1997 k1500 burb stock exhaust or flowmaster...?

[hi54lofi]

Hello all, I hope this is the correct thread.

I was under my truck the other day trying to identify possible problems and I noticed the muffler was labeled "FlowMaster" on the top. I thought I had stock exaust. Is this definitely aftermarket? Did GM use FlowMaster exhausts out of the factory in 1997? Thanks for anyones help. Attatching photos.

 

[movietvet]

That is not a stock muffler weld on that pipe. That looks aftermarket to me. I used to use FlowMaster mufflers but as I get older, I like stealth. I like the quiet.

 

[95burban]

Definitely aftermarket. Flowmaster use to call those 70series big block or rv mufflers.

 

[Schurkey]

Perhaps a moderator will move this thread to the "Exhaust" sub-forum.

Flowmaster does a lot of advertising in the hot-roddy magazines, but in truth...they don't flow all that well.