Packard Forum Index » Pre-War (1899-1942)

Assuming the design did not change, here are some pictures from a 1948 22nd series 356 engine (installed in a 1940 Model 1803)

Can't help with measurements but looks as the tube just hugs the space between block and bellhousing and points down with a straight end instead of a bevel like other engines had. Maybe a clamp at the top to hold end to the block outlet and a tab welded on at the lower middle to hold it to the bellhousing. End looks like maybe 2-3 inches below the bellhousing. In taxi engines believe the tube was replaced by a brass pcv valve plumbed to a vacuum port on the intake manifold below the carb.

Other manuals describe the operation as when air passes around the end of the tube the disturbance creates a suction effect which pulls gasses out of the crankcase.

Attach file:

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  tube1.jpg (136.53 KB)


  tube2.jpg (121.46 KB)