Inliners International Forums General Discussion Engines Need help identifying sensors on a 1973 250

Hi,
I agree on A, C, and D.
B goes in the oil gallery I think.
(I want to guess choke related.)
The coolant drain is on the other side of block.
E is a connection for a PCV, should be going into intake plenum.

I too, leave room for being wrong.
Early 60's engines have less holes poked in them.