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Discussion Starter #1
This weekend when I was installing my heads/cam, I noticed that on the engine block (near where the lower intake manifold would be installed, the letters XXX were embossed into the engine. What does that mean?

Of course my friend and I made the stupid "This is a porno engine" type of comments.
 

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Mine has it too. Probably just denotes the type of block.
 

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sorry...i'm sure you've exhausted them but i can't help myself...

I bet that thing'll "go down" the track like nobody's business.
 
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