Muffler Size For 6.2l

[VA_GMC]

I've tried to search for this but did not find the answer. Will a 4" inlet outlet muffler work on a 2010 6.2L? The stock exhaust is 3.5" I believe? Or do I need to go with a 3" or 3.5" thank you for your time and help I need to fine this out pretty quick since I'm ordering one hopefully this evening.

 

God Bless

[Seelow]

I wouldn't go with a 4" since it is a 3.5" stock exhaust and most 4" would probably be more money and the size isn't needed. There is not a lot of 3.5" muffler choices out there but a lot more 3" you can always have the pipe expanded or get a 3"-3.5" adapter. The affter market systems use 3" pipe. The stock muffler is a offset in offset out and about 27" long If your just doing the muffler there will be custom work involved so be ready for it or have a shop lined up. I've searched the topic a lot and ended up buying a aero turbine 3535xl witch is 3.5" in and out. I have not had a chance since its been freezing out get it installed. A lot of people have just been cutting off there resonator in the back with great results on sound improvement. Over all the stock system flows very well.

[VA_GMC]

I wouldn't go with a 4" since it is a 3.5" stock exhaust and most 4" would probably be more money and the size isn't needed. There is not a lot of 3.5" muffler choices out there but a lot more 3" you can always have the pipe expanded or get a 3"-3.5" adapter. The affter market systems use 3" pipe. The stock muffler is a offset in offset out and about 27" long If your just doing the muffler there will be custom work involved so be ready for it or have a shop lined up. I've searched the topic a lot and ended up buying a aero turbine 3535xl witch is 3.5" in and out. I have not had a chance since its been freezing out get it installed. A lot of people have just been cutting off there resonator in the back with great results on sound improvement. Over all the stock system flows very well.

 

Thanks for the reply! i've never seen that muffler before but they look good I might have to consider it. Are they very loud?

 

God Bless

[flyin6]

I wouldn't go with a 4" since it is a 3.5" stock exhaust and most 4" would probably be more money and the size isn't needed. There is not a lot of 3.5" muffler choices out there but a lot more 3" you can always have the pipe expanded or get a 3"-3.5" adapter. The affter market systems use 3" pipe. The stock muffler is a offset in offset out and about 27" long If your just doing the muffler there will be custom work involved so be ready for it or have a shop lined up. I've searched the topic a lot and ended up buying a aero turbine 3535xl witch is 3.5" in and out. I have not had a chance since its been freezing out get it installed. A lot of people have just been cutting off there resonator in the back with great results on sound improvement. Over all the stock system flows very well.

 

 

Not sure I concurr with this recommendation to expand a 3" muffler.

 

The factory exhaust is 3.25 to 3.5" depending on where you look. If you add a muffler with 3" pipe, that will be the maximum size of the pipe inside the muffler, so you will essentially be adding a restriction by "expanding" a 3" pipe simply to fit

 

The 6.2 L92 has rectangle port heads capable of flowing 300cfm per intake port and feeding through a 2.16" valve. That is simply monstrous! A few years back we could barely port heads to flow as much as the stock L92/LS3/LS7 do right from bowtie hqts.

Why add a performance muffler that actually restricts the system?

Flowmaster and magnaflow both sell mufflers with a 3.5" inlet and outlet. Stop by a truck supply shop and you can pick up some 3.5" tubing to adapt the muffler.

BTW, I am using the stock muffler on my semi built 6.2 Escalade with great results.