Reply to "FI Fuel supply"

Before you go too far down this road, first figure out what your future plans are for the Pantera. If they include somehow increasing output above about 450 bhp and then actually using that power, not only should you replace the fuel pump with a heavy duty type (either electric or mechanical) but also consider increasing the size of the stock fuel lines. The slightly-less-than-5/16" ID steel lines simply will not allow enough fuel to transfer, so you risk the engine going lean at high rpms over a minute or so of use.

The line coming out of the tank on early cars plus the brass banjo bolt is one restriction; another is the connecting line to the carb. Later cars use a same-sized fuel line built-into the late fuel sender so the same #1 restriction occurs- this is the only sender still available and it retrofits perfectly into older models. While I added my in-tank pump to an early sender, the completed assembly still fits into the unaltered tank & removes as-stock. Adding the late sender to an early tank gives you one extra fuel-out line so you can use one for fuel feed and the other for EFI return. Or simply plug the unused one until you need it.

If you want to alleviate this for future Bonneville or Open Road events, I've converted a few new senders to 3/8" ID fuel-out lines, good for a sustained 700 bhp. If you decide to use an in-tank electric pump, they also come as std & heavy-duty. When I added a std in-tank electric pump to our car, the pump sits in the bottom of the tank and comes with a stock replaceable Ford poly fuel filter that snaps onto the pump base. NO alterations are required to the tank.

Note- EFI requires different fuel filtration than carbs. Carbs will tolerate 40 micron debris at 7 psi while EFI needs about 10 micron filters that also must withstand up to 75 psi without blowing apart.