Steven, my truck is a 5spd, so there is a different driveline loss with the
5spd than with the auto.
5spd is less. If we look at Jeff's numbers because he has an auto truck
we'll see that his truck dyno'd 184 rwhp/252 rwtq. My 5spd truck dyno'd 208
rwhp/285 rwtq (with airhat/airbox removed and K&N installed). Not an even
comparison, but obviously the K&N filter would not make a 24 hp Rear Wheel
difference, maybe 5rwhp, Maybe! So there is some extra driveline loss with
his auto trans. I'm gonna guess the 5spd is about 13 to 15% loss and the
auto trans. is about 20 to 22% loss. My 4.7L is rated from the factory with
230 FWHP not the 235 because my truck is the LEV version. I'm assuming
Jeff's truck is the non LEV version rated at 235 FWHP???
__________________________________
Matt -- Mechanicsville, VA Y2K-HEMI
`00 Sport Plus 4.7L 5spd. 9 1/4 3.92 LSD
RC 2x4 Homemade air intake W/ K&N open element,
Traction Bars, Spring clamps, Mobil 1
BEST 1/4 14.57 @ 91.09 MPH (Hoosier Slicks)
BEST 1/8 9.19 @ 72.58 MPH (Hoosier Slicks)
BEST 60' 1.90
ŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻŻ
-----Original Message-----
From: Stlaurent Mr Steven [mailto:STLAURENTS@mctssa.usmc.mil]
Sent: Wednesday, May 17, 2000 11:12 AM
To: 'dakota-truck@buffnet.net'
Subject: DML: RE: RE: Re: Jeff-Question SC'd 4.7
Sorry Jeff! It was a 5.9 with headers. There is no headers current from
JBA or others for the Dakota. Looking at the numbers from the 5.9 and what
mods were done, the apparent lost was only 22.3 percent to the rear wheels.
The 2K 4.7 has only a 11.7 percent lost to the rear end (using Matt's Dyno
sheet). The calculation would put the 4.7 slightly ahead of the 5.9 with
the same kit.
-------------------------------------------
Steven St.Laurent
Test Engineer
Test Branch, GSD, MCTSSA
MARCORSYSCOM, USMC
760-725-2506 (DSN 365-2506)
Work:mailto:stlaurents@mctssa.usmc.mil
Home:mailto:saint1958@home.com
-----Original Message-----
From: Jeff Crook [mailto:Jeff.Crook@ecitelebn.com]
Sent: Wednesday, May 17, 2000 6:16 AM
To: dakota-truck@buffnet.net
Subject: DML: RE: Re: Jeff-Question SC'd 4.7
Matt
I didn't have a 1/8th time for before SC
Dyno was before and after SC . Before, engine was bone stock. After was with
SC kit, which includes K&N (placed under front driver-side headlight), 180
thermostat, and Kenne-Bell add-on computer
Dak is 00 CC auto 2wd 3.93 axle. Hotchkis springs, sway-bars, Bilstein
shocks (from Hotchkis) giving a 2/3 drop (which looks lower than i wanted to
look but handles superb. Dive on braking and body-roll in corners are
drastically reduced ).
truck is black, with red,and touch of orange, pinstripes painted on by local
'striper.(I hate wax build-up on tape pinstripes) all stickers removed by
dealer when i bought it. tinted windows, sliding rear window. vent-guards
ordered Street scene grill and valence grill yesterday, will have them
anodized black before installing.
next mods--? still looking for headers.
Steve St. Laurent mentioned an ATI SC kit for 4.7 that was dyno'ed with
headers, so I'll try to track down the headers and see if they are
available. (Steve--any info??)
>Jeff, What 1/8 mile times did you run before the supercharger? for
>comparison?
>Tell us more about your truck, Gear, trans, body style etc....
>Was your Dyno test in stock form? or with mods??
>Thanks, Matt
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