AbsolutHank

iTrader: (4)

I have a LM on my 98 TA....what exactly are the specs for a weld in Sweet Thunder Muffler to go in place of the resonator? I am assuming 18" long, 3" in and out...just a little guidance please

Z28Venom

iTrader: (13)

Actually,
The 18" muffler is 24" total. The 3" has a 3" inlet/outlet, but it has a 2.5" core.

In all honesty, the Sweet Thunder isn't the best option for replacing the resonator. I would look into a Borla XR-1 ( 40085 ).

AbsolutHank

iTrader: (4)

With the location of the resonator, and my car being lowered, I read that the Borla has even worse ground clearance issues...is that true??

1CAMWNDR

iTrader: (21)

The Borla has a larger body so yes, ground clearance will be an issue. The Sweet Thunder mufflers have a 3" body. They will not be any larger than your IM pipe.

AbsolutHank

iTrader: (4)

Alright, back to the original question....why isnt the Sweet Thunder a good replacement for the resonator?

Uno99

iTrader: (2)

The resonator is 3" all the way through. Sweet thunder Narrow down to 2.5" inside. They sound great.

AbsolutHank

iTrader: (4)

Well, other than a few bolt on's, the car is stock and will stay that way....what I care most about is the sound, not the 3 hp going back down to 2.5" might give up. I bought the car with the LM already installed, and its just obnoxious as hell...not to mention it sounds like a giant fart cannon borrowed from a Honda....i want something with a mean sound, not necessarily loud with alot of rasp and popping back like the LM...thanks again

Flaminchiten67

What I was going to look into for my LM was a 1 chamber 3.5 inch in/out flowmaster. The pipe on the LM is 3 inch but the resonator goes to 3.5 inch I believe. I have never heard this setup but think it would refine the sound just enough without making it too quiet.

Here are the muffler specs:

Part #: 389-9435109
In/Out: 3-1/2''
Body: 6-1/4''
Chambers: 1

kpowr82

iTrader: (9)

Did you see the width on that bad boy? 10.25" not gonna fit my friend. Not without some modifications anyhow.

FWIW, the LM resonator swells to a 4" diameter I think. I'll have to measure it. I've toyed with the idea of adding a sweet thunder I've got laying around into my current setup, but don't want to lose the horsies up top. Planning on a cam soon too, so I don't want to choke it up.

LS1 Hawkeye

I put a 3" sweet thunder in the I-pipe of my Z and the sound is great, over the stock muffler that is. I wasn't really all that worried about any loss in power either. It was pretty much to wake to exhaust up for now. When I get my headers next year I'll be going to true duel over the axle anyhow.

Uno99

iTrader: (2)

I say do it My buddy has done it on his Ws6 and it sound great. Just throw a cut-out on front of the Sweet thunder. Best of both worlds. Great sound and good flow.

silver02Z

iTrader: (19)

http://www.sweet-thunder.com/chamber....html#aluminum
If you don't find the info you need then you can e-mail them and they are quick to respond..

Kevin

Flaminchiten67

I think it will fit. I have seen some pics of it and it doesnt look too bad.

https://ls1tech.com/forums/showthrea...ed+before+axle

kpowr82

iTrader: (9)

That link doesn't work. I wanna check those pics out though. I'd like to refine the sound of my Hooker and ORY a little bit. Think you could check out that link and fix it real quick?

Flaminchiten67

O.K. try this one.

https://ls1tech.com/forums/generation-iii-external-engine/274298-ypipe-single-muffler-dumped-before-axle.html

It's a custom setup but I think it could still be doable on a LM by an exhaust shop. I think the one used here is a 2 chamber.

prince xizor

iTrader: (2)

what would happen if you would cover the gap in the I pipe and put the resonators out the back before the tips? Just use 2 mufflers instead of one?

Flaminchiten67

There is a thread that I remember where the guy put 2 one chambers in his tail pipes of his LM. I am too lazy to search for it right now, but he said it sounded really good.