Well, while my motor is taken apart, I decided now would be the best time to port and polish the cylinder head. The intake ports are already port matched to the manifold. The exhaust ports were port matched to the stock manifold, but since I got a set of headers, I decided to port match and polish just the exhaust port. For those that don't know, when you port out the cylinder head, you can increase the air flow. On the intake side, you need a rough texture in order to create air turbulence to atomize the fuel on the way into the cylinder. On the exhaust side, you want a mirror finish. The smoother the better to quickly expel the exhaust gasses away from the motor. I would only port if you are using a set of headers. If you have already ran the engine with headers and would like your heads ported, you can send them down to me in Atlanta to do so for a small fee. It does cost about $75 in bits for the die grinder to port out each head. The bits do wear down fast and have to be changed often. Here are pics of my first HEMI porting job.

https://dodgeforum.com/forum/members...ild-17107.html

 

 

I hope for your sake your engine runs good. Without a flowbench, you could have caused a real headache.
The intake ports do need to be a bit rough, but they also need to match the porting of the exhaust so they "mingle" well with each other. The biggest factor would be one cylinder running hotter than the next one which can cause burnt/scorhed valves.

So, let us know how you make out. I'd be afraid to do such a job as these computer controlled vehicles are much different than carb'd one's and can be particular in the porting. Don't mean to burst your bubble or ruin your hard work. just letting everyone know to be cautious is all.

 

It's not the first time doing this to a modern engine. I've done at least 25 engines made between the years 95 and 2010. Also, how would you know if I got access to a flow bench or not? I have a buddy that has one in his machine shop. Just first time trying it on a HEMI. I got another set of heads that are still stock just in case.
The main reason is for port matching to the headers for smoother air flow.

Also, changing the shape also changes the exhaust tone. I'm curious as how this will sound.

 

Once again where are you while mine are off!! Looks good tho

 

In Atlanta. Those pics are just from the port matching on the exhaust. I haven't started polishing the ports yet. I figured I'd do all the cutting first. It will take me a week to finish a set of heads mainly because I can't quit my day job to do it.

 

I took the day to clean my garage up a bit and getting ready to put the newly ported heads on. Also doing a little engine dress-up. First time modifying a HEMI cylinder head. When it's done, I'll have my pics up.

 

Good!

 

Got pictures. The album can be viewed here : https://dodgeforum.com/forum/members...ild-17107.html

 

She runs like a champ. I can definitely tell it made a difference in the mid/high rpms...3K and up. I'll let yall know the hp and torque numbers when I get a chance to get them.