Exhaust size

crewleader22 · October 28, 2004

What size is the exhaust pipe from the cats backto the muffler and from the muffler out? It looks like 3" to the muffler and 3.5" exit. Is that correct?

Mort · October 28, 2004

I am not sure what truck you have so it could be different than mine. My exhaust is as follows:

Front pipes from manifold to cats OD 2.915"

Muffler inlet OD 2.75"

Tail pipe OD 2.75" / ID 2.61"

My system has the dual in / single out muffler.

crewleader22 · October 28, 2004

Thanks! It sounds like the same setup. I have a '01 2500HD 4x4 6.0 Crewcab and it has dual in and single out.

-mike

Mort · October 28, 2004

Welcome. Yes it sounds like the same one but I am not enough of an expert to know for sure. I am sure a measuring tape or calipers on yours will let you know for sure.