One of the most difficult tasks of fuel-injection retrofit is gettingthe excess fuel returned to the fuel tank. A fuel return must beprovided in the fuel-tank sending unit for proper fuel control.

What happens when 440 ci of Holley 850-fed big-block tries to suck fuel from a 5/16-fuel line, a 37-year-old tank and pickup? Fuel starvation! That's exactly what brought our thirsty GTX clone to our ...