Catch Can Routing....

[dhutton]

To the best of my understanding (which is very very little), there is no air port on my intake system. Ive looked all over and found nothing between my MAF and throttle body. Perhaps this is because this LS3 is a crate engine and not the ones in a modern car?

For the top fitting I could find absolutely no info from Mighty Mouse and almost nothing online about where it is supposed to go to. The only thing I could find was a video of a guy installing this same catch can on a C6 Z06 and he said the top fitting was to be attached to tubing leading to anywhere under the car and that then said something about how if the "oil boils" or something like that then the catch can would release the oil from the top to get it out of the engine.
... personally, I have no freaking clue.
Any thoughts?

You have to drill a hole in your intake tube and add the fitting to connect the hose. The GMPP crate instructions are very clear on this point.

Don