-----Original Message-----
From: Daniel Colucci
[mailto:djcolucci@worldnet.att.net]
Sent: Wednesday, August 12, 1998 8:12 AM
To: dakota-truck@buffnet.net
Subject: DML: Re: RE: 1/4 mile times on the R/T
I am running a Vortech S-Trim that is claimed to be 7lbs
of boost but I
really don't think at 5000 rpm it is giving me that
amount of boost. I
don't have an intercooler but I do have some duct work
feeding cool air to
the K&N cone filter. I did encounter some problems
hooking up. I had to
be real easy coming out.
you're probably getting less than 7lb. Centrifugal
blowers (Vortech) doesn't build meaningful boost until around 3k rpm.
That's why I think the Kenne Bell/Whipple blower might be better suited
for low rpm engines like the 360 (4700 redline?). Do you have a boost
gauge? Or a fuel pressure gauge? These 2 are essential to tune a blown
motor. A fuel/air ratio gauge would help tune too. FMUs generally add
too much fuel. You want to shoot for a F/A ratio of around 12 under
boost to be safe.
Sorry for the Rustang comment it was only meant
in fun. There were some pretty rusty Mustangs there
however.
No offense taken. I'm very unhappy with Ford as they've
done NOTHING for the performance crowd lately. Gutless 4.6L $24k
Mustangs that gets stomped on by GM F-bodies than cost the same or less.
Ranger without V-8 options, etc.
I have never run the truck before so I don't have any
before and after
times. If mine R/T is like most others it would have
been running in the
mid to high 15's stock. That means I decreased my times
by more than a
half second. The intake has the 90 degree bend, but the
voulute is
relatively straight with a slight dog leg right into the
throttle body. I
also talked to a guy that knew someone that tapped into
their valve cover.
I really don't think the SC sits up high enough for
this.
The only other modification I have on the truck is that
I installed
Magnecor 8.5 MM wires. I will be installing some roller
rockers in the
next few weeks however then I will have to take it easy
for a while.
As far as the HP goes, Vortech claims anywhere from
35-45% on a stock
engine. Using the 220 as a starting point that would
mean I could possibly
get anywhere from 297 to 319HP. If hp is calculated
using the 1/4 mile
times then I think this truck if using better tires
would be in the
14.5-14.6 range. If my R/T started out at say the
190-200 HP range that
number could range from 256 to 290 HP. It seems by the
calculations that
were presented here that 278 HP may be a close figure if
my truck stock was
around 200 HP at the rear wheels. Maybe I'll try to get
some dyno numbers
on it soon to verify. I think to get some more Hp out
of this combination
I would have to tweak the computer and do some exhaust
work to help remove
all of the air the SC is flowing. These modifications
won't come for a
while since I'm running out of money.
I think your ET are pretty good. Your trap speed seems a
bit low. You'll see a big improvement with headers. Try that first
before the roller rockers. Good luck.
However, I am not disappointed in the truck at all. It
received tons of
attention from others and it is a great truck. It was
fun picking up my
father after my last run then heading for the highway.
Dan
----------
> From: Bridges, Bruce <bbridges@alarismed.com>
> To: 'dakota-truck@buffnet.net'
> Subject: DML: RE: 1/4 mile times on the R/T
> Date: Wednesday, August 12, 1998 9:10 AM
>
> Dan,
> Sounds like you had fuuuun. It can be addicting! What
boost are you
> running on the Vortech? 5 lbs? Intercooled or fresh
air induction?
> Was there any hook up problems off the line?
> Bruce
> 98 R/T CC 15.72 stock
>
> -----Original Message-----
> From: Daniel Colucci
[mailto:djcolucci@worldnet.att.net]
> Sent: Tuesday, August 11, 1998 10:01 PM
> To: Dakota mailing list
> Subject: DML: 1/4 mile times on the R/T
>
>
> I had my 98 R/T CC out at US Route 66 Dragway in
Joliet IL tonight.
> What a
> good night to race. The temps were in the 60's with
very little
> humidity.
> BTW, I installed the Vortech on my R/T the last week
and have been
> wondering how this truck will run. I ran the truck
four times. The
> track
> was really crowded tonight. Here's my best run of the
night.
>
>
> The car I was up against was an early 90's Rustang
5.0, 5 speed, cam
> just
> installed, and slicks.
>
>
> R/T Rustang
>
> R/T .815 1.380
(he must have been
> tired
>
because he was
> sleeping)
> 60' 2.213 2.039
>
> 1/8 9.692 9.285
>
> 1/4 14.945 14.572
>
> MPH 94.01 93.56
>
> I won by .192 seconds. It was a great race.
>
> I manually shifted the RT at 5300 rpm. I hit the rev
limiter on this
> run
> between the 1st and 2nd shift. I may have even run a
litle quicker.
> Overall I am pretty happy about the run. I think once
I get the
> supercharger dialed in it will go faster. I don't go
to the track much
> but
> I might start soon. I also weigheds the truck with me
in it and it
> weighed
> exacly 4300 pounds. Subtract my 230 and the truck
weighs in at 4070
> with a
> quarter tank of gas.
>
> Dan
>
> 98 R/T CC with a Vortech
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