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Here I cover the conversion of my 408W from an Edelbrock carburetor to a Mass-Flo electronic fuel injection system.
After alot of research and time spent weighing the pros and cons of each system type. I settled on a Mass Air efi setup instead of the Speed Density systems that are so prevelant. The reason I did this was to minimize the amount of time spent tuning the system and maximize the amount of time I had to drive the car. Also the mass-air efi systems are more tolerant to changes in climate, altitude, and modifications.
I opted for the complete fuel system offered by Mass-Air EFI, which came with absolutely everything necessary to install the complete fuel system, mInus a custom bracket for the pump that I made. I tried pricing the parts out individually and putting my own system together, but I would've ended up spending more and getting less. This fuel system is superb.
The first step was to survey the underside of my 40yr old Mustang, and decied what route to take when plumbing the fuel system. I settled on running everything down the passenger side of the vehicle. This was to avoid running around my larger than stock power brake booster and there's just more clearance on the passenger side of the engine bay. It also helped that the output of the fuel pump faced the passenger side with the mounting bracket in it's stock position.
After deciding on a route for the lines I had to figure out how to mount this impressive pump so it would be low enough, at or below the bottom or the tank, and still not in danger of being struck by road debris. I had to fabricate a bracket that mounted to the underside of the trunk, just ahead of the fuel tank, and just the the right of the fuel pickup.
I'm fortunate to own a gasless MIG welder, I highly recommend picking one up. I believe it's an indespensible tool when working on old cars. The bracket is simply a 4"x5 1/2" sheet of 14 ga mild steel bent in two places and a second piece of 14 ga mild steel welded in to provide additional support for the heavy pump. I used four 5/16" bolts with lock washers to mount the bracket to the underside of the trunk, and a 2"x4" piece of steel drilled to match the pattern of the bracket. This is inside the trunk rather than fender washers to ensure the bracket is very secure. The pump was then fitted to the bracket using the supplied hardware. During fitment make sure you have plenty of clearance from the axle, and all other surfaces. You'd hate to have that pump rattling against the floor pans or rear sway bar.
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