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    When installing a VVL head on a non-VVL block and still utilizing the factory solenoid block, then you will need to feed the head externally with oil.  This is typically done when using a P12 (8H6) head on a RWD application or on FWD/AWD configurations.

    It's best to pull the factory ball bearing from the rear of the head and tap it 1/8"NPT to feed oil.  You will also need to tap the original feed hole on the deck of the head 1/8"NPT.  Make sure the plug will be slightly below the deck.  Oil feed needs to come off the of the oil filter housing or relocation block.  We supply a BSPT to NPT adapter if needed.  The picture does not show the adapter because we retapped the oil filter housing 1/8"NPT.