I'm swapping a eagle 5.7 into my 70' Duster and I see that the larger tube TTI's have a round over sized port. I am new to Gen 3 Hemi's but I believe the 6.4 and the eagle 5.7 have the same exhaust port shape. They don't list the 5.7 as fitting there larger tube headers. Has anyone used the round port on the eagle 5.7? Thanks
Will the 1 7/8" and 2" TTI headers fit eagle 5.7 heads?
- Thread starter bignick
- Start date
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Contact them if you have questions. They had a pretty good technical service department.
DionR
Well-Known Member
Weird that they would leave out the Eagle 5.7 motor. I know the 6.4/6.1 exhaust manifold bolts to them just fine. That said, I didn't think any of them had a large round port like that. I thought they were a D shape.
Run them. I have a 6.1 based 426 with heavily ported early heads that have the square ports. It dynoed just fine with the TTI 2 inch long tubes. Think how far down and how much work it would be to shrink that 2 inch tube to match the port.
I think your correct, the more I look at headers the more companys I see using the round port. I've also seen some porters using the round gasket to open up the exhaust and change the design of the port for more flow. I know this little eagle motor won't need a 2" header but when I build a bigger motor it would be nice not to have to buy new headers. I was also surprised on the port work. I'm going to start another thread on that.
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