Well, I hate Mags, but when MT tested their first Durango R/T it ran .2
quicker in the quarter and 0-60. ANd the 4.7 had lighter wheels plus no
running boards too, and the 5.9 was still faster. They were using their
quickest times outta all the 4.7s they tested BTW.
Also, 5.9s do NOT have to have premium fuel except in the Durango R/T and 98
Jeep Grand Cherokee 5.9 Limited.
-Ryan
99 DA RC R/T
Used 87 till Performance PCM.
-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net]On Behalf Of Sevrence, Sean
(S.J.)
Sent: Monday, May 21, 2001 12:42 PM
To: 'dakota-truck@buffnet.net'
Subject: DML: Now towing capacity (Was 5.9 availability)
Hey Jason!
That's a good thought, but it's not quite accurate.
My bro-in-law worked at JTE (Jeep Truck Engineering) here in Detroit where
they developed the distributorless system we have today on the 4.7L. At the
time, they were debating whether to produce the Durango R/T. They put the
4X4 5.9L Durango against the 4X4 4.7L Durango for a quarter mile battle.
Identical trucks except for the engine and the 4.7L won. He didn't give me
the numbers and has moved on since then so he can not get them. This is to
answer the quickness, not pulling capacity.
As far as towing goes for our Dak's, the brochure shows a difference of only
300 lbs for GCWR (Gross Combined Weight Rating -- truck, trailer, cargo,
passengers, fuel, french fries, change, etc.) 10,800 for 5.9L and 10,500 for
4.7L both with a 3.92 rear end auto and manual. They have the same value of
9,200 for the 3.55 rear end (the manual can pull 9,500 lbs). The vehicle
weights are needed to calculate which engine can pull more. I had my dad
look up the weights of the QC SLT 4X2 for each engine. The 5.9L weights 190
lbs more than the 4.7L. Therefore the 5.9L can pull 110 lbs more than the
4.7L. That answers which engine can pull more.
This still leaves the question of while pulling 6,500* lbs which does 0-60
the fastest. My answer is who cares? Just kidding <G>. It depends of the
non-pulling days you drive your truck. Highway driving is similar (within
0.5mpg at 60-65mph), while in the city the 4.7L has an advantage of about 2
mpg. With the 5.9L requiring premium gas, it will drain your wallets much
faster than the 4.7L that can run 87 octane.
*6,500 lbs is 10,500 GCWR subtract my 4.7L CC 4X2 SLT 5spd weighs in at
3,997 lbs. Please find out your vehicle weight before attempting to pull
this much weight!
HTH!!
Sean
'92 RC Sport 3.9L 5spd - 250,000mi!
'01 CC SLT+ 4.7L 5spd 3.92 LSD Mobil-1!
http://www.twistedbits.net/WWWProfile/dakota/DnuuSncssJujU
-----Original Message-----
From: Woodruff, Jason P [mailto:Jason.Woodruff@West.Boeing.com]
Sent: Monday, May 21, 2001 11:46 AM
To: DML (E-mail)
Subject: RE: DML: 5.9 availability
I get the feeling the heavier the truck the more the 5.9L will out perform
the 4.7L. If I really wanted to go fast in a QC or a 4x4 or the super heavy
weight 4x4QC I'd opt for a 5.9L.
I went towing 4500#'s a month ago and I noticed I was missing 73 cubes. So
even though I have no numbers to prove it, I think the 5.9 will out Torque
the 4.7L. Which translates in faster times for heavier trucks.
Jay W
4.7L Auto Sport+ C.C. 2wd Black
Mods Profile page at
http://www.twistedbits.net/WWWProfile/dakota/Re5X8z5la@Ix2/profile.htm
---original message---
Date: Mon, 21 May 2001 07:40:59 -0700
From: Stlaurent Mr Steven <STLAURENTS@mctssa.usmc.mil>
Subject: RE: DML: 5.9 availability
John, those numbers are only there not to disturb the R/T advertisement and
owners. The real truth is the dyno, John. Put both trucks on the Dyno Jet
and you will see that they both pull almost the same at the wheel. The only
exception is the 4.7 pulls the TQ through out the RPM range versus the R/T
quick TQ duration.
Why would ChryCo do this? MONEY$$$$$$$$$$$$$$$$$
I know, I have done it on my truck and did a comparo and the results are
there to prove it.
- --------------------------------------
Steven St.Laurent
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:01:32 EDT