LT1-LT4 Modifications 1993-97 Gen II Small Block V8

slp 2otl

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Old 04-24-2008, 11:45 AM
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didn't the "factory" 2otL have a silencer (i.e. the cone of silence) in them, making them noticably quieter?

I love the look, I had a dynomax kit on my '86 Z28 that was a 2otL design
Old 04-24-2008, 11:50 AM
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Originally Posted by fast
didn't the "factory" 2otL have a silencer (i.e. the cone of silence) in them, making them noticably quieter?

I love the look, I had a dynomax kit on my '86 Z28 that was a 2otL design
Yeah they sure did.
Old 04-24-2008, 01:07 PM
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yes but you can take the cone of silence out
Old 04-24-2008, 02:27 PM
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Ok, so where is this "cone of silence"? And exactly where is it? I'd like to get rid of it, if all it does is quiet the car down. Is that its only purpose?
Old 04-24-2008, 02:38 PM
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Originally Posted by fast
didn't the "factory" 2otL have a silencer (i.e. the cone of silence) in them, making them noticably quieter?

I love the look, I had a dynomax kit on my '86 Z28 that was a 2otL design
For '97 models only.
Old 04-24-2008, 03:18 PM
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is this not the true SLP TOTL? every Firehawk owner i've encountered and those that post on Firehawk.org , in some of the signatures have TOTL that describes the SLP exhaust for the Firehawk's. i've never heard TOTL as you guys are referring to.

Old 04-24-2008, 04:37 PM
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^^^^2OTL: 2 on the left
TOTL: two on the left
Old 04-24-2008, 07:25 PM
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I have this exhaust w/ y pipe and Pacesetter LTs no cats or rear o2s

It doesnt seem that loud though so if there is a silencer on it I want to know where it is and how to remove it. My car is the 97 SS

I would do a sound clip for ya but not to computer savy with video
Old 04-24-2008, 07:29 PM
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Originally Posted by seanaugustus
I have this exhaust w/ y pipe and Pacesetter LTs no cats or rear o2s

It doesnt seem that loud though so if there is a silencer on it I want to know where it is and how to remove it. My car is the 97 SS

I would do a sound clip for ya but not to computer savy with video
look at the bottom of this page it somewhat explains:
http://ls1sounds.com/slp_2otl.htm
Old 04-25-2008, 07:28 AM
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Originally Posted by 95Firehawk
Ok, so where is this "cone of silence"? And exactly where is it? I'd like to get rid of it, if all it does is quiet the car down. Is that its only purpose?
The cone of silence is located right at the opening at the muffler just at the end of the over the axel pipe, I had mine removed about eight years ago at a local muffler shop for $30.00. There was an audiable difference.
Old 04-25-2008, 09:26 AM
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My 2OTL muffler came off of a 97 SS, and when I bought it, I bought it with the over-the-axle pipe still attached, so the cone of silence was still in there.

Technically, the cone isn't in the muffler, it's in the over-the-axle pipe. They basically have an insert that necks down to about a 1 3/4" diameter. I removed mine after I got curious to know if it was still in there.

I'll post a sound clip when I get mine put on. I'm still running the stock muffler right now. 383 w/ 230-236/112 cam with SLP single cat headers, Random Tech cat. Honestly, it sounds good even through the stock muffler, but you can tell the engine is muffled and wants to breathe.
Old 04-25-2008, 10:21 AM
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I bought my 97 SS with the slp 2otl previously replaced with a flowmaster muffler (I don't know why). Fortunately there was a guy in the regional section selling a 2otl! I picked it up yesterday for $50. I am going to install it after I rebuild my engine.
Old 04-27-2008, 10:16 AM
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Does anybody know if you can still buy this catback from any of our sponsors? >
Old 04-27-2008, 11:16 AM
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Originally Posted by flyinZ
Does anybody know if you can still buy this catback from any of our sponsors? >
I don't think you can, as SLP discontinued it several years ago.
Old 05-01-2008, 10:32 PM
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so is the "cone of silence" on '95 models? (firehawk)
Old 05-02-2008, 02:29 AM
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hey, have you guys ever heard of ls1sounds.com??? it has clips of a ton of exhaust setups, here is a link to the slp 2otl... http://www.ls1sounds.com/slp_2otl.htm



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