That was automotive engineering 601B. The pre-reqs are: you must have had
at least ten years automotive experience to take this class. ;-D (Happy New
Year, Bernd)
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
For modifications see my DML Profile (URL follows)
http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY
-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net]On Behalf Of Bernd D. Ratsch
Sent: Tuesday, January 02, 2001 9:13 PM
To: dakota-truck@buffnet.net
Subject: RE: DML: Acceleration and Axle Ratios
Stick with the 4.7L. If you're going to modify it...there's no substitute
for cubic inches...go with a 5.9L.
You can put a blower, TB, headers, nitrous, whatever on a smaller
displacement engine, but the same mods on a larger displacement engine will
have larger gains. That's just how they work...(Gearing has a lot to do
with the speed...but power is from displacement). Power to Weight also has
a lot to do with the acceleration...bigger engine in a larger vehicle will
make it slower than a smaller engine (with the same power) in a lighter car.
But...make all things even and the larger displacement comes out ahead
again.
Still don't believe me? Ok...some say that they put a Supercharger (or
Turbo) on their car and it was faster...of course...but then what does a
Super/Turbocharger do? It artificially increases displacement (volume...not
physical size). As for mileage, a smaller engine works more
efficiently...to a point, we were getting 25mpg from a 450HP 5.0L that ran
12's all day long...a product of carefully planned volumetric efficiency
"enhancements".
Sure some will say that with todays electronics, cam profiles, OHC and DOHC
4V heads, that the engines make more power that a bigger sized engine...but
add them all together in a larger displacement engine and again...it makes
more power. Don't think that's right? Take my V6...Supercharger, Nitrous,
Intake and Exhaust work...one hell of a fun ride. Now put all that stuff on
a V8...viola...even faster ride.
So as not to confuse you or let this thread linger on even more...we don't
all race on a regular basis and we all want specific things out of our
vehicles. Buy what you want, do what you want with it, and have a blast.
;)
...and that's all I have to say about that.
- Bernd
-----Original Message-----
From: owner-dakota-truck@BUFFNET.NET
[mailto:owner-dakota-truck@BUFFNET.NET]On Behalf Of Bob H.
Sent: Tuesday, January 02, 2001 10:29 PM
To: dakota-truck@buffnet.net
Subject: Re: DML: Acceleration and Axle Ratios
So what engine would you recommend to someone who was
not going to modify it?
What is the gas mileage difference you have found?
What rear end would you recommend. I would love
something like the 5.9 4x2 I drove but if the 4.7 with
a 3.92 is going to be that fast I would probably
rather have that.
Let me know.
Thanks again--I hope I am not stirring up any mailing
list trouble.
Bob H.
--- Viper450hpGTS@aol.com wrote:
> Well, I can compare my R/T v.s. my Sport.
>
> R/T= regular cab
> Sport= regular cab, 4.7L, 5-speed and 3.92 gear
>
> When bone stock, my R/T ran a best of 15.02@92
> mph...
> When modified with F&B TB, 14x3 K&N, ram-air hood,
> 3" exhaust and Mopar PCM
> it ran a best of 14.67@95 mph.
>
> I never timed the Sport before I modified it, but
> with just a cold air
> intake, ported TB (my own) and a 3" Flowmaster
> w/duals, I rapped off a
> 14.42@96 mph on the Stalker Pro w/ATS last week.
> That's with bald RSA's and
> 2300 miles showing on the ODO. The 4.7L has alot of
> low end and mid range but
> the upper pull isn't that great (but much improved
> over stock)
>
> James
> '99 Flame Red RC Dakota R/T (ATI Procharged)
> '01 Black 4.7L RC Dakota Sport (5-speed & 3.92 gear)
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