Redline is 7000 RPM and the optimum shift point is around 6800.
The 4.6 engine likes to spin. Stock top speeds in gear are
bordering on the ridiculous: 49, 83, 125, 166. With a 3.73 they
are closer to other high performance cars: 43, 73, 109, 145. I
was getting power oversteer in 2nd gear even on the tight turns
on Sunday, but that may be due to having street tires.
What is FMS?
James Creasy wrote:
>
> wow that is tall... i have 3:08 stock gears. but i suppose you have a
> higher redline (6250 is the rev limiter). 3:27 or maybe even 3:55 would be
> good. just as long as 1st gear is useful. i can hit 40mph in 1st which is
> worth shifting down for... although i have other problems driving the thing
> and havent bothered.
>
> if FMS has them id just get those.
>
> -James Creasy
> Slip Angle Racing www.klio.net/cobra
> BAPOC www.klio.net/probe
>
> ----- Original Message -----
> From: Michael R. Clements <mrc01@flash.net>
> > I'm thinking gearing is the way to go. It's geared too tall right
> > now (top of 2nd gear is 83 mph), so replacing the 3.27 with a
> > 3.73 should provide a 10-15% improvement in acceleration and
> > still provide a respectable 73 mph in 2nd gear. I don't want to
> > buy a 2nd set of wheels but I will get Kumhos as soon as they
> > make the 18" sizes. Any suggestions on where to get the 3.73
> > differential?
> >
> > James Creasy wrote:
> > >
> > > when i consider mods, i want at least 100 additional hp or else i wont
> be
> > > able to tell the difference. i must have a numb butt. borden's cobra
> has
> > > over twice the HP of mine, and it, well, seemed fast too. =) so save up
> for
> > > a nice stroker or vortech perhaps. check out the new 392 crate motor,
> > > 530+hp without a blower. my car starts to do uncontrollable wheelies
> with
> > > more than 600hp however.
> > >
> > > cant you get some 17" wheels for the kumhos? that would be much more
> > > entertaining i think than 10 more hp.
> > >
> > > there was a problem with many of the 320hp cobras dynoing at 260 or less
> > > (crank). some were ok, some not.
> > >
> > > -james
> > >
> > > ----- Original Message -----
> > > From: Michael R. Clements <mrc01@flash.net>
> > > To: Carl Merritt <cmerritt@ati.com>
> > > Cc: Autocross List <ba-autox@autox.team.net>; James Creasy
> > > <black94pgt@pacbell.net>
> > > Sent: Thursday, October 26, 2000 8:47 AM
> > > Subject: Re: super chips?
> > >
> > > > Thanks, I'm beginning to get skeptical about this whole chip
> > > > thing. They say they optimize it for 92 octane gas, but the stock
> > > > engine already requires 92 octane. I'm still wondering what Ford
> > > > did to increase hp to 320 in the 1999 model engine; previous
> > > > models were "only" 305 hp.
> > > >
> > > > Maybe the newer Ford engines really weren't 320 hp. I remember
> > > > reading somewhere that Ford took some flack for publishing
> > > > unrealistic hp numbers. Indeed, this shows up in the NHTSA
> > > > database as TSB # 99B27. But on Corral.net they are measuring
> > > > 280-290 hp at the rear wheel on stock Cobras, which seems to be
> > > > consistent with a 320 hp engine.
> > > >
> > > > I also noticed that Ford isn't making the Cobra any more. Anyone
> > > > know why?
> > > >
> > > > Maybe it doesn't really matter because all of this makes about a
> > > > 5% difference which isn't noticeable, and the car isn't exactly
> > > > underpowered as it stands.
> > > >
> > > > Carl Merritt wrote:
> > > > >
> > > > > Marketing Bunk. Some people on twinturbo.net dumped the eeprom and
> > > found
> > > > > all of two bits different from stock.
> > > > >
> > > > > Again, YMMV, I have no idea about the quality if their chips for
> other
> > > > > motors.
