Motorhome Muffler

Chipper Chapman · 03-16-2018, 08:23 PM

I just bought an ‘03 Chevy C class with an 8.1L. I was underneath checking it out and noticed one of gms greater ideas, the factory 2-3/4” dual exhaust runs to just ahead of the middle then into a factory collector that necks it down to 2-1-2” single with single in/outlet muffler. I plan to put a tune into it for a little better mileage but knowing how restricted gm’s mufflers are I want to put something better on that’s not very loud. I’m thinking single muffler with dual inlet/outlet. What is a decent muffler that isn’t going to make me hate driving my new motorhome?

03-16-2018, 08:23 PM	#1
Chipper Chapman Member Join Date: Jan 2004 Location: Belmont N.S. Canada Posts: 451 Likes: 210 Liked 141 Times in 63 Posts	Motorhome Muffler I just bought an ‘03 Chevy C class with an 8.1L. I was underneath checking it out and noticed one of gms greater ideas, the factory 2-3/4” dual exhaust runs to just ahead of the middle then into a factory collector that necks it down to 2-1-2” single with single in/outlet muffler. I plan to put a tune into it for a little better mileage but knowing how restricted gm’s mufflers are I want to put something better on that’s not very loud. I’m thinking single muffler with dual inlet/outlet. What is a decent muffler that isn’t going to make me hate driving my new motorhome? __________________ Chris Chapman 1969 Chevelle NHRA F-G/SA 1090