ballast resisters

desy500 PM'd a question about "EFI pump". I answer here for everybody. Electronic Fuel Injection pumps can output high pressure (~60 psig) for MPFI, but they can also be used for carburetors (~5 psig) or TBI (~20 psig). You can find a flow curve, giving flowrate vs output pressure. For those who worry about supplying a monster carburetor, even a small EFI pump probably outputs ample flowrate at 5 psig. Downside is you must have a return line to the gas tank (or at least upstream of the pump). It may also flow much more that your carb would ever need, thus waste electricity and heat the fuel.

I have 2 cars currently using an EFI pump w/ carburetor. I measure ~10 psi return, due to returning thru the 1/4" tube of the sender, so I plumbed a "pressure-reducing" regulator in series w/ the carb (dial wheel type), to not overwhelm the float needle. I plumbed the EFI pump because I plan later TBI or MPFI, plus want a "carb in trunk" as roadside backup.

There are 3 basic external mount EFI pumps I know of - Walbro, 1990's Ford Truck, & Bosch Jetronic. Walbro type has the best fitting selection. Ford pumps have only 5/16" outlets I think. Bosch type (M-B, VW, Audi, ...) usually have a check-valve fitting that requires a banjo fitting, which I bought at a DeLorean site.

If you will only use a carb, the Holley radial vane pumps or a little rattler pump (Mr. Gasket, etc) should work. If you mount on the rear frame rail, you will hear them thru the back seat, unless you design better rubber isolation than I had.