Not knowing your exact combo, it's hard to give a definite yes or no. But I will tell you that every little bit helps. A stuffer is just another piece to the performance puzzle. Seat of the pants difference in a lake boat? Prob not. Time slip difference in a drag boat, good chance yes.

And I see there are many different types of stuffers the one I was looking at is a from Berkeley by the time it gets shipped here will probably be a little over $200 I have a 1978 Ford 460 Miley built probably around four hundred horse I'm running a and power with an inducer it has a divider on it I've also heard people talking about this particular stuff that you could have an oil leak because you're drilling into the oil passage of the pump housing

This is the stuff from looking at

other than looking pretty i really dont think the cone does anything....

5 dollars in material and you cna have someone make you a stuffer that fits a lot better after measuring your impeller to bowl clearance.

something like this

The four counter-bored holes towards the center of that Berkeley billet stuffer are for attachment.  Drilling and tapping in that intended location breaks through into the oil reservoir of a Berkeley bowl.  The instructions direct the use of silicone on the threads to prevent leaking.  It would be better to drill and tap the perimeter for 10-24 countersunk screws like in Steve's picture.

The concept behind that Berkeley billet stuffer plate is that it displaces as much volume as possible, particularly around the back of the impeller hub.  Water will churn, generating fluid friction.  The tight-fitting stuffer removes a large volume of that water.  Not sure there is any difference between that and the plate style other than about 3.5lbs of aluminum.  I can tell you that most of the record holding boats have a plate style stuffer.

I don't believe that installing a stuffer can be detrimental (except for drilling into the oil reservoir).  I do think there are better areas to spend money on that offer more performance per dollar spent.  I think Brian is absolutely right, you will most likely never notice the difference.

Thank you all for the great information I think I'll save my money for a set of aluminum heads

I didn't pay too much attention to where that Berkeley stuffer bolt holes went through. Looking at it now, yes using that one will drill into the oil passage and possibly create a leak. If you were to install a stuffer, i'd go with the plate style.

Yes I've been looking at several different designs and I think I can make one myself the only part is turning down the poem that I won't be able to do

Yes I've been looking at several different designs and I think I can make one myself the only part is turning down the impeller that I won't be able to do

Why would you turn down the impeller? Did I miss something?

GT

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The ones I have read about that have a flat stuff for in them you have to turn the Impaler down from what I understand

This style

If you have to turn the impeller down to clear a plate,  either; 1, the impeller is too far rearward,  or 2, the bowl has been milled and you don't need it.

Either way,  measure everything,  with dimensions it all Kay a crap shoot.

Don't forget to allow for the gasket.

GT

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This.

I guess my next step should be to measure between the impeller and the bowl

GT

Reading some of the stuff will get you more confused than anything