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2000DakQC
Dodge Dakota
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1/07/2006
20:40:27

Subject: 5.9L Performance Mods: Dollar/Power
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OK, so I have spent 2 days looking through tons of posts to no clear conclusion. So I'll just have to ask and hopefully get it all wrapped up right here. I want to reach 400hp on my relatively stock 360. I also want to significantly imrove my "off the line" performance - it still could be much better.
1. How much power do the "normal" upgrades produce? i.e. M1 Intake, TB, Iron/Aluminum heads, headers, removing clutch fan, etc.
2. How much should I expect to pay for these things?
3. What order would you recommend I install - due to budget.
4. What would you estimate my current HP with the upgrades done thus far (see below)?

Thanks alot for you input. I was once a member, but got bent after some bad info - gonna try again.

2000 Dakota Quad Cab with a stock 5.9L; AWD; 32" tires with the following upgrades:
1. 3" cat back to muffler then dual 2.5" out
2. 4.10 gears (from 3.55)
3. K&N CAI
4. brass distributor cap / rotor; 8.5mm wires
5. MSD ignition & 40Kv Coil (not installed yet)
6. Thinking about newer 4 port fuel injectors - not for power, just for a smoother throttle response (from what i have read).

Thanks alot,
2000DakQC



.boB
Dodge Dakota
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1/07/2006
23:39:05

RE: 5.9L Performance Mods: Dollar/Power
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This gets tricky. You've done all the easy stuff. Now it's time to do the standard hot rod stuff for power. The tricky part is finding parts that will work together. It's easy for a SBC, but mch more difficult for Magnum because we have fewer choices.

Heads: More flow, more compression, better cylinder charge, and less weight. Edelbrock makes some nice heads now.

Intake: I wouldn't use the Edelbrock with EFI because it is a dual plane. I think the only reasonable choice is the M1.

Valve train. Need a new cam for significant gains. But 1.7 rocker arms will make modest gains for the money. Easy work and low cost make this worth while. Especially with the Edelbrock heads.

Exhaust: Putting the stock exhaust back on to the above changes would be a real waste. http://www.dodgedakota.net/boards/v8/9395.html

Computer: After all these changes, you'll need to do something to fuel and timing to take advantage of it. You'll need a dyno tune and custom chip. I don't think you'll find anything off the shelf to handle it.

And don't forget all the other stuff that makes a vehicle faster: Low resistance tires, less weight, etc.



crow318
Dodge Dakota
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1/09/2006
09:01:21

RE: 5.9L Performance Mods: Dollar/Power
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Well, you are looking for a 63% gain over stock (245 hp). That is a substantial gain. Looking at your list:

Remove clutch fan. Do that first. You will need to replace it with an electric one. People say you wonít if you already have an electric aux. one. It may take care of the cooling needs of a stock engine, but not a 400 h.p. one. It should free up a few (10 maybe) h.p. at the engine.

Headers. Not much to gain here for the $600 that you will spend for a good set. Iíd save that till later.

Heads. A good set will cost more than a grand, and youíll have another couple hundred for installation parts. As for $/hp gains, heads are not usually the first choice.

Intake. Lots of guys make this upgrade because its relatively easy to do and relatively inexpensive. This is what I would do after removing the clutch fan.

TB. You can do this before or after changing your intake manifold.

Now for what I think you should do. One aftermarket bolt-on kit for a 63% gain in power. Supercharger!! Procharger claims 55-60% gains, and I put mine on a dyno and thatís exactly what I got. 4K shipped. Thatís about $27/hp.

I know you said money is an issue. So I would start with the clutch fan, then the intake.




2000DakQC
Dodge Dakota
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1/09/2006
23:04:28

RE: 5.9L Performance Mods: Dollar/Power
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there's an answer, sweet. I kinda had it in mind to do a supercharger. HMMMM. I just wanted to buy a toy I could tote around too. Damn the decisions.
1. So how much power will a new TB/Manifold give me? What kinda $ is this?
2. I also looked at going to a dual input/3" output high flow Cat (I predict it will go bad soon) - will this do much for power for the $$$? (i would assume ~$300 or so , since they will need to cut the Y pipe and extend to the cat)?
3. I have also just ran across good props for a cam swap - How much HP should I expect there - do I have to change anything else for it to work?

Thanks alot,
2000DakQC



crow318
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1/10/2006
08:16:17

RE: 5.9L Performance Mods: Dollar/Power
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You can get a stage 1 Throttle body from hughes for $165 if you send your stock one in. Its good for between 2 and 3 hp over the rev range. Most showing above 4500 rpm's.
The M1 is a high RPM intake, and people claim 20 hp gains with an already modified intake and exhaust system. YOu should be able to pick one up for less than $400.

The intake and throttle body compliment each other.



2000DakQC
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1/10/2006
23:26:15

RE: 5.9L Performance Mods: Dollar/Power
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"Its good for between 2 and 3 hp over the rev range."

I would assume you mean 20-30 HP?? If so, your saying I should get around 40HP with the combo?

Thanks,
2000DakQC



crow318
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1/11/2006
08:12:37

RE: 5.9L Performance Mods: Dollar/Power
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nope, I really meant 2-3. The throttle body alone doesn't do much for you in the way of power. The stock one flows plenty of air. The new one will just give you a better throttle response.

An N/A 360 only requires 500 CFM at 6K. at 5K it drops to 415 CFM.

Unless you increase your volumetric efficiency to better that 1.0 (FI) a new throttle body is not required.



2000DakQC
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1/12/2006
10:22:49

RE: 5.9L Performance Mods: Dollar/Power
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"nope, I really meant 2-3."
I surprised this "upgrade" appears to be so popular with such a small gain. I guess it is one of those things to do when all else is done.

So what about this:
"2. I also looked at going to a dual input/3" output high flow Cat (I predict it will go bad soon) - will this do much for power for the $$$? (i would assume ~$300 or so , since they will need to cut the Y pipe and extend to the cat)?
"
Is this another High rev mod, or will it help me off the line? (If that don't make sense, I never power brake it or neutral drop the tranny)

Thanks,
2000DakQC
5.9L Auto, AWD, 32" tires, 4.10 gears (from 3.55), 3" cat back, K&N CAI, White Face Gauges, Rancho RS9000x w/ in cab remote.




crow318
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1/12/2006
12:21:28

RE: 5.9L Performance Mods: Dollar/Power
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Not sure how the CAT effects power. You will definately gain, but I can't tell you where the gain will be, or if there may be a loss in one area.

I think I've heard before that you loose some bottom end, while gaining up top. I have no proof.

I replaced mine with a 3" in/out, and if nothing else, it sounds better.



Joey
Dodge Dakota
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1/13/2006
00:14:24

RE: 5.9L Performance Mods: Dollar/Power
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ur wrong. the stock throttle body doesnt flow enough air. there have been many dyno tests on this and my own experience in going to the racetrack a few times a year proves that. to get 400hp u will want a F&B 52mm TB, the m1 manifold, m1 computer flash, 1.6 roller rockers, krc 210x or 220 cam, edelbrock or r/t heads, mopar headers with 2.5 true dual exhaust,and all the small basic mods which are mostly already done and u will have 400hp at the engine with about 300-330 at the wheels.



warjunky raci
Dodge Dakota
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8/23/2015
23:45:16

RE: 5.9L Performance Mods: Dollar/Power
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Im reading ur post and i have a 5.9 litre dorango
slt 2 wheel drive with computer upgrade and nos the
che most efficient and best bang for the buck and
dont worry your mopar will handle withno problem....



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