???bout a thrush fully welded muffler

aflo39 · Aug 15, 2009

would a thrush fully welded sound good on a v6 4.0l wit no cats or would a thrush tubo sound better, cause im working on a budget.

Hahnsb2 · Aug 16, 2009

It will sound good but obnoxious without the cats..
Much like this.
http://www.youtube.com/watch?v=KYjD6ypQ8uM

aflo39 · Aug 16, 2009

is tht the sound witout cats cause i like tht sound

Hahnsb2 · Aug 16, 2009

Yes, but it is VERY loud and VERY illegal.

aflo39 · Aug 16, 2009

the thrush fully welded and the orginal 40 flowmasters are bout the same right just cheaper

Hahnsb2 · Aug 16, 2009

rickcdewitt · Aug 16, 2009

my truck had the cats rattle apart(i'm running a 40 series flow) and it was so loud friends could hear me coming from over a mile away.and it would resonate so bad it would rattle your ear drums at low rpms under load

feellnfroggy · Aug 16, 2009

Hahnsb2 said:
It will sound good but obnoxious without the cats..
Much like this.
http://www.youtube.com/watch?v=KYjD6ypQ8uM

That is the sound of a 2.9 without cats, not a 4.0l. big difference. I hada 3.8 with cats and flow 40's and it sounded good, But when I removed the cats added long tubes and the 40's it sounded great. I know he doesnt have long tube headers, but if I remember correctly the B2 came with a shorty style header/manifold from the factory didnt it? I get a little of the obnoxious rattle but not until 3200 rpm's. (using mustang digital tach).

It's all personal preference. By the way, Mightbe stricter laws where you live, but here in K-town, TN and also in Florida catless was not illegal. A shop by law cant put catless on unless its for offroad use, but its not illegal to have catless onroad, unless you have emissios. But then again any shop will do anything for cash.

Hahnsb2 · Aug 16, 2009

feellnfroggy said:
That is the sound of a 2.9 without cats, not a 4.0l. big difference.

I've had both, not a big difference.

It's against federal law anywhere in the US, period.

aflo39 · Aug 16, 2009

the way to keep it from resonating on the inside of the truck would be to leave the cats on right?

aflo39 · Aug 16, 2009

alright wht do u mean "run all the way back"

aflo39 · Aug 18, 2009

well boys i welded my thrush welded muffler on this afternoon and i cant complain but maybe alittle to much noise in the cab. so next time i get the chance im goin to bend alittle more pipe so i can come out right in front of the rear wheel. but i suggest this muffler to anyone cause its the tradition truck sound in my opinion.

scott5640 · Aug 19, 2009

my 3.0 v6 with a thrush welded muffler

PlumCrazy · Aug 21, 2009

I have a 95 4.0, I kept my cats, and ran 2.5 inch pipe with a thrush welded. It exits before the rear tire. I cut the original flange off the cat (the one that reduced to 2.25) and welded on a 2.5 inch flange. I have a ext. cab and the muffler is under the rear of the cab. It sounds pretty throaty but not to loud in the cab.

-plumcrazy

aflo39 · Aug 22, 2009

did u put a turn down on ur muffler r is it just running straight out

???bout a thrush fully welded muffler

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