Quote:
Originally Posted by chucksmith
how is the turbo block different from a NA block?
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The block should be stamped M64/60 for a 993 turbo and should have the nose oil passage below the intermediate shaft open for the turbo's scavenge oil pump in the console. Not sure about the bigger piston squirter but definitely different head studs.
If the block is only stamped M64/ with no digits after the bar that means "normal aspirated" or "turbo", it's a service replacement block and a great price. Also can be use in a 964/965, same part #.