dumb question but whats the stock exhaust pipe size on a 2005 4.8...is it 2.5'' or 3''
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dumb question but whats the stock exhaust pipe size on a 2005 4.8...is it 2.5'' or 3''
2.75
It's 2.5" from the stock manifolds to the Y. From there, its 3" to the muffler. Then its 2.5" from the muffler to the tailpipe.