Fuel line routing ?

[1980c10]

Okay so this will be on a turbo 351w setup, I want to have the fuel line and return come in and exit at the back of the motor, and just a cross over line on the front. But im trying to keep it as clean looking as possible, so I dont really want my lines coming from the frame rail under the hood. I was thinking of bringing them to the middle of the car across the tranny X member, then mounting them to the tranny tunnel with some cushion clamps and running them up to the back of the engine over top the tranny. Here is a pic of what im talking about. Do you all see any problem with this as long as it is kept away from moving and hot parts? Will it pass tech inspection at a track?

Or do you all have any ideas of your own to keep it nice and tidy under the hood?

here are my two ideas

[Heretic]

On mine I just re-used the stock lines for the vv carb setup. I plumbed in a Walbro pump and a filter, then ran -8 feed and -6 return up to the motor. This is all on the drivers side, the Lightning rails I am using has springlock fittings that face towards the drivers side so it all worked out. Eventually I want to change it out and run -8 and -6 all the way back to the tank.

[Outlaw440]

The 1st pic is pretty much how the stock EFI 302/351's are run in the truck motors.

As far as passing tech inspection, certain things will depend on how fast you are running, but one solid rule is that no matter what; the fuel pressure regulator has to be at least 6" away from the firewall. Other than that i think you should be fine.

[gadget73]

I'd probably leave them on the frame rails and have them come to the inside of the "knee" under the A pillar and tie over to the firewall with something flexible to allow for any body to frame movement. Just have to be real careful about where the fuel lines are relative to the exhaust. Only reason I wouldn't run lines across the trans crossmember is just for the fact that if you need to replace the trans, the lines are going to be in the way of removing the crossmember if needed.

[P72Ford]

I'd probably leave them on the frame rails and have them come to the inside of the "knee" under the A pillar and tie over to the firewall with something flexible to allow for any body to frame movement. Just have to be real careful about where the fuel lines are relative to the exhaust. Only reason I wouldn't run lines across the trans crossmember is just for the fact that if you need to replace the trans, the lines are going to be in the way of removing the crossmember if needed.

I agree with this.

+1 on the regulator being 6" forward of the firewall. I failed tech inspection for that this past spring. Nothing like a last minute modification to get the car in the gates.

[1980c10]

I was reading some rules, it says no part of the fuel system can be mounted to the firewall pretty much. Also fuel lines cannot be in the driveshaft tunnel, But when fuel line are ran in the bell housing area they must be inside of a .120 wall tube to protect them from the flywheel. So technically since the fuel line wont be in the driveshaft tunnel only the tranny tunnel, and the regulator will be mounted to the intake, if I put the fuel line in the tubing it should be legal.

Also, gadget73 the lines wouldn't be mounted to the crossmember my mistake in the discription I was mounting them to the floor of the car right above the crossmember

Sorry for the rambling I have a million things running around in my head right now LOL

[1980c10]

The rules I read

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) cars, and on opposite side of
flywheel/bellhousing area on front-wheel-drive (FWD) cars. Fuelpressure-
gauge isolators, with steel-braided line, may be mounted
on firewall.
Tanks: When permitted by class regulations, fuel tanks located
outside body and/or frame must be enclosed in a steel tube frame
constructed of minimum 1 1/4-inch O.D. x .065-inch chrome moly
or .118-inch mild-steel tubing. All fuel tanks must be isolated from
the driver’s compartment by a firewall, completely sealed to
prevent any fuel from entering the driver’s compartment. All fuel
tanks must have a pressure cap and be vented outside of car
body. A positive-locking screw-on fuel-tank cap is mandatory on all
cars. Insulated fuel tanks prohibited. When used, fuel cells must
have a metal box protecting the part of the fuel cell that is outside
of body lines or trunk floor, excluding hose-connection area in rear.
Non-metallic fuel cells or tanks must be grounded to frame.
Lines: All non-OEM fuel lines (including gauge and/or datarecorder
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 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. NHRA-accepted woven or wovenpushlock
fuel lines: Aeroquip FC300, FC332; Aeroquip Star Lite
200; AQP Socketless; Dayco Imperial Nylo-seal tubing; Earl’s
Prolite; Fragola Performance System Series 8000 Push-Lite Race
Hose; Gates LOL Plus; Goodridge 526; Goodridge 710; Russell
Twist-Loc 836 and XRP HS-79. Contact NHRA for updates.
Pumps/Valves: Cars with non-OEM-type mechanical fuel pumps
must have a quick-action fuel-shutoff valve within easy reach of
driver and be located in the main fuel line between the fuel tank
and the carburetor and/or injectors. Fuel-recirculation systems not
part of normal fuel/pump system prohibited.
Fuel/Air: Any method of artificially cooling or heating fuel
prohibited, except for cool cans. Wet towels, rags, ice, etc. must be
removed before vehicle leaves staging area. Intercoolers may be
cooled with nitrous oxide or freon. Liquid intercooler tanks limited
to maximum 3-gallon capacity, may use water/ice ONLY. If located
in driver compartment, must be securely mounted to frame or
frame structure.
Alternative Fuels: Containers for alternative fuels must be
permanently labeled by the manufacturer as suitable for CNG or

[gadget73]

Just seems to me they could get damaged during a trans swap. I like the idea of lines being protected by the thick steel frame, not just screwed to the bottom of the sheet metal floorpans. Also, there comes the matter of the screws to clamp it to the metal. Either you use machine screws and cap nuts or you end up with the pokey end of the screws sticking through the floor. Screw things to the frame and its not going to be a cutting hazard.

If you're using stockish fuel rails, have a look at F150 or F250 rails. I think they have long stainless flex lines that run from the back of the rail down to a connection at the frame. That might be a drop-in for what you're planning. The connections are at the rear of the rail in any case, so it might be a start point.

[DuceAnAHalf]

good thing the tracks here never tech'd. i have my regulator mounted to the firewall.

[1980c10]

Okay, so here is my last and completly legal idea I think haha. Have the lines run up to the engine X member and cross over to the engine on it, then have cushion clamps mounted in the oil pan rail area and mount the lines to the cushion clamps and have them come up the front and go back on the front. Almost like factory routing just a little more hidden in the crossover area? what do you think? This will be on a super vic efi intake BTW if you were wondering how I was gonna mount the regulator to the back of the intake and keep it 6'' from the firewall.