Please confirm my question/exploration:
My setup>
305 v8 small block, headers, edel air intake, edel 1406 600ccm, HEI from 301T 79 with pressure switch, pressure sensitive/modified mechanical fuel pump, fuel pressure regulator, performance oil pump, KN air filter, cam stage 2, modified distributor springs and weights, rods and jets prim/sec modified up to .120 secondary, air to water cooler with Bilge pump 30l/min, Eaton Supercharger M112 with pulley making upto 10PSI, blow thru setup - carb in a box, Eaton placed on left side of the engine, blowby setup 8PSI, manual transmission (killed right now - tremec T5), A/F meter with Bosch full scope sensor, pressure sensor intake + vacuum sensor - 2 gauges, AF gauge, oil catch can.
Have no idea about power and torque, T5 lost 4th and 3rd is dying - waiting for 3650 Tremec from Ford.
Question/confirmation>
Right valve cover - PCV, oil catch can, back to edel intake (from middle bottom input)
Left valve cover - went to Air intake in front of Supercharger BUT!!!
I switched it to atmosper and the vacuum gauge showed more stable values, the engine behaves more smooth..
Probably reason:
Right side - vacuum drown from engine / undepressure
Left side - connected to intake of supercharger (right after the filter) / underpressure
So, from both side the engine was forced to produce vacuum all the time, no breathing - no way from to go, all the time it was one way.
After disconnecting from supercharger intake, the engine can take fresh air from one side (no undepressure) and make vacuum from other side. No closed circle.
Is this way better? From my experience - yes.