It all depends on the engine design, v8's 4.7 can have just as much horse power as a v8's 5.9 it all depends on how its built.

 

considering i have a 2005 4.7 with about every motor option you can get, an a 125 shot of hemi nitros, i can safely say my 4.7 jusy kicks a$$, but the 5.9 has a great block to start as a building foundation, could get up to 600 plus if you turn it into a 408. but if you leave both motors stick an go about your business. the 4.7 is a more efficent motor. the 5.9 tends to be a gas hog

 

God Damn! Already been said! lol.

 

It all depends on what you want, speed or towing power. I haven't heard anybody's opinion about either one. I have a '03 Dakota 4.7 and I can honestly say I've been very impressed. I have a 20' Triton bass boat, and that 4.7 pulls like it's nothing. I can't say anything for the 5.9 because I don't know a whole lot about it. It's funny this post is 5 years old; you can tell the difference in the amount of mods available for the 4.7 compared to the 5.9.

 

I don't know much about the 4.7 but isn't it a OHC motor?

 

yeah its a SOHC motor.

 

Well then it should have more potential if the performance parts are available.

 

Thats the thing, the market for the 4.7 is no where near the market for a 5.2/5.9. They don't make heads and cams and intakes. Its hard to even find s/c'er kits for them.

 

try just about impossible for all of the above ^^^^^^

 

I'm partial to the 5.9 or should I say 6.7 :-)