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aubrycox
06-08-2012, 05:41 PM
okay i know this is a moronic question but the piping right after the factory cat, is it 3 inch? it has to be bigger than a 2.5 i know that. and its a 90 chevy 1500 350 2wd.
Low97tahoE
06-10-2012, 08:06 AM
It's 2-3/4

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aubrycox
06-10-2012, 10:21 AM
are you sure? its a pretty big pipe. the factory cat is the size of a damn cardboard box
Low97tahoE
06-10-2012, 11:28 AM
Yea I'm quite positive, my brother had a '92 and 3" pipe slipped right over the stock pipe, it should be 2.75

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