1989 Dodge Dakota 3.9l liter v6. Stock.

So I'm switching from Tbi, to carbed. My map sensor went out (along with who knows what other sensors) and I do not want to chase down electrical BS! So I went and purchased an Edelbrock #1405 4bbl carb. I am purchasing these things

Original Engine Management 7037 Ignition Module
Standard Motor Products RU12 Resistor
and the proper bolts for the carburetor.

Here is what I need to know.
Can I modify, Edelbrock 2701 Performer Intake Manifold, to fit.(I'm on a budget)
If not, what is the best route to go about to make my new carburetor fit?

Thank you in advance.

 

You've forgotten one minor detail.

What are you going to do for spark?

The 3.9 is an uneven fire; there never WAS an uneven fire distributor with spark advance built in.

The best route to make it fit would be to drop in a 5.2 or 5.9 LA motor.

TBH, I think you're going about it bass-ackwards. Why not fix the MAP sensor, and see what else may be there?

Otherwise, you can plan on rewiring the engine bay; designing a replacement distributor; designing an intake for a 4 barrel carburator; and making it all work.

RwP

 

Several things that hopefully will help answer your questions. FWIW I checked into converting my 87 3.9 to a basic carb (not computer controlled carb like it has now) and a standard electronic ignition. Here are the problems I found

1. Distributor is not compatible with a standard electronic ignition box such as the 2701. Mopar at one time made a replacement, offroad distributor for this purpose. But have long since obsolete.
The problem with the 3.9 is the reluctor fires at 116 then 124 degrees rather then an even 120. Again, could not find a reasonable way around that.

2. I was going to use a standard holley 2280 in place of the 6280 carb. But again, mine already had a 2bbl intake.
In your case, IMO there is no way to take a intake made for a V8 and field modify it to fit a V6.

3. A 600 cfm 4bbl is way too much carb for a stock 125hp 3.9 V6


If you are really set on going carb and standard electronic ignition, (and I am too BTW!!) Its going to be better and easier to go ahead, find a 5.2 or 5.9 magnum, completete with accessory drives. Install your 600 carb, air gap or equiv. intake, and a standard ignition system of your choice.
You will need a regulator to lower fuel pressure, and electric fans between the radiator and condenser. There will be a lot of other small things to take care of, wiring, hoses etc.

If your not up for that, IMO as Ralph said, fix what you have. In the end it will be way easier and cheaper.

 

I responded in your other thread....

87s were carb'd....if you're dead set on getting rid of the TBI find an 87 to scavenge.

 

.....

 

Quote:

Originally Posted by rabid_goat

I agree with you that TBI is garbage, its like a carb but with more complicated electronics. However, the GM carb you have won't fit. You need a Holley 6280 which you can either buy or scavenge from a junkyard. They run about only $100 for a rebuilt one on Ebay, but you have to be aware of potential scams.

So much misinformation out there.

1. Edelbrock carbs are not GM carbs.

2. The holley 6280 is the carb that came on a 87 dakota. It needs an O2 sensor. The 2280 is a better choice.

3. Does anyone even know if the carb will bolt in place of the throttle body?

4. Even if you get the carb worked out, the big problem is ignition. What are you going to do for a distributor?



And, FWIW the OP posted this question and has not been back on the site since. Well actually it shows he was logged in 40 min. after the post, but no log in since.

 

Sorry, I was just going by some information I had heard from others. I deleted my post so I won't confuse the poster.

 

Sorry, I was just going by some information I had heard from others and read in my service manual. I deleted my post so I won't confuse the poster.