Re: 1940 Brake Pedal Spring

Posted by HH56 On 2014/6/27 21:26:58

Not sure exactly when they changed the inlet to the side for the 356 engine. I am guessing it might have been 42. Parts manual lists the same filter used on Clipper 356 engines 20 and 21 series and my 21st (if original) is side inlet. The 40-41 engines have a different number so that is probably the bottom inlet. That 40-43 period is when they were doing all the changes to filter plumbing because of the noisy lifters.

They used a different part number and same filter for all engines 22nd thru 54th and those are all side inlet. What confuses the issue more is some of the aftermarket filters had a bottom inlet even when Packard was using side inlets and there are a few of those fitted on engines -- maybe by dealers, maybe by the corner gas station -- so it is kind of a mismash.

As far as the filter operation, it will work either way as long as the flow is there. IMO, the main advantage to the side inlet is there is considerably more surface area on the outside diameter of the filter and time until it fills up and starts restricting flow will probably be longer than if all the crud was directed to the small inner core.