I couldn't find this information anywhere, does the stock VQ35 have a O ring built into the block and mating to the cylinder head? Any help is appreciated, as always.

 

Not quite sure what you are referring to, but there are a couple o-rings on the engine, yes.

 

He's asking of the OEM block features 0-ringed block. A popular mod to strengthen the seal inbetween the block and heads is to have thin groove machined around the piston bores to accept a metal o-ring.

I very much doubt that the Nissan does this as standard fare.

 

No.........

However this 8.5:1 VQ35 AEBS stroker block does:

 

Wasn't sure about it, didn't think it did though. Thanks for the info ice/jeff.