
Just to aggravate everyone a little further-
The above ILL was used in the 1957/63 LT MPC. The 2V system was a carry-over from the PASS CAR design - first used. FORD kept using this system on both car and truck until the FYB was retired. The 4V version was LT only as there was no 4V FYB used in PASS CAR (61/62).
If you notice in the 4V install, there is a tube (6758). This was actually a cooling tube wheres any mist that got by the valley pan baffle cooled somewhat and dropped back down the tube before being ingested into the engine (hopefully).
PCV is an emissions device but it also a way the crankcase is ventilated of blow-by. All depends on engine condition, fuel curve and strength of vacuum signal/properly calibrated valve. The only way to determine if the system is functioning properly is by the vacuum pull test (as mentioned) and/or oil analysis,
Seems "to work fine" is not an option on a hi-dollar engine (IMO anyway).
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