Help-thread pitch and size of crank bolt

We pulled the crank bolt from this gto crankshaft and some metal came out with it, and the tip of the bolt is messed up, thanks a lot whoever did that (we didn't do the first cam)
So, i want to run a tap in the crank to clean the threads up a little before I try to put this bolt back in.

What is the size of tap I need? Pitch, size, etc?

thanks guys!
allen

I think it is M16x2.0.

<div class='quotetop'>QUOTE(GMCwantsLS1 &#064; Oct 12 2006, 03&#58;33 PM) [snapback]69079[/snapback]</div>

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I think it is M16x2.0.
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that&#39;s it, i found it, thanks Jeff,
allen