Yes, you can either run it with or without a stuffer.  My opinion is that a stuffer creates a smoother transition from the impeller into the bowl and allows the pump to build thrust slightly faster than the without a stuffer.  A shouldered impeller has a pretty good gap between it and the back of the impeller hub, so it doesn’t blend the transition between the bowl and impeller perfectly.  Clearance exists between both the stuffer and the shouldered impeller and that volume still has to be filled with water before thrust is created.  You will really only notice a difference on the initial hit.

Cheers,

Joe

The early oval logo suctions are really thin, even compared to the later cursive logo suctions.  Both are known for cracking, especially when used with big power.  The Dominator is much thicker, especially in the flanges to help prevent cracking and  gasket failure.

little help?  How do you post pics on here?   

I looked the dominator impeller over again today.  The leading edge is banged up and some good scars in it.  The front shoulder has some deep groves also.  I would not use it.  (Will make a good wear ring installation tool) It also has a much shorter front shoulder and uses a short wear ring with a large gap between the suction side and the impeller.   The leading shoulder on the JC impeller is much longer and fills the intire wear ring to the edge of the intake.  Seems like a lot less chance for blow by.    I did find out the out side diameter of the dominator bowl is larger then the JC bowl by about 250 thousands, so the transom cover needs to be modified to fit over it.  Also the clean out cover sits down inside the intake 3/8",  going to machine that off on the mill.

Can anyone tell me how to post pics on here,  I have a billet loader that look really nice that I cant find any info on,  if I could figure out how to post a pic  I'm sure someone on here knows what it is.  Thanks

I have tried to post pics from my iPad and my phone. Haven't tried the computer yet. I go to attachments and choose the photo and it won't show up.  Not sure what the problem is.

Not sure about iPad, but on my S3, after selecting the pic, click ATTACHMENT.  You will see it hourglassing as the pic is attached to the post.

That is an interesting loader.  Any history on it?

No history.