Jump to content

Recommended Posts

Posted

To start with, I love the way the factory exhaust sounds.  Looking at that heavy ass muffler, I keep wanting to change it out.  I could careless about duel tips or anything like that.  I was just wanting to rid my truck of that giant 55 gallon drum of an exhaust...lol......So I like the factory sound and do not want anymore noise coming from it.  Having said that, a deeper sound would be amazing but I don't want any drone.  Perhaps a deeper note that won't drive you nuts when towing a trailer for 12 hours a day?  Not that I do that for a living, I'm just worried about changing it out with something that will drive me and my wife nuts when towing our camper.  Any advice is truly appreciated.

Posted

We have a lot in common. I think the GM stock sound on these gas trucks is perfect.
 

My old 2012 1500 had a Corsa exhaust and was extremely happy with it, no drone, a little bit louder than stock on the Highway, no drone. Maybe check them out.

 

 

  • Like 1
Posted
8 hours ago, NaturallyAspirated said:

We have a lot in common. I think the GM stock sound on these gas trucks is perfect.
 

My old 2012 1500 had a Corsa exhaust and was extremely happy with it, no drone, a little bit louder than stock on the Highway, no drone. Maybe check them out.

 

 

Thanks for the idea, I'll have to look and see what they offer.

Posted

I think there is a company called black horse . They make stainless steel high flow oem style mufflers for the 3/4 ton and one ton gassers. The muffler is large though  it is high flow large diameter internals no packing and quiet like stock. I ran across them one day on eBay motors when I was searching for a center console. 

  • Like 1
  • 4 weeks later...
Posted

I'm looking at these on Amazon. 

Walker 21470 - 3.5 inch inlet and outlet 

Tolalflow - 22421 and AP Exhaust  - XS2772  These are 4 inch inlet/outlet. They are straight though mufflers. 

Posted
56 minutes ago, Randal Scott said:

I'm looking at these on Amazon. 

Walker 21470 - 3.5 inch inlet and outlet 

Tolalflow - 22421 and AP Exhaust  - XS2772  These are 4 inch inlet/outlet. They are straight though mufflers. 

The walker 21470 is very interesting.  It appears most people who use them have diesels but there was one 6.0l chevy gas review.  That might be the one to try.

  • Like 1
Posted

The Walker one is what I'm thinking of using. The OEM is only 3". So they reduced from 3.5" down To 3" inlet and outlet, then back to 3.5" tailpipe. 

  • Like 1
Posted
On 2/18/2023 at 4:11 PM, Randal Scott said:

The Walker one is what I'm thinking of using. The OEM is only 3". So they reduced from 3.5" down To 3" inlet and outlet, then back to 3.5" tailpipe. 

Interesting.  I thought the OEM was 3.5" in and out.  Guess I was wrong.  Either way how about taking one for the team and trying one out.  I really don't want to be the one trying this because I love the way the factory system sounds.  For those that want a different sound I think trying the Walker one would be an excellent idea.  I really would just like to rid the truck of a lot of weight but yet stay close to the same sound.  My fear is it driving us out with noise while towing our camper.  Around town I would love a deep sounding system, but when towing for many hours I don't want it blatting away so we can't hear each other talk.  I'm sure you get what I'm talking about.

Posted

I like the sound of the OEM! I want to reduce back pressure, reduce heat ln the exhaust manifold and open flow. I don't want to make it louder. I'm thinking that this Walker muffler being straight through flow and with the length, it will flow and hopefully have good sound without being louder. 

  • Like 1
  • 2 weeks later...
Posted

Ok, I finally got to measure the OEM muffler. It has 3" inlet and a 3.5" outlet. The pipe drops from 3.5 down to 3 about an inch in front of the muffler. That Walker muffler is too long. It's 37 - 38 inches long. Would have to move the hanger in front of the muffler. Have around 32 inches to work with. That would be total length. So I'm looking. Found some prices range from $89 up to $235.00. A lot are stainless steel. Also been looking at cat-back kits. Waiting for the weather to stay nice and my leg to heal.  Don't want a loud sound. Just better flow and a nice sound. 

Posted
10 hours ago, Randal Scott said:

Ok, I finally got to measure the OEM muffler. It has 3" inlet and a 3.5" outlet. The pipe drops from 3.5 down to 3 about an inch in front of the muffler. That Walker muffler is too long. It's 37 - 38 inches long. Would have to move the hanger in front of the muffler. Have around 32 inches to work with. That would be total length. So I'm looking. Found some prices range from $89 up to $235.00. A lot are stainless steel. Also been looking at cat-back kits. Waiting for the weather to stay nice and my leg to heal.  Don't want a loud sound. Just better flow and a nice sound. 

I wonder why they necked it down to 3" right before the muffler?  Did the supplier not have the ability to make the muffler 3.5 in and out?  That doesn't make sense to me.  Thanks for the info on the Walker.  Please keep everyone updated on what you decide to do.

Posted

Ok, here is some muffler options. They are 3.5" inlet/outlet. Most will need a piece of pipe to fill in.  These are all on Amazon. 

Flowmaster 953558

Dynomax  Ultra Flow  17224

Magnaflow 12909

Tolalflow 22420

Vibrant 1124 Streetpower 

Dynomax Ultra Flow  17517

Flowmaster  74151

Piece of 3.5" id/od pipe 36" long   43366 

  • Like 2
Posted
16 hours ago, Randal Scott said:

Ok, here is some muffler options. They are 3.5" inlet/outlet. Most will need a piece of pipe to fill in.  These are all on Amazon. 

