Hi SuperCobra. I chose the pump to use based on a number of factors:
1) Form and fit:
- The pump had to be of the right OD to fit inside the SW240 bored out casing.
- The pump had to be the right length to fit inside the SW240 casing.
- This turned out to be a compromise as I wanted to retain the filter housing/bail wire/retaining thumbwheel on the bottom of the pump and the cover at the top of the pump.
- I also wanted to retain the side inlets and outlets for the fuel lines, but as it turned out I was only able to retain the lower side inlet and had to come out thru the top cover with the outlet.
- See the attached crude drawing/image with the new electric pump superimposed in the SW240 casing
- You can see the new pump’s inlet will line up with the SW240 side inlet with the use of a 90deg fitting, and the top 90deg outlet of the new pump protrudes thru the top cover of the SW240 case.
- I was able to run the new pump wires thru the SW240 side switch housing.
- I ultimately put a few strips of foam around the new pump so it fit snuggly in the bored out SW240 case.
2) Function:
- Wanted a pump that provided reasonable flow and pressure knowing I would be running two pumps in parallel.
- For my street application and about 400 to 425 HP I figured a combined flow of two 30 GPH pumps using a ½” line to the carbs would be enough.
3) Choice:
- Chose an AIRTEX pump # E3073 sold at NAPA (#AFPE3073), O’Reilly’s(#AIX E3073) and AutoZone (#E3073) with O’Reilly’s being the cheapest at $48.00
- Spec of the pump is 30 GPH at 5 psi.
4) Fittings and piping:
- Individual choice. I chose to have some SS tubing and fittings welded up as manifolds to connect the two pumps.
5) Bling:
- I painted the SW240 body a bronze color, and had the top cover , switch cover, bail wire, thumbwheel, filter canister, mounting band and manifolds chrome plated.