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mjhipp
Dodge Dakota
JOIN HERE
4/07/2003
22:46:07
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 Subject: How much hp on these mods for a 4.7?
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IAT Sensor Relocation- ? hp gain
Straights Behind the cat- ? hp
3" Cold air intake w/k&n filter- ? hp
TPS Sensor Voltage @ .76v - ? hp
No clutch-driven fan - ? hp
HO Intake manifold - ? hp
HO Cams- ? hp
72 mm TB- ?
Roller Rockers- ? hp (which lift rate/brand are best?)
JBA Shorty's- ? hp
Venom 400 with a Jet stage 2 pcm flash combined- ?
Either hi flo cats or no cats (no inspection in Arkansas!!!!!!!!!!!!!!!!!!)
True Duals - ?
Forged pistons - ?
Just a good educated ballpark would be nice about what all thes mods together would gain over the stock 230 hp, 295 tq??
Should I consider skipping the cams if I plan to turbocharge in the future??? Anything else that should be left out if a turbo is in the future?
Thanks for any thoughts......
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Ian
Dodge Dakota
JOIN HERE
4/08/2003
01:12:11
|  RE: How much hp on these mods for a 4.7?
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Message:
IAT Sensor Relocation- ? minimal
Straights Behind the cat- ?
3" Cold air intake w/k&n filter- 5 hp
TPS Sensor Voltage @ .76v - better throttle response
No clutch-driven fan - 3-4 hp
HO Intake manifold - 2 hp
HO Cams- 14 hp
72 mm TB- 8 hp
Roller Rockers- ?
JBA Shorty's- 3 hp
Venom 400 with a Jet stage 2 pcm flash combined- -2 hp
Either hi flo cats or no cats (no inspection in Arkansas!!!!!!!!!!!!!!!!!!) 2 hp?
True Duals - 5hp
Forged pistons - ?
all in all, probably at least a good 30 hp to be gained there
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mjhipp
Dodge Dakota
JOIN HERE
4/08/2003
01:59:55
|  RE: How much hp on these mods for a 4.7?
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Whats with these claims from K&N about the FIPK gaining 15 hp, and a chip gaining 10 - 15 hp, I believe the cam figures cuz I saw the sheet.
My intake is superior to a K$N FIPK - less restrictive, and receives cold air from behind the grill, it's sweet, I guess I should just dyno it, but thats so expensive to pull a run for every mod...............
Headers only 2 hp----- ? Joking right...
An ECM flash only 2 hp WITH a venom 400?? Come on
The gains have to be better than that......
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CThomp
*GenIII*
4/08/2003
08:02:13
| RE: How much hp on these mods for a 4.7?
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Message:
Most shops i've spoken with have told me around 12h.p. for headers. Thats not that great for the money you spend on them. I'll get headers once I get the h.o. manifold and once crane comes out with some cams that make more h.p. than the h.o. ones do.
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Texas Todd
Dodge Dakota
JOIN HERE
4/08/2003
09:32:52
| RE: How much hp on these mods for a 4.7?
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The headers on the 4.7-probably right about 2hp more.
The jet chip and venom-yea, he's joking,
YOU WON'T SEE ANY GAINS AT ALL!!! Some lose a few, if you have an auto, a few said it shifts different, I think they're justifying their money though.
ho intake, maybe 2hp at the low r's, MANY more at the higher r's, and it will pull past 5400!
72mmTB?-8? I think someone actually posted a dyno with the 72mmtb as the only mod, and it might have been 8pk.
You didn't mention a TB spacer or tornado?
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Garrett
Dodge Dakota
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4/08/2003
09:44:04
| RE: How much hp on these mods for a 4.7?
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Message:
i heard from someone on this board say that shorty's are not good for the 4.7 that med? or full length? is the best?
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black4.7
Dodge Dakota
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4/08/2003
11:27:43
| RE: How much hp on these mods for a 4.7?
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Message:
The Leach PCM flash is good for 13 hp. Thats what I gained when I had mine done.
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mjhipp
Dodge Dakota
JOIN HERE
4/08/2003
15:00:54
|  RE: How much hp on these mods for a 4.7?
