Is this supposed to have a hole in it? (PIC)
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I was installing my wideband and heard this air sucking noise and noticed this hole... the car runs fine, is it normal? I remember my LT1 had a similar hole...
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That's a common problem on LS1's. Fix it immediately. The inside of your engine probably looks horrible from all the dirt thats been sucked in there. I just pulled a 65K mile LS1 apart with exactly the same hole. The owner is a personal friend of mine and is religious about oil changes. The cylinder heads and crankcase were NASTY...
Shane
Shane