Where to mount in-line fuel pump?

[5.0 Fiend]

I have my car pretty much finished except for engine/trans lube, steel gear for the dist., and mounting my Holley red fuel pump. I have the relay and wiring all ready, (mounted in spare tire well), but now I need to mount the pump. I was underneath the car last night installing the driveshaft, and I was looking for a place to mount the pump, and I couldnt see a good place, a while back some suggested to mount it to the frame rail, but I couldnt see where it was, (I'm use to looking at the frame rails on rigs, maybe the mustang rail is tucked up in or something). Which side would the fuel lines be coming from the tank, and where should I mount the pump exactly, (give me specific locations, like here by the fuel tank or something), also why are there 2 fuel lines up in my engine bay, the car had a mech pump, and I only remember on line going to the pump, then one line going from the pump to the carb, (breather line? retun line?).


Also, does the oil pressure fitting fit on the front of the block by the timing cover? (the 84 engine used a mechanical gauge, and the 88 motor appears to have a white electric fitting stcing in the block by the timing cover, is this indeed what it is? I cant find where the mechanical fitting would go, and the electic one wont come out, so I am probably just going to buy an electric gauge if need be.
Any help would be greatly appreciated, thanks.

[Dark_5.0]

I mounted mine as close to the tank as I could get it on the passenger side. I fabricated a bracket and stuck it by the fuel filter.

[~The Jester~]

Fuel lines should be coming out of the top of the tank on the passenger's side. If the car is an '88, the other fuel line is a return. MAKE SURE YOU TAP INTO THE SUPPLY, or you'll have problems.

Oil pressure gauge is fed on the driver's side of the engine, down low, up front by the timing cover. Some of the cars with mechanical gauges even had a hex shaped "extension" tube coming from the block, to make room for the big bell shaped sender.

Holley RED???? I doubt I would run my lawnmower with one of those. That little red pump only puts out about 7psi MAX @ 65GPH if everything is 100%, which it usually isn't here in the real world. IF you're making any kinda horespower, that little fella won't keep up. If you can afford it, at least grab a Holley Blue and a regulator.

Hope this helps you out, Good Luck!

[5.0 Fiend]

The body is an 84, that's why I wondered why there were 2 fuel lines. The motor is basically a stock block 88 out of a Cougar, with Holley stealth intake, Holley 750 carb, some kind of headers, and side dumps eventually. I got the Holley red for 35$ rebuilt, and I thought it would be worth it for now instead of switching the timing covers over to a mechanical. If the car had EFI sometime before, how can I tell which line is the sending fuel line, and which one is the return?

[5.0 Fiend]

On another note, my Jeg's catalog says that the pump requires 3/8 npt fuel pump fittings, and that is what I bought at advanced auto the other day, and they were too small, what size are they?

[5.0 Fiend]

Okay, I figured out where to mount the pump, and I found the lines coming out of the tank, ( seems dangerous for as close the lines are to the over the axle exhaust).

I need to know what size pump fittings to buy, and would the bigger fuel line be the supply?

[Dark_5.0]

Found this picture while browsing the net and thought of this thread.

[~The Jester~]

Yep, the bigger line is the supply. The fuel pump is 3/8" pipe thread, not sure if they gave you the wrong stuff or what, but I'm 99% positive that the pump is 3/8" threads. Is it in yet? If not, take her with you to the parts store.

P.S. DO NOT go mechanical pump at this point. PIA to install, you'll need a new front cover, and the pump drive eccentric for the camshaft, and depending on what cam is in the car, it might not even have the correct holes in it to install the fuel pump eccentric. Then there's the whole rerouting the fuel lines, buying more fittings, making a steel line up to the carb, etc etc etc YUCKY!

[5.0 Fiend]

Yeah, I bought 2 3/8 fittings, too small, took the pump to the store, and they didnt have the right size, guess I'll have to try somewhere else.