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

Sleeper exhaust

Old 03-11-2009, 10:33 AM
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Default Sleeper exhaust

Is there a Y pipe out there designed to run off the stock exhaust manifolds? Instead of going with headers, I'm thinking about installing a sleeper exhaust system.
Old 03-11-2009, 10:35 AM
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Ok, well I found one made by SLP.

http://store.summitracing.com/partde...5&autoview=sku

Anyone else have a custom setup off the manifolds?
Old 03-11-2009, 10:42 AM
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Originally Posted by 96blackta
Ok, well I found one made by SLP.

http://store.summitracing.com/partde...5&autoview=sku

Anyone else have a custom setup off the manifolds?
I was going to mention looking to see if SLP made one. The one you posted is for a LS1. Other than that, you can have an exhaust shop make any y-pipe you want. The the thing that will make your exhaust a sleeper is how quiet it is. That will depend on your muffler(s).
Old 03-11-2009, 10:46 AM
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That's weird... I did the search using my make/model.

If I get it custom made, won't an exhaust shop have to bend the pipe, crimping the inside, and reduce air flow?
Old 03-11-2009, 10:50 AM
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Originally Posted by 96blackta
That's weird... I did the search using my make/model.

If I get it custom made, won't an exhaust shop have to bend the pipe, crimping the inside, and reduce air flow?
Not if they have a mandrel pipe bender...
Old 03-11-2009, 10:51 AM
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you cant really care much about airflow if you are going to keep the stock manifolds
just get a good header/ory/catback and do it right or leave it alone. otherwise you are just wasting money IMO
Old 03-11-2009, 10:53 AM
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Originally Posted by Raven97
you cant really care much about airflow if you are going to keep the stock manifolds
just get a good header/ory/catback and do it right or leave it alone. otherwise you are just wasting money IMO
^^^LOL, true.
Old 03-11-2009, 10:56 AM
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Originally Posted by Raven97
you cant really care much about airflow if you are going to keep the stock manifolds
just get a good header/ory/catback and do it right or leave it alone. otherwise you are just wasting money IMO
Thanks for your opinion, I guess? This thread isn't about headers. It's about going with a setup without them.
Old 03-11-2009, 11:00 AM
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Originally Posted by 96blackta
Thanks for your opinion, I guess? This thread isn't about headers. It's about going with a setup without them.
Looking into the Cadillac cam are we?
Old 03-11-2009, 11:01 AM
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lol, yes sir you caught me.
Old 03-11-2009, 11:03 AM
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I cant imagine why in the world you wouldn't want headers but to each his own man. Do what you want.
Old 03-11-2009, 11:06 AM
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Originally Posted by 96blackta
lol, yes sir you caught me.
Get a mandrel bent ORY pipe for stock manifolds, if they don't make one, get a custom one made. Use a quality cat back, less restriction as possible, i.e. not flowmaster. Also add a cutout before the axle.
Old 03-11-2009, 11:12 AM
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http://www.macperformance.com/store/...ategory_ID=567

this is what I use and it flows great enough for a wheel to hang. You'll have to scroll down a bit. 5th item. No cut-out on this car

Last edited by 3DFORMULA; 03-11-2009 at 11:20 AM.
Old 03-11-2009, 12:53 PM
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Originally Posted by 3DFORMULA
http://www.macperformance.com/store/...ategory_ID=567

this is what I use and it flows great enough for a wheel to hang. You'll have to scroll down a bit. 5th item. No cut-out on this car
That won't fit a 96 will it?

As a side note, is your exhaust catted?
Old 03-11-2009, 12:55 PM
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Originally Posted by 96blackta
That won't fit a 96 will it?

As a side note, is your exhaust catted?
Yes it will, you will just have to connect that y-pipe to the rest of your exhaust at an exhaust shop.
Old 03-11-2009, 01:48 PM
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Originally Posted by 96blackta
That won't fit a 96 will it?

As a side note, is your exhaust catted?
My factory cat is gutted and welded on the end of the y-pipe. Then the TSP bolts on just like a normal system. For a quieter muffler I liked my old moroso spiral pros cat-back that I had made at one time. Mellow until you hammer it.
Old 03-11-2009, 01:51 PM
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Originally Posted by 96blackta
That won't fit a 96 will it?

As a side note, is your exhaust catted?
Still trying to pass visual? Technically you won't with that y-pipe that the other poster linked, that's for pre '96-'97 vehicles. But most smog shop guys are idiots and would only notice that you have a cat (even if it's only one instead of two) and pass you.
Old 03-11-2009, 02:49 PM
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Dude dont be a idiot just get long tubes, and if emissions is a problem then get mids.....
Old 03-11-2009, 02:51 PM
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I have a '97 T/A and run the Stainless Works ORY and Borla Cat-back. The ORY bolts right up to My stock manifolds. I chose this so I can simply bolt up the catted Y pipe when its time for smog. takes about an hour to make the swap. I run the aluminized steel unit and it cost about $200 from summit. Dont forget a stainless band clamp to mate to the cat-back.

Last edited by Black1997T/A; 03-11-2009 at 02:58 PM.
Old 03-11-2009, 03:09 PM
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Originally Posted by slick1851
Dude dont be a idiot just get long tubes, and if emissions is a problem then get mids.....
Haven't seen any CARB legal mids in a long time. But I agree with the first part of your statement.

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