Flowmaster 953558

Dynomax  Ultra Flow  17224

Magnaflow 12909

Tolalflow 22420

Vibrant 1124 Streetpower 

Dynomax Ultra Flow  17517

Flowmaster  74151

Piece of 3.5" id/od pipe 36" long   43366 

Which one do you think you are going to try?

Posted (edited)

At this point, I'm not sure. I like Flowmaster 953558 and the Magnaflow 12909. But I'm thinking cheap. Meaning Dynomax 17224, but I wonder about sound. Been looking at kits too and thinking what the hell. By the way, my truck is a LT crew cab and the standard bed (6.9'). 

AFE Power 49-44122-P (P for polished and B for black tips).

This is 409 stainless steel. For $550 to $650.

 

Flowmaster 718111 (aluminized) $750 ? This is the quieter of the 2.

and 

817933  (409 stainless steel)  $900 ?

I would like just to do a kit and be done. The top kit is single and the other 2 are duel exhaust. Waiting to see how much money I be allowed to spend. I'm betting will just a muffler. Kinda waiting to get back on my feet. 

Edited by Randal Scott
had the wrong part number the first time
  • Like 1
Posted

Ok, I'm going with AFE Power 49-44122-P cat-back kit. It is 409 stainless steel. And is on sale at Summit Racing for $465.70 plus tax with free shipping. It uses the OEM hanger and bolts to the flange behind the cat. Here is kind of what it sounds like. 

 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Latest Articles

  • Posts

    • I have changed oil and filter for years by starting a cold engine to warm oil up, let it run 5-10 minutes depending on temperature. Drain until it starts dripping, refill with quantity from owners manual or get it close.   
    • I changed the factory fill oil in the rear diff of my truck for the first time today and the miles is close to 9000 on the truck. There was a lot of fines on the magnet, a very thick layer but working it through my fingers it all felt like mush and as most know it appears like graphite, so no surprise chunks anyway. Certainly was time to do it from my thinking and could have been done sooner but the oil didn't look awful but sure wasn't new looking and never expected it to either. I did use some solvent to help me clean out the bottom area of the axle housing, just get any other stuff settled at the bottom washed and wiped out of the housing for the bit of effort it takes. I used Amsoil Severe Gear 75W90 in the easy packs to try out what they are like and I used up 4 packs and didn't spill much at all in the process but did take all four of the packs and go to the work bench and emptied them into a measuring container and there certainly was some in them that added up to something, then poured that into one of the easy packs and squirted in what I could get out of it. I would say the level is within 1/8th of an inch of being level with the threads at the fill plug so just the perfect amount. Once again, more than what GM says the fill volume is but computes with what others are adding to their rear diffs as well. 
    • So speaking of oil consumption with my L8T as I just changed the oil yesterday and made the switch over to Amsoil SS 0W-40 from the Mobil 1  5W-30 Truck and SUV I just dropped out. 2900 miles on that oil as well as  68 hours on that oil ( so used to equipment with an hour meter and that becomes valuable information to compare with others as well ). Once again the oil use was so very little, I am going to say it dropped under 1/16 of an inch on the dipstick. No towing was done and this interval was from early spring until now.    One interesting item to note is that going by the 5 quart jugs I was using before from Mobil, it was showing that I was putting in 8 US quarts to bring it to full if not slightly over the full mark according to their jug markings. Granted I did allow more drain time this time and in part because the engine oil was only lukewarm as I started it and let it idle and not for long enough to get the oil itself hot ( the engine was up to operating temp ). The oil in that state just seemed to take forever for it to drip out but not only at the drain plug but at the oil filter housing as well, perhaps I had never quite gotten all the oil out before and I could have still waited longer but as it was I waited well over 3 hours. I think next time if I have the time I will do an experiment by dropping the oil and lets say leave the pan under it for 15 minutes, then switch to another pail and let it drip out overnight and measure how much more oil comes out. So this time and yes I ended up getting it just over the full mark as I was experimenting with trying to get the level to the add mark after I had run it and then waited some and then added a bit and waited for a certain amount of time for it to settle to the add mark. I very well may not have waited long enough for that experiment but I got to the add mark, then dumped in a full quart and waited some and checked and then waited some more and it crept up more ... and then finally oops, it was slightly over full some hours later when it really had settled all it would. I find this engine sure takes time for the last bit of oil that gets poured in to finally make its way into the crank case. I can only guess at how much too much I added as per maybe a 1/10th of a quart. I had poured in 8.5 quarts going by the quart containers as per 8 quarts and 16 us ounces. I was shocked at how much this was off compared to the prior oil changes and if those larger jugs and they are not marked accurately enough or they contain slightly more than what they say, or the drain time factor made that much of a difference. But I know on this forum there have been others who have said they have put well over 8 quarts in their L8T and now I have also going by the Amsoil true quart containers. Its a confusing convoluted mess up here in Canada with some oil manufactures packaging is in true US quarts, some is also in true US quarts containers on an even number of quarts but also marked in liters which becomes the odd ball volume of a fractional amount of liters. Then there is the Liters only containers, no US markings as its a true metric container and only measured in Liters to an even number of Liters. But remember we used to have Imperial Gallons and Imperial quarts as well !. 
    • Holy smokes. Clearly not a deal on that truck. I just mean in general, matte or painted trim is becoming more normative than chrome, but I know the Black Optics packages on various vehicles are being sold as uplevel trims. They look really good, but sheesh. It's just paint and plastic.
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...