Re: Proud New Owner of a 49 Packard Club Sedan
Posted by HH56 On 2018/9/10 15:40:21
If there is definitely no crankcase return oil port then the filter would have taken oil from the lower port, passed thru the filter and then back into the engine via the upper port. For the 356 block with hydraulic lifters there was an article issued advising mechanics to drill and tap a hole into the crankcase for the return oil port. This was done when the plumbing was changed to add the pigtail feeding the lifters directly as well as have the filter supplied from the lower port.
Apparently the 288/327 block being primarily solid lifters until 51 kept the arrangement with the filter feeding into the lifter gallery port. When hydraulic lifters were being installed as more the standard rather than the option then the return port into the crankcase must have been added.
Here is a 48 article on how to install the filter which must have been for blocks with no crankcase return port to which the optional filters were added.
Attach file:
(135.89 KB)
Apparently the 288/327 block being primarily solid lifters until 51 kept the arrangement with the filter feeding into the lifter gallery port. When hydraulic lifters were being installed as more the standard rather than the option then the return port into the crankcase must have been added.
Here is a 48 article on how to install the filter which must have been for blocks with no crankcase return port to which the optional filters were added.
Attach file:
(135.89 KB)
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