"Frank ess" > wrote in message ...
> lid wrote:
> > "John S." > wrote in message
> > ...
> >> On Jul 24, 6:06 am, columbotrek >
> >> wrote:
> >>> John S. wrote:
> >>>> On Jul 21, 12:16 pm, "C. E. White"
> >>>> > wrote:
> >>>>> I am interested in an estimate of the top speed of the following
> >>>>> version of a 2006 Mustang Coupe with the 4.0L V6 and a manual
> >>>>> transmission. Assume the base model -
> >>>
> >>>>> 1) As delivered. I assume Ford included a speed limit in the PCM
> >>>>> 2) With a chip that removes the speed limit
> >>>>> 3) With a chip, free flowing duals (cat back), and a K&N intake.
> >>>
> >>>>> Would this last combo actually be able to exceed 120 mph?
> >>>
> >>>>> Ed
> >>>
> >>>> As delivered from Ford the V6 is limited to 113 MPH... You don't
> >>>> put a "chip" in this car. You will need to buy a handheld tuner
> >>>> and reflash the car. Most of these will either remove the
> >>>> limiter or allow you to raid the limit. The car should easily
> >>>> be able to hit 120 MPH...
> >>>
> >>>> Besides making sure you have the properly rated tires, I would
> >>>> also be leery of the stock drive shaft... they are pretty much
> >>>> junk... They vibrate like crazy.... also I don't remember
> >>>> exactly when Ford switched but the early drive shafts did NOT
> >>>> use C-clips to hold the u- joints in... instead they were staked
> >>>> in... but eventually the stakes would give way any the drive
> >>>> shafts would come apart... which is very bad thing to happen at
> >>>> 120 MPH... luckily the ones I know of were all on the dyno...
> >>>> but still caused a fair amount of damage...
> >>>
> >>>> Even if you drive shaft is clipped I would still recommend an
> >>>> after market drive shaft if you plan on doing a lot of high speed
> >>>> driving.... I couldn't keep a rear pinion seal in my car until i
> >>>> replaced mine...
> >>>
> >>> Interesting comments. Is the drive shaft on the GT the same as on
> >>> the V6? I have had my S197 GT upwards of 130 on a couple
> >>> occasions and not a hint of any vibration at all.
> >>
> >> Nope, GT and V6 are very different driveshafts... the V6 one is a
> >> POS....
> >
> > Absolutely correct. You'll begin feeling vibrations in a V6 at
> > something around 95-100 mph, and it quickly gets worse.
> >
> > Another problem in the V6 is, at these speeds the car will start
> > to feel very light and will begin to drift, and if you correct too
> > quickly or in the wrong direction, well, it's called natural
> > selection I think.
>
> I suppose some of the V6s vibrated, but not mine (2006 convertible
> automatic), and with the BamaChips tune it was not top-speed limited
> at 113. It was stlll accelerating at 130 (5300 in 4th) when I
> chickened out.

The V6 driveshaft is rated to 115 mph. It's pure luck whether
it blows at speeds above that. I'd certainly not recommend it.

> As for the drift: even before shocks, springs, and sways were
> upgraded, no drift. The Classic front chin spoiler and lack of rear
> spoiler other than a "lip" may have had something to do with that.
>
> http://farm1.static.flickr.com/233/4...36e9ecca_o.jpg

Maybe, but again we're talking (I think) about factory stock.
I've had mine up to 110 mph and the drift was starting to get
scary.