> > > > >
> > > > > -Carl
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Michael R. Clements [mailto:mrc01@flash.net]
> > > > > > Sent: Wednesday, October 25, 2000 3:17 PM
> > > > > > To: Carl Merritt
> > > > > > Cc: Autocross List; James Creasy
> > > > > > Subject: Re: super chips?
> > > > > >
> > > > > >
> > > > > > Interesting you should mention the 300ZX chip. Superchips says
> > > > > > they adjust everything on these cars -- mixture, boost pressure,
> > > > > > timing, etc. Check it out:
> > > > > > http://www.superchips.com/300nasp.htm
> > > > > > http://www.superchips.com/300zxst.htm
> > > > > > http://www.superchips.com/300zxtt.htm
> > > > > >
> > > > > > OTOH, they say the Corvette engine is already so optimized that
> > > > > > they could not improve it much with their own chip.
> > > > > > http://www.superchips.com/corvet94.htm
> > > > > >
> > > > > > From 1998 to 1999, Ford increased the horsepower of the 4.6L
> > > > > > engine from 305 to 320. Did they do this by optimizing the chip?
> > > > > >
> > > > > > Carl Merritt wrote:
> > > > > > >
> > > > > > > I have a chip (Jim Wolf Technology) for my 300ZX, and it
> > > > > > gave a quite
> > > > > > > measurable %7 increase in power (G-Tech derived) and better
> throttle
> > > > > > > response. However, it's well known in the 300ZX community that
> the
> > > > > > > Superchips chip for our car does nothing but up the
> > > > > > revlimiter and remove
> > > > > > > the ~150MPH speed limit, no tweaks to the timing and fuel
> > > > > > curves at all, so
> > > > > > > YMMV.
> > > > > > >
> > > > > > > -Carl
> > > > > > >
> > > > > > > > -----Original Message-----
> > > > > > > > From: Michael R. Clements [mailto:mrc01@flash.net]
> > > > > > > > Sent: Wednesday, October 25, 2000 2:39 PM
> > > > > > > > To: Autocross List
> > > > > > > > Subject: super chips?
> > > > > > > >
> > > > > > > >
> > > > > > > > Has anyone tried "chipping" a car? Is this something worth
> doing?
> > > > > > > > If so, can anyone recommend a chip for the 1998 year 4.6L Ford
> > > > > > > > Cobra engine? I've been emailing a guy at Superchips. They
> seem
> > > > > > > > like they know what they're doing, their dyno chart looked
> good,
> > > > > > > > but appearances can be deceiving. I'd appreciate any
> first-hand
> > > > > > > > experiences or advice.
> > > > > > > >
> > > > > > > > Thanks,
> > > > > > > >
> > > > > > > > --
> > > > > > > > Michael R. Clements
> > > > > > > > mrc01@flash.net
> > > > > > > > Extremism in the defense of liberty is no vice.
> > > > > > > > Moderation in the pursuit of justice is no virtue.
> > > > > > > > -- Barry Goldwater
> > > > > > > >
> > > > > >
> > > > > > --
> > > > > > Michael R. Clements
> > > > > > mrc01@flash.net
> > > > > > Extremism in the defense of liberty is no vice.
> > > > > > Moderation in the pursuit of justice is no virtue.
> > > > > > -- Barry Goldwater
> > > > > >
> > > >
> > > > --
> > > > Michael R. Clements
> > > > mrc01@flash.net
> > > > Extremism in the defense of liberty is no vice.
> > > > Moderation in the pursuit of justice is no virtue.
> > > > -- Barry Goldwater
> >
> > --
> > Michael R. Clements
> > mrc01@flash.net
> > Extremism in the defense of liberty is no vice.
> > Moderation in the pursuit of justice is no virtue.
> > -- Barry Goldwater
--
Michael R. Clements
mrc01@flash.net
Extremism in the defense of liberty is no vice.
Moderation in the pursuit of justice is no virtue.
-- Barry Goldwater
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