Me?

Anyone else planning on doing this? My neighbor is a chrysler engineer and says these heads will bolt on no problem, but I'm not taking his word alone before I do some more research.

 

Sounds like fun,what are the bennies for this bolt on?


Blu_

 

These are the new heads used on the 2008 models right? Is that the only change they made to the 4.7 or are there others?

 

Well as I understand it, the pistons and rods are also different but I believe that wasto help with bottom end harmonics for a smoother running engine. The fuel delivery was said to have been modified but I'm not clear on what they changed. Then theirs the dual spark plugs per that will need to dealt with as far as the computer program change in the CAN-B system and the hardware for the spark delivery etc. I say it’s a bit more than just heads. It might be better to wait (if ever) for a 4.7 crate engine already to go with maybe 350 hp as crate engines are race bread but can also be street legal in some cases.

 

I thought I read something about there being 2 spark plugs per cylinder in the 2008 4.7.

 

you would be better off taking the stock head and getting that done. to much work for the 08 head to go onto the 05-07 motor with the new sparkplug design. plus it would be a waste.

 

Getting what done, adding another valve to each combustion chamber??? [&:][&:][&:]
Extra 50-70 hp is a waste?[&:][&:][&:]

 

That would be an interesting thing to utilize. We don't absolutly need to use the second plug, can just leave one in there to block the hole.

 

Well I was reading how the new motors in the dakota put out 303 HP, the 4.7 durango 304 hp and the 4.7 ram gets 310. So either way it would be a significant gain from our measly 235(?) HP we make. I know they added a spark plug(which is mostly for emissions) and changed fuel delivery alittle bit. But you find most of the power in your cylinder heads. Adding a valve in our CB will wake these motors right up.

 

If you think about it though, couldnt you just splice the feeds for the coils to make two coil packs per cylinder hot?