Fiorano Handling Package (F355)

I highly doubt anyone successfully fully retrofitted an FHP kit onto a 355 and I don’t know about it. Too much hard-to-find details and no way this was all known 10-20 years ago, not to mention availability of the parts. Point is, if a 355 has all of these parts, it came from the factory that way.

 

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Ken, it's also interesting to note that the "sporting" geometry setting was not available for the USA, Canadian and Australian markets. I wonder what camber, caster, toe-in and ride height settings were used for those markets.

If you manage to get the few missing parts you need for your planned OEM FHP retrofitting, will you use the listed geometry setting?

 

This "confidential" document (notice the writing along the sides) was issued Feb 1999. I believe they are generally stating FHP options were not available on U.S, Canada, and Australian cars, hence the geometry was also not given to those cars. Considering Serie Fioranos came about the second half of 1999 in the U.S, this document was probably pre-mature in making that statement.

I will aim for these spec/geometry as best as I can, because I am eager to experience FHP as intended. I am surprised by -2.3 degree rear camber. It better be good .

 

That would be a good choice.

For comparison, here are the suggested basic setting data for the F355 Challenge as it appears in the Ferrari F355 Challenge Technical Regulations...


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Happy to post it, I have searched for Ferrari documented information on the Fiorano Pack for years, I'd never seen anything like this document before.

 

I need to make a correction. Uprated rear sway bars currently hits lower spring perch on dampers, not suspension arm.

355 challenge rear lower forks are same as standard, BUT spring perches sit higher on the damper due to very short challenge springs.

 

With which springs - standard or FHP? And which ride height? Those will affect spring perch location.

 

Superformance sell the straight on type rear forks as well

 

FHP springs. They are taller than standard springs. Relatively standard ride heights. Not slammed.

*hits under hard turning

 

Standard vs FHP (or 348 lower forks). 355 challenge cars still have standard lower forks.

@Mitch Alsup thoughts on why Ferrari decided to revert back to early 348 lower forks for FHP?


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It's gotta be to maintain correct suspension geometry at the lower ride height of the challenge cars

 

But challenge cars have standard rear lower forks.

 

Ch cars had standard forks but were set at very negative camber. Often had no shims.

 

At my dealer we did it to several cars when they were still nearly new. I remember the last one we did we had real trouble getting the adjustable sway bar links.

One story we got from the factory and sounded legit was the package was offered to get rid of existing stocks of parts they really didn't want to inventory anymore.

 

Standard 355 to my recollection. Running those set up numbers it would have violated bumper height restrictions so Ferrari could not condone those numbers. We did do a lot of experimentation on suspension set ups and kind of had our own for street use. Few wanted to go very low and if camber was very negative they would eat tires on the street. We did set the front a little lower on cars that did a lot of high speed use. We got good feedback on it improving the stability at very high speeds. It all depended on how it was being used.

 

The internal pressure regulator was set to lower pressure.

 

Adjustable sway bar links were only on challenge cars. Not part of the FHP kit.

 

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Thanks to all, missing the forks since yesterday… I didn’t know they were different.
It’s not given the forks for some steel….
Will be installed next small check.
I think my 355 will be completed as factory




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I add tie roll ball adjustable.
That’s giving me possibility to change mesures easely.


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Thanks to the Cat ! Owner is Ken

 

I installed a few sets of them along with the front CH shocks which the cars really need.

 

In today's market, how much is a F355 GTS with Fiorano Handling Pack (FHP), eurospec, manual, grey with 40.000 KM worth do you guys think?

I wasn't able to find any reference points on BAT as they weren't sold in the US... i thinking of buying one.

Thanks for the advice

 

Hello Gaetan From France, F1 or manual box ?
I imagine F1, it exists very very few GTS FHP with manual box.
Tell us please