AFM DELETE THE RIGHT WAY
When performing a performance camshaft upgrade on a LS engine that is originally equipped with the Active Fuel Management system (AKA: AFM or DOD) it is advised to remove the AFM solenoid assembly from the engine and convert the engine to a non- AFM valve train. Inside the LS engine valley, there are 8 oil holes that feed a solenoid assembly which is bolted to the bottom of original AFM cover plate. If you replace the original AFM plate assembly with this new GM cover plate, it has 8 small protrusions that seal off those 8 oil feed holes. If you were to remove the AFM solenoid assembly from the original plate and not plug the oil feed holes, the oil would continue to be pumped to where the AFM solenoids were located. This will cause a low oil pressure situa­tion. This excess oil will also collect in the engine valley before eventually running off into the crankcase.

Kelly Gill
Engine & Performance Warehouse
April, 2018