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Old 02-05-2014, 12:58 PM   #3
fabric8
 
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Drives: 2013 IOM 2SS RS 1LE NPP
Join Date: Jan 2014
Location: Miami Shores
Posts: 23
Quote:
Originally Posted by Apex Chase View Post
The VMAX ported throttle bodies are stock GM throttle bodies that have had a porting service performed. The throttle body itself is a GM part. That spot is where the molten aluminum is poured into the cast when it is manufactured. Some are a little cleaner than others but they all have some sort of marking in that spot.

How about the cracks in the casting ?
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