Crossflow Muffler Installation question(s) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-10-2007, 03:06 AM   #1
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Default Crossflow Muffler Installation question(*)

I want to do a crossflow muffler installation. I'd like to do the tips like you see on the late ninetys grand prixs (which would result in quad tips), but then again I realize there isn't a cutout in the bumper which would probably look pretty lame.

Either way, what is the size of the pipe that goes into the inlet of the muffler? The guy at autozone was clueless, and I just got my car back from the transmissions shop and haven't had a chance to take a look. Is it just 2 1/4? That was my guess. Once I know that, the guy at autozone invited me into his inventory in the back to check out his cherrybomb single in dual out muffler stock lol. I could use an adapter if I can't find an exact match.

I don't want a loud *** muffler, because I just don't dig that on a v-6, atleast I don't think. However, I do want to to be slightly louder. Any suggestions? I saw a guy on here that had a crossflow installed, matter of fact just recently. I think he said he picked up a cherrybomb from autozone for like $53.00. My goal is to be able to install these myself, but I need to find a mig welder somewhere in either mine, or my girlfriend'* family. I don't think a muffler shop would charge too very much to slap it in there either though.

Just looking for ideas... thanks!

P.*. This forum is badass lol. You guys rock... my grand marquis never had a forum quite this intelligent, populated, or experienced.
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Old 08-10-2007, 03:19 AM   #2
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Default Re: Crossflow Muffler Installation question(*)

Quote:
Originally Posted by putertopia
Either way, what is the size of the pipe that goes into the inlet of the muffler? The guy at autozone was clueless, and I just got my car back from the transmissions shop and haven't had a chance to take a look. Is it just 2 1/4?
You need to add your car, year, trim into your sig so people and can help answer your questions. But if it is a N/A 3.8 it should be 2 1/4" & If it a Supercharged 3.8 it should be 2.5" going into the muffler. A competent exhaust shop should be able to do it cheap if you bring the muffler and tips. Godspeed to you if you try to weld it up yourself when it comes to welding I should just stick with JB weld.

Ed
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Old 08-10-2007, 03:27 AM   #3
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My bad...

Signature added. I was waiting til I got to my home pc (which is used like once a month) to whip something up in photoshop... but that never happened. So I must use plain old text...
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Old 08-10-2007, 06:55 PM   #4
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Alright,
I went all over town today looking for a muffler, and between Autozone, Advance Auto Parts, Napa, and Federated, nobody could supply me with a crossflow muffler that is even relatively the same inlet size as 2 1/4 inch. I know I've seen people on here and other place pick up similar mufflers from autozone and advance auto parts. I'm not looking at emptying a paycheck into this... just want a good look and slightly more of a roar.

Any net suggestions? Or do you think a muffler shop would be nice about rigging something up? The guy at autozone said split the pipe coming out of the muffler, but that just sounds too rigged for me.
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Old 08-10-2007, 07:11 PM   #5
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Look for F-body mufflers (Camaro, Firebird, Trans-Am), as they are crossflow and in the size you are looking for.

Flowmaster 80-series are one of the style muffs you will see on here.
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Old 08-11-2007, 01:43 AM   #6
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i got a dynomax super turbo form advanced auto for about $50-$60, but it is a little on the loud side, but i like it
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Old 08-11-2007, 02:57 AM   #7
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For a good price, you can special order the Cherrybomb Vortex out of the Cherrybomb Muffler performance book at AutoZone. They're only $59, 2.5" inlet/outlet muffler.

Most people use Magnaflows, but Flowmaster and Dynomax are good choices too. The Magnaflow is $81, Dynomax Super Turbo $92, both you can order from AutoZone'* own performance book too.

Keep in mind all these are crossflow mufflers too.

Here'* a clip of mine with the Vortex on it...

http://youtube.com/watch?v=uqUAeiI0-iA
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Old 08-11-2007, 05:29 AM   #8
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im finding this thread to be very useful for me also. just one thing tho...what are the inlet & outlet sizes for an 02 sle?

thanks
-nick
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Old 08-11-2007, 03:33 PM   #9
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don't forget about the Hooker Headers Aero Chamber Mufflers !

http://www.jegs.com/webapp/wcs/store...55800_-1_11181

sound good and not a lot of money.

ROD
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