I was wondering if any of you guys new what some of the best mods there are for my 2003 w/4.7? I've made a few so far, duel exhaust, tuner, filter only. I don't want to actually modify the engine itself.

 

Gear ratios.

or viper v10 swap.

You can't really do more than you have.

 

Can you be a little more specific? Which gear should I go with?

What about a 180 t-stat or a different intake?

 

3.92 or 4.11

 

5.38! jk only if your going with huge tires, but 4.10 is really good for towing.

 

Stat helps, but it's not like amazing or anything. Also you already have the better gear ratios. I would suggest H.O. cams or something.

 

what all is involved in changing the cams?(besides the cams)

 

http://www.dodgeboy.net/durango/47ho/index.htm

 

pulling the cylinder heads. the 180 t stat will work with other mods done (intake, exhaust, etc). all of them combined will "compliment" each other. however i know this is works on the LA block family, the 3.9 v6, 5.2(318) v8 and the 5.9(360)v8. im not certain how the 4.7 responds to it. need somebody to confirm this by chiming in.

 

4.7 isn't really the easiest engine to mod. it will cost a pretty penny if you really want to get more out of it. stick with the basics, it would love some headers, can guarantee that. and your heart will melt with the sound. a DIY CAI would be a good way to go. a TB too, not a TB spacer tho, they do bubkus in FI motors. hmmmm, tuner i guess. do you have an e-fan? thats another way way you could go, doesnt 'give' you any HP, it just frees some up.