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I do have a TB spacer, and I THINK I noticed a difference ( b/c it was $100 ) , but it DOES have a cool whistle when the flap opens...
WHERE or HOW do I go about getting the LEACH PCM flash, how much, etc...
So a good set of headers, True Cold air intake, H/O cams w roller rockers, Leach flash, 72 mm tb, no mech/ fan, Iridium plugs, NO cats (with the o2 simm)+ x pipe /duals, MAYBE a heavier injector and pump, and it MIGHT be good for 280 hp and 350 tq?????? tq???????????????
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Chipster
Dodge Dakota
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4/08/2003
15:40:39
| RE: How much hp on these mods for a 4.7?
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Altogether I gained 50 RWHP from my mods.
72mm F/B throttle body
HO cams & intake
KB Optimizer II
4.10 gears
3" from the Y pipe back spintech exhaust.
229 RWHP with an automatic
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01Motorsport
Dodge Dakota
JOIN HERE
4/08/2003
15:57:25
| RE: How much hp on these mods for a 4.7?
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I read a report on the 4.7 on another site where the D-C engineer said that the manifolds on the 4.7 were designed within 2% of headers. Does anyone recall that site?
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Fubar512
GenIII
4/08/2003
17:05:52
|  RE: How much hp on these mods for a 4.7?
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Message:
IAT sensor relocation on the 4.7 is probably pointless, as the 4.7's composite intake does not transfer engine heat to the IAT sensor, unlike the LA series.
Confucious say: Any man can pee on wall. Be a true hero and crap on ceiling! I've tried being a hero once too often...
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Demon Dakota
DakotaEnthusiast
4/08/2003
17:25:02
| RE: How much hp on these mods for a 4.7?
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Message:
I'm at 219-225 (depending on where the IAT adjuster is set), and I don't have the KB Optimizer II yet :)~
K&N Drop in AF (CAI during summer months)
True Dual exhaust and removed third cat
HO Cams & HO Intake
FASTMAN 70mm TB
Autolite 3923 Plugs
TPS @ .76 VDC
IAT Adjuster Mod
14.52@94.2 MPH at Silver Dollar Raceway
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Chipster
Dodge Dakota
JOIN HERE
4/08/2003
18:17:18
| RE: How much hp on these mods for a 4.7?
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01 Motorsport, that was from a Mopar Mag
article about the Hemi. The same guy who
engineered the Hemi exhaust did the 4.7.
They talked to him, he stated that the 4.7
exhaust manifold was within 2% of headers.
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mjhipp
Dodge Dakota
JOIN HERE
4/08/2003
19:02:45
| RE: How much hp on these mods for a 4.7?
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Message:
Thanks for the info, that means my speculation was basically correct....
I guesstimated about 260 flywheel hp and 3?? tq, on my truck with the present mods, and that sounds about right with you guys results.
What is the KB optimizer, and where do I get it for how much money......?
Thanks alot!
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j
GenIII
4/08/2003
19:07:16
| RE: How much hp on these mods for a 4.7?
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www.kennebell.net
2000 4.7 CC auto, clear corners, Magnaflow catback, Kenne Bell s/c.
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Demon Dakota
DakotaEnthusiast
4/09/2003
13:30:45
| RE: How much hp on these mods for a 4.7?
IP: Logged
Message:
I'm really hoping the KB Optimizer II does a good job for my truck. Can't wait to get it installed. I guess I should stop driving my truck so I can take my PCM/ECU out.
K&N Drop in AF (CAI during summer months)
True Dual exhaust and removed third cat
HO Cams & HO Intake
FASTMAN 70mm TB
Autolite 3923 Plugs
TPS @ .76 VDC
IAT Adjuster Mod
14.52@94.2 MPH at Silver Dollar Raceway
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Nerf-o-matic
Dodge Dakota
JOIN HERE
4/09/2003
21:27:40
| RE: How much hp on these mods for a 4.7?
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Hard to say, because the increase is not linear.
