Weird valve/opening at back of lower intake...pcv? (pic)

[Cobra912]

Hey guys quick question. A friend of mine picked up a mint 65 with a a 289. It has the a hose running from the air cleaner assembly to a factory looking driver's side valve cover. However on the back of the lower intake is a what appears to be a small "pipe" with nothing attached and an opening on one side of it. It starts smoking a bit when the temps get up. Is there supposed to be a hose attached to this to reroute this somewhere? Help???

 

[Cobra912]

 

[Az Pete]

Looks like what was part of a road draft tube from older engines. They had a steel tube down from that area to the under side of the car to allow any blow by to exit under the car. Before PCV valves were in heavy use.

 

[2+2GT]

That's exactly right. That's the top portion of the early 64-65 road draft tube. A 1" steel tube was originally attached to that, and extended down the RH side of the bellhousing to an angle-cut (rear facing) tip below the engine, to draw fumes out of the crankcase when the car was moving. There was also a tab attaching the tube to a bellhousing bolt. Pefectly good system, but pollution regulations changed to require a PCV system to burn these fumes. The tube was only tack-welded at the top, I've seen a number of them come apart as yours has. You could easily make a new tube using ordinary conduit, if you can't find one.

 

[2+2GT]

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[Cobra912]

very nice. Thanks a lot for the help. mystery solved.