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Sean Marconette · 10-21-2015, 05:34 PM

If it's an Aeromotive A1000 it can do either carb or EFI, with just a regulator change.
How is the fuel pump positioned and where is it relative to the cell sump? Aerated fuel is possible if the elevation of the pump has to draw the fuel out of the cell. The pump should always have a column of fuel sitting on it, otherwise the vacuum it will pull can make the pump cavitate.

With the foam removed, the return could also aerate the fuel in the cell, unless as others have stated it has a length of hose to eliminate fuel dumping above the liquid level in the cell. With the foam installed that eliminates this issue.

What pump do you have?

Sean

10-21-2015, 05:34 PM	#11
Sean Marconette Senior Member Join Date: Mar 2006 Posts: 977 Likes: 793 Liked 275 Times in 76 Posts	Re: starts breaking up at 4500 rpm. If it's an Aeromotive A1000 it can do either carb or EFI, with just a regulator change. How is the fuel pump positioned and where is it relative to the cell sump? Aerated fuel is possible if the elevation of the pump has to draw the fuel out of the cell. The pump should always have a column of fuel sitting on it, otherwise the vacuum it will pull can make the pump cavitate. With the foam removed, the return could also aerate the fuel in the cell, unless as others have stated it has a length of hose to eliminate fuel dumping above the liquid level in the cell. With the foam installed that eliminates this issue. What pump do you have? Sean __________________ Sean Marconette 84 Mustang 5060 SS/N