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Stock y pipe diameter

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Old 03-10-2011, 07:50 PM
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Car: '89 Camaro Rs/ '87 Z28
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Stock y pipe diameter

Anyone know the Diameter of a stock ypipe on an 87 z28 305. The end that goes to the cat.
Old 03-14-2011, 08:54 AM
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Car: 1985 Camaro Z28
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Re: Stock y pipe diameter

IIRC it is 2-1/4. What are your planes?
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