Can a PDF document import JPGs without resampling them?

Question

I created a multi-page graphic portfolio booklet in Photoshop, with each page in its own folder for simple management.
The idea was also to create a lighter PDF version of this thing for online distribution.
Each page contains 95% images. Only a single line of text is present. I was going to save that text as line art (not merge it with the pixels).
Here is my traditional procedure for doing so :
Make the page/folder I want to save visible.
Save As PDF
Remove Photoshop editing capabilities, downgrade to 150dpi, High JPG Quality (not Maximum)
Do the same for every page in the booklet
Assemble the booklet by inserting pages once inside Acrobat
Now, for whatever reason, the images look like crap. I tried NOT downgrading to 150dpi, and they still look like crap. In fact, nothing short of Maximum JPG Quality + 300dpi (ie, no resolution resampling) will result in nice images.
I can resize to ridiculously low res inside Photoshop itself and it'll still look decent, but asking the PDF converter to do it botches everything.
Since this is a 95% graphical PDF document, I'm willing to do away with the line-art text, and just save all of these pages as JPGs. Flat traditional JPGs look 100 times better than what comes out of the other end of a PDF conversion.
My question is... can I use Acrobat to assemble these JPGs into a single multi-page document WITHOUT resampling them in any way?
In other words, without the PDF converter crapping them up all over again?

Answer 1

mjyeager wrote: Each page contains 95% images. Only a single line of text is present.
...per page, naturally (in case that was unclear).