Steve Baur
Former Editor, Modified Mustangs & Fords
April 9, 2013
Our subject ’73 Mach 1 was put in the capable hands of Carriage Automotive in Apollo Beach, Florida. Tech John Potter started the fuel system installation with the removal of the gas tank.

There’s no question that car parts whittled out of billet aluminum are cool. Over the last two decades, the use of billet products has increased steadily, to the point that many of these products are financially feasible for even the most fiscally challenged enthusiast. What was once thought of as high-end aircraft or racing fare is now available to everyone.

Holley, long known for its “blue” and “red” electric fuel pumps, recently introduced its HP line of billet fuel system components to offer another option for enthusiasts looking to run an electric fuel pump, to have a fuel system that can support further engine modifications, or perhaps those just wanting something a little fancier than the previous designs.

When the mechanical pump on one of our co-worker’s Mustang went down for the count, a call to Holley had the company’s HP billet fuel system components boxed up and headed to our office. Holley also provided us with a number of Earl’s Performance Plumbing fittings and fuel line to complete the fuel system remodel.

The folks at Holley told us that their HP line of pumps were really quiet, so quiet in fact that we wouldn’t be able to hear them at all. They were right. Each of the components also looks great, and the black nylon braided Pro Lite line fits the part as well. And if our car’s owner decides to go with fuel injection down the road, the Holley HP fuel system will be ready. Here’s how it went together.

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10. The supply line from the regulator was run across the intake manifold and hooked up to the fuel log.

11 As we would need to install a return line for this system, the first thought was to utilize the stock air vent, however it proved to be too small of a diameter to offer sufficient flow. Potter remedied the situation by using this, ahem, GM piece. It worked perfectly, we just needed to cut the proper hole in the tank to install it.

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15. Finally, we set the fuel pressure to 6-7 psi as recommended by Holley.