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exhaust suggestions

goatboy0067

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goatboy0067 Enthusiast

goatboy0067

Posted
Posted

the exhaust is in need of replacing on my truck i know the exhaust that is on there is not right i have true dual (no y pipe) it is 3" all the way back to the muffler. the muffler has a 2 1/2" inlet and outlet (2 seperate mufflers) then i reduces down to 1 1/2 in tail pipes with 4 in tips. any suggestions on size and brand. would like muffler and tails would like to keep the dual. and any reason why they would have used such restrictive pipe none of the hangers line up with factory.

Chris Senior Enthusiast

Chris

Posted
Posted

I love the MBRP on my truck. Nice at cruising, its quiet but you still hear it a little. Absolutely no drone. At WOT the sound will turn you on

 

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goatboy0067 Enthusiast

goatboy0067

Posted
  • Author
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i cant find one on mbrp's website that will fit my 01. what is the tail pipe size on a stock 01 with an 8.1? what are some of you running for size. i know mine is not right at 1.5 in.

Chris Senior Enthusiast

Chris

Posted
Posted

I am not sure. I have the 5.3 system on my 6.0

 

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Big Whiskey Senior Enthusiast

Big Whiskey

Posted
Posted

I wonder why in the heck they put 1.5" pipe on an 8.1 engine?!? :banghead:

 

For the HP range of a stock 8.1, either a single 3.5" system or a dual 2.5" system would be just fine.

ATMINF Enthusiast

ATMINF

Posted
Posted

The stock 2500HD systems for the 8.1 or 6.0 gasser are dual 3" systems that feed into a single muffler that then has a single 3.5 outlet.

goatboy0067 Enthusiast

goatboy0067

Posted
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i know i dont know where i would find an 1.5" exhaust unless it was custom. i was looking at a 4" setup i wonder if i could use a diesel tailpipe if i could find a muffler with dual 3" inlet and single 4" outlet the diesel tail pipe is much easier to find. thanks for the input.

goatboy0067 Enthusiast

goatboy0067

Posted
  • Author
Posted

does anyone have the 4" single exhaust from flowmaster? i also saw heartthrob had a 4 " system. any thoughts?

dewfpo Senior Enthusiast

dewfpo

Posted
Posted

does anyone have the 4" single exhaust from flowmaster? i also saw heartthrob had a 4 " system. any thoughts?

 

 

That's HUGE for a street gasser unless your at the drag strip cranking serious RPM's. For everyday driving I would think that it would kill your low end. But I'm no expert with a dyno.

 

DEWFPO

goatboy0067 Enthusiast

goatboy0067

Posted
  • Author
Posted

really there is dual 3" into the muffler and a single 4 out. i think it was 3.5" from the factory. again i do pull a 16' job trailer and a skid loader so its not just a driver. also i have a autocal so ill have it tuned after install.

hzhardy Enthusiast

hzhardy

Posted
Posted

i have a gibson metal mulisha exhaust that is 4" and i love it. I did have to change the tip as it just looked to obnoxious with the skull

  • 2 weeks later...
Gleason_88 New Member

Gleason_88

Posted
Posted

i gotta 01 gmc with 6.0 gasser auto an i put 3inch flowmaster race mufflers an 3 inch pipe from the manifolds back all the way to the rear bumper dual exit out the side an it sounds amazing but it is pretty loud

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