Camaro 1973 Camaro Type LT
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Fuel System Installation (October 7, 2009)

This page documents the installation of the fuel system that I installed in the car. The goal of my fuel system was to design and install a system that could grow with my car. I didn't want to install a system that I would outgrow or need to change to run fuel injection. As seen in my previous updated, I installed an in tank electric fuel pump. This pump would give me enough pressure to run a fuel injected system if I want to in the future. I built the system with 1/2 inch aluminum hard line from the front to the rear. The hard line is flared and connected to the tank and the regulator using -08 Summit Racing Braided Nylon Hose. The regulator is an Aeromotive Universal Bypass Regulator, model number 13301. This regulator can be adjusted to 3-65 psi. The regulator comes with 2 springs. One spring is good for pressure ranges from 3 to 20 psi. The second spring is good for pressures from 20 to 65 psi. The regulator also has a return port to return unused fuel back to the tank. I am also running 08 Summit Racing Braided Nylon Hose from the regulator to my Holley 650 double pumper carburetor. I have also added a 1 inch spacer under the carburetor. Lastly, I used a Mr. Gasket universal throttle cable and a Holley billet Holley Throttle Cable Bracket.

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Status photos as of 10/07/2009:

Here is the regulator installed on the front right framerail. NHRA rules requires the regulator to be installed 6 inches forward or aft of the firewall/bellhousing. This picture is from before the engine was installed.
Here is the Russell aluminum fuel line. The line is 1/2 red anodized aluminum fuel line and that comes in a 25 foot roll.
Here are all the Summit black -08AN fittings, black Summit Racing Braided Nylon hose and the Trick Flow TFX 10 Micron Inline Fuel Filter.
Here is one of the completed braided lines. Building the nylon lines using the Summit hose ends was easy to do. I would wrap the line with tape and cut the line using a cut off wheel. I then assembled the line using a vise and an adjustable wrench. I wrapped the fittings with tape to avoid scratching the surfaces. The only other additional step was to use a little oil in the hose to lube the fitting during installation. Here is a sample of the flares made on the aluminum lines. The AN fittings require a 37 degree single flare. The flares use a tube nut to connect to the fitting and a tube sleeve to support the flare in the fitting.
The Trick Flow filter is mounted in the rear of the car right after the pump. I used conduit brackets and some rubber strips to mount the filter under the trunk.
I ran the hard line by following the frame rails and subframe connectors. I used insulated 1/2 clamps to mount the line to the car. The line is on the outside front frame rail and moves to the inside at the end of the front frame rail. NHRA rules requires hard lines to be protected like this.
Here is the carb dual feed fuel line. It has a -08 fitting on one side and a fuel pressure gauge on the other side.
Here is the stock throttle cable and aftermarket bracket that I originally had on the engine. As you can see, the additional height of the Holley manifold put the cable at a bad angle. This would only be worse with a spacer installed. I was able to pick up this Holley billet throttle bracket up cheap.
After mounting the bracket, I noticed that someone had cut the carburetor mounting arm at some time. They cut the top half off that included the hole that the return spring bracket was to mount to. I welded some steel to the top of the throttle arm and drilled a hole in in so I could mount the return spring bracket.
I also picked up a 1 inch carb spacer and installed it to gain additional carb clearance to the manifold and gain some top end power.
Here is the carb installed on top of the spacer. This combination pushed the limits of the factory throttle cable. I decided to replace the throttle cable with a Spectre Universal Throttle Cable.
Here is the feed line from the regulator to the carburetor. I used -08 braided hose for the line.
Here is the completed fuel system with a 14 inch diameter Cal Custom Chrome drop base air cleaner with a 3 inch high filter. This complete setup still has a few inches of clearance with my cowl induction hood. Some day I will add a 4 or 5 inch tall filter.

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