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08-05-2005, 06:46 PM #1stringtheoryGuest
What is the ID of the stock intermediate pipe on 98-02 Z28's?
I assume that the LS1's came from the factory with 2 3/4' intermediate pipes? Is that correct?
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08-07-2005, 05:17 PM #2
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Pewter- all bore 370 Trans Am
yup
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08-08-2005, 09:35 AM #3
The passenger side down pipe off the header is double walled resulting in a very small inside diameter. Probably more of a restriction then the 2 3/4" intermediate pipe.
2017 A8 Z06 - 10.48 @ 132.3 mph
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