Ben. Many 1950's vehicles had vacuum operated windscreen wiper motors. Our 1954 Ford Consul did. Certainly some of the Ford V8 distributors had vacuum advance /retard mechanism. My P1 amonst them. Therefore I wonder if that is the reason for your intake manifold holes. If the engine was ex a commercial vehicle it may have had vacuum assisted brakes . Dave
22 November 2020 at 8:35 PM #5585
Jane Loveys
Member

Ben. Many 1950’s vehicles had vacuum operated windscreen wiper motors. Our 1954 Ford Consul did. Certainly some of the Ford V8 distributors had vacuum advance /retard mechanism. My P1 amonst them. Therefore I wonder if that is the reason for your intake manifold holes. If the engine was ex a commercial vehicle it may have had vacuum assisted brakes

. Dave