Dakota 4.7L V-8

[Red Rocket]

Alright, bear with me, I know its two more cylinders and put together all wrong and crooked, but does anyone have some tricks for this motor. My brother in law is very disappointed in the power and mileage, but thats what he gets for riding in my Cummins! Any ideas would be helpful.

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1998 2500, 12 valves, SLT, auto, 3. 54, 285/75-16, TST 230/605, t/c switch, DiPricol EGT/boost guages,K&N,camper special, 65,000 miles(2/01),
12 ton goosneck!
'01 Polaris EDGE-X 600

 

[Dave Fritz]

No tricks, but a good overview of this motor was written by Richard Ehrenberg for Mopar Action Magazine. I have the article posted if you are interested in reading it. http://dodgeram.org/tech/gas/Cammer/4_7_v8.html

Dave

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1994 2500HD 4X4 modified for off-road camping
2001 2500 ETH/DEE QC SB 4X4
Fritz's Dodge Ram Tech Page is now dodgeram.org

 

[Red Rocket]

I appreciate anything I can get. I was thinking with all the tricks on the cummins, there would have to be one or two for this thing. Guess not... .

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1998 2500, 12 valves, SLT, auto, 3. 54, 285/75-16, TST 230/605, t/c switch, DiPricol EGT/boost guages,K&N,camper special, 65,000 miles(2/01),
12 ton goosneck!
'01 Polaris EDGE-X 600

 

[RonaldLarson]

You gotta be kidding! My wife's Grand Cherokee 4. 7L will blow the doors off any currently produced small block V8 with ease, and gets 14 city, 28 highway in winter. No, this is not an idle boast. This thing pulls my 5000# boat up the six percent grade to Holter Lake, with four big adults, at sixtyseven MPH (on cruise control) and does not work up a temperature doing it. Tell them to release the parking brake!
Ron

 

[Red Rocket]

Hes been telling me numbers between 15 and 20, and all he drives is highway. And it kind of struggles pulling 2 snowmobiles.

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1998 2500, 12 valves, SLT, auto, 3. 54, 285/75-16, TST 230/605, t/c switch, DiPricol EGT/boost guages,K&N,camper special, 65,000 miles(2/01),
12 ton goosneck!
'01 Polaris EDGE-X 600

 

[Old Nordby]

Well heck, there are some pretty standard things you can do to almost any gasser to get them running.

Cool, dense air is huge. So, put a K&N in it, check the intake from the airbox all the way to the manifold for restrictors or silencers and cut them out (my 460 had these "air horns" in it that resulted in a huge reduction in airflow). These are usually what the intake hoses are connected to, so disconnect all of them and look!

Make sure the airbox itself is getting enough air, try even making it some kind of forced induction if possible.

Wrap all intake hoses with heat resistant tape, it keeps the intake air cool from the heat generated by the motor and radiator.

In the summer, use a 180 or 185 degree thermostat.

Put a high flow muffler and a high flow cat on minimally, and if $$$'s allow, replace the whole thing with a high quality madrel-bend system.

Due to your location in MN, lots of moist dense air at that altitude - use it!

There is the air part (at least a swag at it!). Probably all kinds of other stuff to do from spark plugs to ignitions to intake manifolds to fuel, and then the good stuff with heads/superchargers/engine rebuilds that add up to $$$$$'s.

jon

 

[JyRO]

Sorry Ol'Ron, 28 hwy is way-way far fetched IMHO. Unless of course your running 35 mph. So I don't believe that for . 1 seconds. I'm sure it pulls good though, my brother's got a 4 door dakota with the 4. 7, and its good and strong. His is a manual transmission, and is lighter than your Cherokee, and his won't touch 28. His will get about 22 or 23 max.

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Y2K 2500 Cummins ETC/DEE, SLT+, 4X4, Quad, LB, Intense Blue Sport, 3. 54 LSD, rear aux. springs (camper special), sliding rear window, all options except cab clearance lights including agate leather, totally stock engine, silencer ring removed, "stealth," mod to run fogs with high beam. Since everybody else listed their toys, I will too.
1995 Kawasaki ZX6-R (For Sale)
1990 Toyota Celica
1983 Mazda RX-7 GSL (For sale)