Headers and head shape question.

[El_Dude]

Shopping around for headers and watching Youtube install videos, I noticed something inconsistent that hopefully someone can help clear up for me.

Did the Hemi engine head change the shape of the holes that go out to the exhaust manifold at a certain year?

Some videos seems to show the heads with D shape holes and some heads have an oval-ish shaped hole. Not all videos have the truck year in title or description so I'm not able to tell which years have which shape.

This link, for example does show 2015 in the description and the head holes are oval-shaped. Go ahead and forward to 4:05 so you can see what I mean.

It makes me question what I have in my truck, 2019 1500 Classic.

I rewatched some of the videos, and now I'm wondering if it's just the angle of the camera that makes them look oval.. I'm not sure. haha

Anyone can clear for me, please?

Thanks.

 

[Lyle Longboat]

There circles........

 

[pacofortacos]

Did the Hemi engine head change the shape of the holes that go out to the exhaust manifold at a certain year?

Yes. Many moons ago. A 2015 should have the D shaped exhaust ports vs. the early square ports.

 

[El_Dude]

ok thanks. so the newer ones have circle holes? or are you saying 2015 and up have D shape?

 

[RedSRT4Me]

ok thanks. so the newer ones have circle holes? or are you saying 2015 and up have D shape?

2009 is when the Eagle hemi head was released if I'm not mistaken. You are correct seeing two different head shape ports.

 

[El_Dude]

I'm having trouble finding JBA headers many are recommending to get. All the ones I find online seem to be for older rams with either square holes or Dshaped holes. The only ones I see that have circle holes are the BBK headers, which I don't want to get. Is there a link that can be provided for the JBA's that would fit my truck year?