Re: RE: 1/4 mile times on the R/T

From: Daniel Colucci (djcolucci@worldnet.att.net)
Date: Wed Aug 12 1998 - 11:12:26 EDT


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. Sorry for the Rustang comment it was only meant
in fun. There were some pretty rusty Mustangs there however.

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.

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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