LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Stock Z28 intermediate pipe diameter?

Old 07-30-2007, 11:50 AM
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Default Stock Z28 intermediate pipe diameter?

Could someone please tell me the real size of the stock intermidiate pipe? I need to get a reducer made or find one. I am sticking with the stock exhaust for now, and I have a LTs with y-pipe and a cutout. The cutout is a 3.00" inside diameter and I need it to connect to the stock intermidiate pipe. If someone could tell me what size it is that would be great, and also maybe a good place to get one already made to the size I need. Thanks!
Old 07-30-2007, 12:35 PM
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Anyone?!
Old 07-30-2007, 01:12 PM
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I think it's 2.5inchs...
Old 07-30-2007, 02:02 PM
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the factory I pipe is 2-7/8
Old 07-30-2007, 04:03 PM
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i thought it was 2.75 inches
Old 07-31-2007, 10:54 AM
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I am almost certan its bigger than 2.5"... maybe its the 2 7/8. The stock IM pipe can slide into the 3in pipe with a little room to spare.


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