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-   -   performance parts help 3.9l (

catfishr3dn3ck 01-08-2012 10:41 PM

performance parts help 3.9l
hi i have a 3.9l engine and im rebuilding the engine i want a cam that will make it rumble and give a good sound but everywhere i looked i cant find a cam to put in my truck and what else should i do to get more power out of the engine if anyone can help me that would be grate

Stump3r 01-08-2012 11:11 PM

Sorry not sure on this one, if the members here can't get you an answer try our Dakota specific forum.

catfishr3dn3ck 01-09-2012 01:42 AM

thanks i will try their and see what they say

Gen1dak 01-10-2012 12:14 AM

Hughes Engines can set you up.

Scootermule 02-24-2015 10:55 PM

I am doing a 3.9L rebuild and from what I understand the major changes one can make are porting the heads (see your machine shop) and opening up the exhaust - ie headers. More performance means more air and fuel in faster and more exhaust out faster. Hence look into having the heads done to get air in/out faster. Headers open up the exhaust, so that should help. I am dubious on the cam thing. ECU mod worked on my Saab 9-3, so that too could be an option for the fuel injection models. I am not sure if a modified air filter that everyone is selling has much impact... Making sure your engine is very balanced internally is always a good idea- ie rods and pistons weight.

HemiLonestar 02-25-2015 12:39 PM

You can pretty much do anything to a 3.9 that you can do to a 5.2/5.9. As stated, Hughes has a bunch of stuff. They have cams and TB's, your problem will be tuning. I think Mopar made a high perf ECU for the 3.9 back in the day, but I don't know if you'd be able to find one now. Other option would be a standalone unit.

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