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Got the intake manifold off of my 93 LT1 and its at the machine shop getting ported. It passed a test they ran to determine whether they could port the intake safely (I'm assuming). Once they started to port it, it cracked by the #6 cylinder. They think there may have been something in the casting that caused it to crack once they ported it.
Good news is they will buy me a new intake. The BAD new is they won't get one in for a couple of weeks. I'll be corvetteless for over a month now. I'm bummin. I just got a keep visions of long tubes and ported intakes dancing in my head until it's done. (I'm getting the intake ported, 30# injectors, and long tube headers done to complement the cam, ported heads, hi flow cats and Borla's already done to it). Wish me patience!!