Question about fuel system

Does the carburator have to be fed from the front or can it come up from the back. The way I want to run my fuel line is up the fire wall to regulator then to carb from the back. The reason I ask is because every set up I see the lines to the carb come from the front but I want a cleaner looking set up. This is in my 95 F150 that I'm slowly putting my fuel system together, gonna use electric pump and 3/8 line all the way from tank to carb. What do yall think.

Yes you can feed it from the back

You know nothing should be mounted to firewall, fuel wise.

342g wrote:You know nothing should be mounted to firewall, fuel wise.

Never really thought about it but why not? The regulator will be mounted on the back of the intake and run fuel line up back behind the motor with only a clamp or two holding line at firewall.

Harolds right, you shouldn't mount anything with fuel to the fire wall. But you could mount the stuff to the inner fender or such.

NHRA Rule was , no fuel line within 6" of firewall .

Okay, well gonna rethink it then. Thanks guys, didnt know it would be unsafe plus its a street application. The fuel lines for the i6 that was in it ran that way so I didnt see any problem.

Here are the two area's in the NHRA general regs that seem to apply if you ever want to race this vehicle.

1:5 FUEL SYSTEMS
Location: All fuel tanks, lines, pumps, valves, etc. must be outside
of the driver’s compartment and within the confines of the frame
and/or steel body. Cool cans, fuel-distribution blocks, etc. must be
located at least 6 inches forward of the flywheel/bellhousing area on
rear-wheel-drive (RWD) vehicles, and on opposite side of
flywheel/housing area on front-wheel-drive (FWD) vehicles. Fuel
pressure gauge isolators, with steel braided line, may be mounted
on firewall.

Lines: All non-OEM fuel lines (including gauge and/or data
recorder lines) must be metallic, steel braided, or NHRA-accepted
“woven or woven-pushlock.” A maximum of 12 inches total (front to
rear) of non-metallic or non-steel braided hose is permitted for
connection purposes only; individual injector nozzle and motorcycle
fuel lines are excluded. Fuel lines (except steel braided lines) in the
flywheel/bellhousing area must be enclosed in a 16-inch length of
steel tubing, 1/8-inch-minimum wall thickness, securely mounted as
a protection against fuel-line rupture. Fuel lines may not be routed
in the driveshaft tunnel. It is mandatory that fuel lines passing
supercharger drive belts be steel braided, NHRA-accepted woven
or woven-pushlock, or be enclosed in protective steel tubing. A
current list of NHRA-accepted woven or woven-pushlock fuel lines
is available on NHRA.com. All NHRA-accepted fuel lines must use
ends that are specifically designed for the type of fuel line being
used. No hose clamps allowed on NHRA-accepted fuel lines.

dkp

Here are the two area's in the NHRA general regs that seem to apply if you ever want to race this vehicle.

1:5 FUEL SYSTEMS
Location: All fuel tanks, lines, pumps, valves, etc. must be outside
of the driver’s compartment and within the confines of the frame
and/or steel body. Cool cans, fuel-distribution blocks, etc. must be
located at least 6 inches forward of the flywheel/bellhousing area on
rear-wheel-drive (RWD) vehicles, and on opposite side of
flywheel/housing area on front-wheel-drive (FWD) vehicles. Fuel
pressure gauge isolators, with steel braided line, may be mounted
on firewall.

Lines: All non-OEM fuel lines (including gauge and/or data
recorder lines) must be metallic, steel braided, or NHRA-accepted
“woven or woven-pushlock.” A maximum of 12 inches total (front to
rear) of non-metallic or non-steel braided hose is permitted for
connection purposes only; individual injector nozzle and motorcycle
fuel lines are excluded. Fuel lines (except steel braided lines) in the
flywheel/bellhousing area must be enclosed in a 16-inch length of
steel tubing, 1/8-inch-minimum wall thickness, securely mounted as
a protection against fuel-line rupture. Fuel lines may not be routed
in the driveshaft tunnel. It is mandatory that fuel lines passing
supercharger drive belts be steel braided, NHRA-accepted woven
or woven-pushlock, or be enclosed in protective steel tubing. A
current list of NHRA-accepted woven or woven-pushlock fuel lines
is available on NHRA.com. All NHRA-accepted fuel lines must use
ends that are specifically designed for the type of fuel line being
used. No hose clamps allowed on NHRA-accepted fuel lines.

dkp

No racing for now but the occasional tnt is not out of the question, or the occasional redlight drag against a ricer. I do want to be safe, and have a clean looking engine bay without a lot of clutter, that was the only reason for asking, but like I said rethinking the layout, and thanks for the info, very helpful.