oiling · FF-0207

What were the two holes in the Flathead intake manifold for?

Ed says one was the fill pipe for oil and the other was the draft tube. The draft tube was cut at an angle, so driving down the road created a little suction that drew the air out of the engine.

Expert

Ed Smith

Evidence

expert attributed

Component

oil fill pipe and draft tube

Applicable scope

Ford Flathead V8 with the later intake manifold