg4ever]

I'm not sayng you can't road trip. I am saying there is a trade off. Has to be a less comfortable ride. Always a great time regardless, but my old bones, and long torso need some comfort at this stage.

I do road trips in mine all the time… cup 2 and carbon fiber wheels and all … just recently did a 1000 mile trip to Scottsdale and back for Barrett Jackson and some cars and coffees

 

[Upacurb]

I'm not sayng you can't road trip. I am saying there is a trade off. Has to be a less comfortable ride. Always a great time regardless, but my old bones, and long torso need some comfort at this stage.

LOL I'm almost 50 - Ill be there soon as well!

 

[Cody5.0]

Can’t be, otherwise the wheel well gap would be horrific.

The springs are responsible for ~.25” of ride height difference. And this is comparing my PP1 to my PP2 with the PP2 sitting even lower as the 305/30R19 on the rear is stretched.

 

[Polo08816]

I’m assuming the downside to lowering the car, is ride quality on longer road trips. Having logged enough miles in a GT500 track pack, that certainly isn’t a road trip car.

I do road trips in mine all the time… cup 2 and carbon fiber wheels and all … just recently did a 1000 mile trip to Scottsdale and back for Barrett Jackson and some cars and coffees

While stiffer springs and/or slightly lower ride height (and thus suspension travel) can negatively impact ride quality, I'm of the opinion that tire sidewall height and stiffness have a greater effect on ride quality.

 

[tj@steeda]

We have a Dark Horse on order & it should be delivered soon & we also have had several we have upgraded since the release - if you want any feedback, I can put you in contact with Rodney &/or John - they are two (2) of our lead sales professionals with a strong background in suspension set-ups.

Let me know - you can connect with me at [email protected] & I can make an intro.

Best,

TJ

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