Thread: Installing Fuel injection '55 Bel Air

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Adding fuel injection to any intake manifold is easy.
Attached is a picture of injection added to an aluminum manifold.

The injectors fit into bungs that are welded into the manifold so that the injectors squirt into the ports. The bungs can be purchased from several vendors or made if you have a lathe. To feed the injections, the rails are aluminum extrusion that is an inexpensive purchased item. You tap the ends for fittings. Where the rails meet the injector tops, the rails are machined with a counterbore looking feature. Special clips hold the rails to the injectors.

The thing that replaces the carburetor is the air meter. It has no gasoline touching it. It has a couple of sensors; one is the throttle position sensor that tells the computer how open the butterflies are and the manifold absolute pressure which is akin to an electric vacuum gauge. there is also an IAC or idle air control valve that screws into the air meter. You can buy the air meter from MSD or several other places.

There are several other sensors such as the water temperature sensor, the inlet air sensor, and some crankshaft/timing sensors.