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  1. #1

    Default Single in and Single out Flowmaster exhaust with stock pipe.

    I have a 4.8L Silverado. I want to get a single in and single out flowmaster 40 series muffler. I was going to keep the pipes stock. How good would it sound? I don't want anything really loud, I just want to get the rumble. Would this just be a waste of money or not? As for the tip for my exhaust I found an angle cut stainless steel tip 8.5" x 3". Here is the link to it-EXHAUST TIPS Stainless Steel T304 Angle Cut 8.5" X 3" | eBay would this be fine or do I need to buy a $65 tip?

  2. #2


    I think you'll find it'll give a nice little rumble, not obnoxious at idle and open up a little in the higher RPM bands

  3. #3


    That's pretty much I am looking for. What about the exhaust tip that I posted a link of?

  4. #4


    Thats a 3" inlet I dont remember what your exact pipe size is but I know it's smaller than 3"s more like 1 1/2 or so, youd need a reducer to use that tip.
    So yes it will work if you have room to cut your pipe back far enough to fit a reducer and the tip on so it doesnt stick out to far.

  5. #5


    The pipe size for my silverado is 2 3/4 and once I weld it to the stock pipe I think it will be fine I'm not quite sure. I'm gonna measure my current stock exhaust to make sure the tip will not stick out to far.

  6. #6
    Jr. Apprentice
    Join Date
    Sep 2011
    Sussex Wisconsin


    Hi there guys im new to this forum and i just wanted to say that i was looking at getting a flowmaster american thunder system with the dual out the rear and the super 50 series muffler. And as a reply to the first question wouldnt you have to cut your pipes because its all welded? How were you planning on getting the stock pipes back on?
    1994 Chevrolet Silverado K1500 Z71
    3" Body Lift
    American Racing rims
    33" Yokohama Mud Terrains
    Dual Exhaust straight pipes

  7. #7


    Some mufflers are held on by clamps so all you would need to do is loosen the bolts around the muffler. If the muffler is welded you could use a sledgehammer to knock it loose or use a hacksaw to cut it at the weld and replace the muffler and weld the pipes to the new muffler.

  8. #8


    Good stuff. I was thinking about this too...

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