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Exhaust 5.7 HEMI Exhaust Discussion


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  #11  
Old 11-22-2013, 11:27 AM
Hornet Hornet is offline
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LOL,been there/done that too as a broke kid many moons ago.
The stock muffler is junk as far as flow is concerned and most of the above posters are telling you to throw it away anyways,so why not experiment with it first,bonus is it doesn't cost anything but a little time.
If it doesn't pan out,you still have the option of another muffler or a piece of pipe down the road.

Follow the above advice about starting with only a few holes and adding more if need be,but i'd go for it.

Audio cut his old muffler open now that i think about it,he's got pic's somewhere,but look for a series of spot weld dimples towards the back of the muffler on it's bottom,and maybe drill the holes just before the dimples.
If i remember from Audio's pic's,i think the back wall is nothing more then a resonant chamber (dead air space).
I'll see if i can get him to dig up his pic's,they might help with the hole placement somewhat.

Last edited by Hornet; 11-22-2013 at 12:09 PM. Reason: Changed advice after remembering things
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  #12  
Old 11-22-2013, 12:10 PM
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I weny to summit racing the other day they had a flowmastetr clone muffler there on sale for 19.50. And other types starting at 20 bucks .
If u take muffler off it will be stupid loud ie attracting unwanted attition from cops
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  #13  
Old 11-22-2013, 12:45 PM
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Quote:
Originally Posted by Thebestestdrummer View Post
were there no pipes from the muffler delete back? Or was there a pipe replacing the muffler?
Pipes all the way back. You don't want to leave the pipes under the truck. You will smell exhaust constantly not mention being dangerous. Carbon dioxide poisoning is not a good way to go.
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  #14  
Old 11-22-2013, 03:00 PM
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When I was researching mufflers I found on pic on here somehwere showing a stock muffler cut open, and was SHCOKED at how restrictive it seemed.
When I removed mine I cut it open to have a look, and it didn't seem AS bad; I've heard the Sport/Laramie may have a different muffler but can't confirm.
Anyway, here she is partially opened up (I ran out of cutting discs, and threw it away after this)
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File Type: jpg muffler.jpg (107.7 KB, 32 views)
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  #15  
Old 11-22-2013, 08:21 PM
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from what you all have said, I thinnkkkk I'll wait until I have enough cash to potentially buy a new muffler, but before I do I'll play with it and see if I can get to to sound cool and if I mess it all up Ill just buy a new one. Either way I plan on beefing up the exhaust eventually, so it just has to hold me over until then.
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  #16  
Old 11-23-2013, 11:38 AM
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FWIW the stock muffler actually flows pretty decent. It seems restrictive but that type of muffler is probably the best flowing for how much noise it muffles. I'd still go with a straight through type any day though.
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Old 11-23-2013, 12:09 PM
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Quote:
Originally Posted by spoiler View Post
I did it when I was your age... Since cash was tight I decided to drill 1/4' holes in the muffler one at a time until I got the sound just right. Drill a hole... drive around the block- open it up- back home to drill another hole. Repeat until you are happy.

I knew it was dumb and I knew I'd eventually ruin it with rust or whatever but I ran it for two years and was plenty happy with. I knew guys that were spending hundreds ... and mine sounded just as good and sometimes better that my buddies.

I live in California where the weather is friendly but even I knew to drill my holes on the low end to allow moisture to drain.

Have fun!
Oh yeah!... If you drill a few too many holes you can jam little "joints" of tightly wadded steel wool into the holes to make it a step quieter.
My actions and thoughts pretty much spot on.
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Old 11-23-2013, 12:22 PM
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I actually bought my 98 silverado 305 vortec str8 pipe under the cab..it was stupid loud inside and out.. you have to hold off a conversation untill i got up to speed lol. No lie.

I got a 8" cherry bomb glasspack on amazon for 25 bucks and added a tail pipe section from an older truck. Took it to the shop and the welded it all up and installed for 30 bucks. It sound and runs 100x better now and you can carry a conversation. Its still fairly loud but bareable. I like it.

Hope this helps!!

Id try this if your shops have a fair price. I coulda done a turndown for the same price...i have $55 in my whole setup. That includes a ~36" peice of pipe to make up the gap between glasspack and oem pipe, welds, glasspack and all.
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Last edited by shawnu; 11-23-2013 at 12:27 PM.
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Old 11-23-2013, 12:43 PM
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Quote:
Originally Posted by DarthRam View Post
Pipes all the way back. You don't want to leave the pipes under the truck. You will smell exhaust constantly not mention being dangerous. Carbon dioxide poisoning is not a good way to go.
I wouldnt go that far with it. I have a couple truck dumped right after the muffler and a couple dumped after the axle, only one i smelled fumes at stop lights with the windows down, and it had the cats cut off.


Now right under the cab, and of you do alot of stop and go heavy traffic, i wouldnt recommend it. Been there done that. Its loud and yes, fumes are a problem.
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  #20  
Old 11-23-2013, 12:44 PM
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I havr to agree with giving it a shot, you aren't out anything since you are gunna replace it eventually might as well have fun... I jammed a big concrete chisel thru the outlet of my muffler in my 95 5.2 and it sounded pretty good
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