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Sorry if this has been beaten to death but I really want to do it once.

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Old 08-23-2012, 04:49 PM
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Default Sorry if this has been beaten to death but I really want to do it once.

I have a 3" SLP catback with a bullet resonator which I can't stand. I would like to remove the resontor and install a transverse muffler while running the pipes out of the back. The car has the cats & factory exhaust manifolds. I really want the old school sound (im old 45 almost 46) of a flowmaster 50 (don't care about rusting) but I read somewhere that the 80 series is no good. Is that true? I was thinking about an aerochamber but I like the tone & the zero rasp imo of the Flowmaster better. If it flows a couple of hp less I can live w/ that. I may get headers next year but need to leave the cats so I have no headaches I don't want to go crazy w/ a new full dual setup. What should I do. If it makes a difference the car will be Frost tuned by Tuesday.

I guess there is no throty bullet. That would be too easy. Please help and thanks.
Old 08-23-2012, 06:17 PM
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I am familiar with the "old school sound" of which you speak. I can tell you first hand that you won't get that sound if you retain the cats. No matter what muffers you use (or even none at all), there is a certain mellowness/smoothness that is characteristic of an exhaust system with cats. If you want it to sound old, you'd have to ditch them IMO.

I currently have the setup you're suggesting (Flowmaster with stock manifolds/cats) on my daily driver '02 car. It doesn't have the same old muscle sound as my catless, true dual '71 SBC car does with Flowmasters. Having said that, the '02 does still sound very nice though, but it's a more modern, mellow tone than my '71.

Hope that helps.

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Old 08-23-2012, 09:23 PM
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Personally, throw away the 80 series camper muffler and grab yourself a super 40 series or a thrush glasspack or cherry bomb or something like that. They have that deep old school rumble and have a good flow design so they dont rob as much power. Just my 2 cents.
Old 08-23-2012, 09:27 PM
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I have the 80 on my car. It sounds alright. It doesn't sound as good as my lt1 sounded though.
Old 08-23-2012, 11:05 PM
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Originally Posted by BlackLS1Bird
Personally, throw away the 80 series camper muffler and grab yourself a super 40 series or a thrush glasspack or cherry bomb or something like that. They have that deep old school rumble and have a good flow design so they dont rob as much power. Just my 2 cents.
Super 44 or Original 40 would be louder/deeper sounding than a Super 40. But none of those will allow for a standard mounted transverse muffler with dual outlets in the stock location.

IMO, based on what the OP posted above, glasspack style muffler/bullet isn't going to give the sound that he is looking for if he retains cats and a Y-pipe. This will be even more mellow/smooth than his current SLP resonator.

A single Super 44 in the stock location would sound pretty good, even with stock cats, if you don't mind the single outlet (maybe tuck a turndown up near the bumper so you don't really notice it). I've thought about doing this on my Camaro before, but it might not look right on a Trans Am. It still won't have the old style chambered echo and cackle of a catless system though.
Old 08-24-2012, 09:13 AM
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Thanks for all of the replies, I didn't even think about the cats changing the sound. That's why this board is great. I think a c bomb or glasspack might be a little much for me. I have no problem w/ mellow & smooth. I just hate the rattlecan.
Old 08-24-2012, 09:22 AM
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Originally Posted by RPM WS6
I am familiar with the "old school sound" of which you speak. I can tell you first hand that you won't get that sound if you retain the cats. No matter what muffers you use (or even none at all), there is a certain mellowness/smoothness that is characteristic of an exhaust system with cats. If you want it to sound old, you'd have to ditch them IMO.

I currently have the setup you're suggesting (Flowmaster with stock manifolds/cats) on my daily driver '02 car. It doesn't have the same old muscle sound as my catless, true dual '71 SBC car does with Flowmasters. Having said that, the '02 does still sound very nice though, but it's a more modern, mellow tone than my '71.

Hope that helps.
Unfortunatally it does lol, New York is out of their minds w/ emissions right behind CA so I need cats. It's all about the revenue. Maybe high flow ones later. It must sound better then the s can I have now? The volume is fine just that rattle. If you could post or send me an exhaust clip I would really appriciate it.
Old 08-24-2012, 03:21 PM
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http://www.ls1sounds.com/
Old 08-24-2012, 03:35 PM
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There are plenty of bullet mufflers that will replace that resonator that sound great .
Old 08-24-2012, 04:34 PM
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Originally Posted by NC98Z
Thanks I will check it out..
Old 08-24-2012, 04:35 PM
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Originally Posted by blk/slvr02ss
There are plenty of bullet mufflers that will replace that resonator that sound great .
Any suggestions please aside from the previous post?
Old 08-24-2012, 05:26 PM
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Just went threw my Jegs Book and Borla,Dynomax,Magnaflow,Dynatech make bullet mufflers to replace the Resonator give them a call and they will tell you what sounds good.
Old 08-25-2012, 09:30 AM
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Aside from size what is the difference between a bullet muffler & the regular transverse?
Old 08-25-2012, 09:52 AM
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Better flow but it is a lot less work and money to replace the resonator than put a transverse muffler on your car and if your going to do that your better off putting a new cat back on their w/ a transverse muffler.If you have the SLP Loudmouth 1 thats no resonator thats just a straight threw pipe to make look like its a resonator the last time i looked down one.
Old 08-25-2012, 10:09 AM
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I guess I have a II b/c it is loud but not out of control. I guess i need to find a bullet that sounds throty now. Thank im going to look at that now.
Old 08-25-2012, 11:35 AM
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Originally Posted by Carguy8888
I really want the old school sound (im old 45 almost 46) of a flowmaster 50
There is no bullet that will have the same sound that you said you liked from a Flowmaster. Bullets have a different sound from a chambered muffler.

I don't have any sound files of any of my cars, but there are tons of videos on line of LS1s with various exhaust setups.
Old 08-25-2012, 11:47 AM
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Thanks, I appriciate it.
Old 08-25-2012, 12:15 PM
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After listening I think the 80 series flowmaster will not be exact but it will get me closer to the sound I want then any bullet? Do you agree?
Old 08-25-2012, 04:56 PM
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Originally Posted by Carguy8888
After listening I think the 80 series flowmaster will not be exact but it will get me closer to the sound I want then any bullet? Do you agree?
Yes, I agree.
Old 08-25-2012, 10:54 PM
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appriciate the help.




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