quote:Using the bottom drain plug is just too low. There are only a couple of fittings that will fit the drain and they will hang down in harms way.
WRONG! The fittings are well out of the way. The chassis frame rails are the lowest point on the car at that area. And if you've hit something that can reach up and shear off the fuel fitting from the bottom of the tank, it's already taken out much more of the underside of your car, so the fuel fitting will be the least of your concerns.
quote:Banjo fitting or a close type ell at the tank drain fitting? What size? (AN-8 or larger)
Do NOT use a banjo fitting if you have a modified engine. Banjo fittings substantially restrict fuel flow.
I re-plumbed my fuel line from the bottom of my tank and installed a Groco stainless marine 90-degree fuel petcock so I can shut off fuel flow in the event I need to service the fuel pump or a fuel line. This has proven to be a VERY handy feature when changing the fuel pump and subsequently pulling the engine again. No clamping the fuel line with vice grips or some other kludge! It's also a nice added security feature. The car won't get far when the fuel supply is shut off!
http://www.groco.net/seacocks.htm
The 1/2" male threads allow it to thread directly into the metric plug bung in the bottom of the tank. Initially it didn't seal completely - it had a drip. Then I reinstalled it with commercial grade fuel-safe pipe dope (thread compound?) and an O-ring from my local O'Reilly Auto Parts store (one of those generic "Help!" packages that contained various sizes). It hasn't leaked a drop in a couple years now!
This valve is 1/2" throughout, so no tight banjo fitting to restrict fuel flow to my 383C stroker engine. Also, it fits snug up against the tank so no part of the fuel system hangs below the frame rail, therefore nothing to get knocked off if you hit a speed bump or have an off-road adventure.
I'll take a picture tonight.