Will a Fiero with a V8 outrun a BMW 6 series? (Page 1/3)
Skatulaki JAN 04, 10:37 PM
Just wondering how it would stack up? and will it handle well enough?
Raydar JAN 04, 11:07 PM
There are so many variations and flavors of V8 swap, that it's impossible to answer.
wftb JAN 04, 11:45 PM
And is the 6 series a hot BMW? M5 would be tough to beat but I always thought a 6 is just bigger but no faster.
pmbrunelle JAN 05, 12:03 AM

quote
Originally posted by Raydar:

There are so many variations and flavors of V8 swap


...as there are many variants of BMW 6-series, spanning multiple generations.

"outrunning" also depends on the metric chosen. Is it:
0-60 MPH
1/4 mile elapsed time
1/4 mile trap speed
something else?

You can see here the quarter mile times of Fieros, stock and modified with different engines:
http://www.fiero.nl/forum/Forum1/HTML/098801.html
David Hambleton JAN 05, 11:34 AM
Will a Fiero with a V8 outrun a BMW 6 series?

Yes, in at least two categories, irrespective of year & performance enhancing attributes:
Your fun will last longer.
Your funds will last longer.
Tony Kania JAN 05, 11:38 AM
I rceda my firoe against anythng that is next to me! Nothing wins. Bwahahahah! Nthngh

No. A V8 in a mid 80's GM vehicle will not out run any 6 Series. Engineering alone trumps GM. There are probably a handful of Fieros that can even sit next to a 6 of any era. Home built bad azzed Fieros.

cvxjet JAN 05, 11:41 AM
Like others have stated- a lot of variables; Which version of 6 series...and which V8?

You could put an old cast-iron SB in a Fiero, adding 200 lbs to the rear and only getting 200 HP, total.......That would not perform much better than a stock V6.

You can install an LS7 which only weighs 20-30 lbs more than the 2.8 V6.....2800 lbs X 500 hp...Properly set up and driven, that will beat the crap out of many supercars....

The best V8 conversion is probably the LS4, which is the transverse LS V8...Bolts right to a Fiero trany, weighs approx' 20 lbs more than the V6, and has (Stock) 305 hp

The C7 Vette weighs 3700 lbs (Idiotic) and has 455 hp for 8.1 lb/Hp.....a 2700 lb Fiero would equal that at 330 hp....

Critical to this situation; How is the engine/tans/Suspension set up? Do it right and you have an amazing and fun car- do it wrong and you have a dangerous......pile.....
fieroguru JAN 05, 01:08 PM
Simple question... the simple answer is: Yes... with enough time, money, and determination just about anything is possible. It is fairly simple to build a fiero to perform well on any specific metric...

The super hard part is having a Fiero outperform any late model performance car on multiple metrics with the same level of refinement, balance, and driver ease. You will have to go through every single system (engine, transmission, suspension, brakes, wheels/tires) and focus on NVH (Noise, Vibration & Harshness) as much as you focus on performance. To do this, you will likely spend 2-3X more than you can buy whatever car you are benchmarking against.

cvxjet JAN 05, 01:36 PM
Mr. Guru- well said....But, I have to say that new cars are becoming too refined; They are getting to a point where you might as well be driving a video game- Not much skill is involved when you have a swarm of computers controlling everything...Heck, the new Vette doesn't even have a manual trans available!

A couple of young kids have asked me about my car recently- they see multiple Mustangs/Camaros/Chargers w/400HP+ and ask about my performance...with only 160 hp and skinny tires (205/225) my Fiero's performance is not up there, numbers wise...and there is very little refinement.

But I can dice on a windy back road and have a lot of fun at 30-50 mph....I tell these kids about that....don't know if I am getting thru to them tho.....
pmbrunelle JAN 05, 02:57 PM
I don't see the point in modifying for NVH and refinement in addition to power and grip.

For me, the attraction of the Fiero is that it's a simple, raw, loud, and unrefined car, without power steering or driving aids (other than power brakes). Modifying for power and grip only gives a combination that cannot be purchased in the showroom.

If you want the full array of modern-car characteristics, just buy a modern car.