That means, you can't do a little bit and get a
little bit of an increase. Putting in a
generally complete set of mods will give you
something measureable, maybe significant. But,
just one or two mods is subjective at best.
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mjhipp
Dodge Dakota
JOIN HERE
4/09/2003
22:36:17
| RE: How much hp on these mods for a 4.7?
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The Broadness of the powerband is a VERY big aspect.
The broadness of the 330i's 3.0 I-6 is why it can run right next to an Infiniti G-35, same weight car, both 5 speed, and yet rated at 35 less hp, and 46+- less lb's tq, b/c the wide rpm range at which it produces it's hp/tq as opposed to the narrow range the Infiniti produces. No doubt a great car, but not AS great as the 330i.
All that to say broadening the powerband of the somewhat narrow-minded V-8's (even the 4.7) will no doubt bring a competitive edge, though not apparently increasing PEAK hp by much at all.
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Just_waiting
Dodge Dakota
JOIN HERE
4/11/2003
02:17:10
| RE: How much hp on these mods for a 4.7?
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Message:
So, mj.. you're saying that clamping a
turbocharger onto the V8 is the best mod?
Seems to me the 330i has variable intake plenums
and engine computer programming that levels the
powerband a lot. If you don't have these, and
you're not going to put in a turbo (for example
because it's too expensive and because the gas
consumption goes up to 9mpg) then what mods are
there to flatten out the torque & power bands?
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mjhipp
Dodge Dakota
JOIN HERE
4/11/2003
02:45:20
| RE: How much hp on these mods for a 4.7?
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Message:
Well,
Given that the 4.7 has a little better wind than many larger V8's, but that it is still a V8, it does relatively have quite a bit of low end torque, yet, with certain modifications, can obviously be manipulated to have more low, mid, and high rpm Tq and Hp...
With the addition of a free flowing intake system (Cold air, TB, Manifold, Cams), a PCM Flash, free flowing exhaust, and a turbo which can be adjusted from inside the cab, I seriously doubt the mpg will drop to 9 , and speculate that it will remain (under very low boost) near the 17mpg mark.
From the results that members of Dodgedakotas.com have been getting with the above listed mods, it seems that the overall breadth of the powerband can be dramatically increased with the proper setup and yet retain everyday driveability.
Im sure the 330i has a far more advanced computer controlled system and VANOS to help its powerband, but those are NOT the only factors that increase the breadth of the powerband.
As a matter of fact, the VANOS plays a bigger role in efficiency than anything.
I own a 90' 535i that has a broader powerband than any car Ive ever driven, and It doesn't have VANOS, but just regular adjustable lifters, and 2 valves per cylinder. The key to it's broadness is the Head, Chip, and Intake + Exhaust combination.
It has been dyno proven that only miniscule gains are made with the 535i when headers + exhaust are added due to BMW including a free flowing system from the factory. The non-restrictiveness is what allows it to wind so well, and the longer stroke of the 3.5 gives it a mean low end torque.
A V8 will obviously have more bottom end than many tires can get to the ground, so top end wind is what Im after, and this combination of mods should attain that result Just_waiting.
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rosie
Dodge Dakota
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4/15/2003
19:11:45
| RE: How much hp on these mods for a 4.7?
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I have a 2000 4.7 quad cab, I have done the following, dual exaust (flowmaster), cold air tube with K&N filter, Headman headers (bolts are a bi### to get to. Until someone really developes more aftermarket products, we are stuck with the basics. The dual exaust and cold air was probably the best for a little more snap. But will someone tell me why there is such a lug in tacking up firts gear and when second hits it really lugs, is there any hope?
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mjhipp
Dodge Dakota
JOIN HERE
4/15/2003
19:43:17
| RE: How much hp on these mods for a 4.7?
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Lug???? My 4.7 5 spd smokes em into 3rd and will bark 4th, no lug there. I don't have stock tires, but I have 245 50's , and they're about 5 inches shorter than stock tires, so that's probably the equiv. to 3:92 or 4:10 gears with stock tires. The only thing I do have trouble with is spinning, but now that I found a Trac-Lok to put in, it shouldn't spin much at all. Hopefully.
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