Custom Ebay Exhaust
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Joined: Mar 2007
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From: Casper, Wyoming
Car: 1982 Camaro Z28 w/ RS groundfx
Engine: 350
Transmission: Tranzparts 700r4
Axle/Gears: 3.23's
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Joined: Apr 2007
Posts: 49
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From: Eastern PA
Car: 1983 Firebird Trans Am
Engine: 305, hopefully 350 or 400 soon
Re: Custom Ebay Exhaust
I have just purchased some from that guy on eBay. I read all of his feedback (100% pos+) and everyone that bought it said that the pipes sound GREAT. One guy did say that his young daughter could weld better but he said that he was satisified with them. I took a chance and in a few weeks I will install them and I will post how the sound and how they perform or hinder the car. I have stock 305 with a RPM intake and Edelbrock 600cfm carb. Hopefully soon upgrade the cam and get new heads. Need to sell some more stuff to get the heads hopefully soon.
Has anyone else bought these? And if so how do they sound?
This guy has sold a ton of these over the past year or however long he has sold them on eBay. I was going to post a very similar thread like this one before I bought these but we will see if taking the chance paid off.
Has anyone else bought these? And if so how do they sound?
This guy has sold a ton of these over the past year or however long he has sold them on eBay. I was going to post a very similar thread like this one before I bought these but we will see if taking the chance paid off.
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Joined: Jul 1999
Posts: 12,212
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: Custom Ebay Exhaust
That T-intersection has got to be super restrictive. Will it work? Yes. Will the engine run? Yes. Will you get good exhaust performance? No. The exhaust flow is hitting a wall, then having to make 2 90 degree bends to get out.
Maybe if that T-intersection was some kind of smooth Y-intersection, with 2 smooth 90 degree bends, like 6" radius's, it might be worth it.
Maybe if that T-intersection was some kind of smooth Y-intersection, with 2 smooth 90 degree bends, like 6" radius's, it might be worth it.
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From: Hamilton, NJ
Car: 88 Formula, 04 CTS-V, 06 Commander
Engine: 305 TBI, LS6, 4.7 V-8
Transmission: 5 spd, B&M Short Throw
Re: Custom Ebay Exhaust
That T-intersection has got to be super restrictive. Will it work? Yes. Will the engine run? Yes. Will you get good exhaust performance? No. The exhaust flow is hitting a wall, then having to make 2 90 degree bends to get out.
Maybe if that T-intersection was some kind of smooth Y-intersection, with 2 smooth 90 degree bends, like 6" radius's, it might be worth it.
Maybe if that T-intersection was some kind of smooth Y-intersection, with 2 smooth 90 degree bends, like 6" radius's, it might be worth it.
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iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: Custom Ebay Exhaust
Yeah, I saw that pic. The "chamber", is exactly what I'm talking about. The exhaust flow runs straight into a wall, turn 90 degrees, then flows out.
Some kind of y-pipe intersection will increase the flow of that system by a lot.
Not to mention, that pic shows there is no muffler, just an open pipe.
Some kind of y-pipe intersection will increase the flow of that system by a lot.
Not to mention, that pic shows there is no muffler, just an open pipe.
Last edited by Stephen; May 9, 2007 at 11:27 AM. Reason: Automerged Doublepost
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Joined: May 2005
Posts: 777
Likes: 1
From: Windsor Ontario Canada
Car: 89 jaguar xjs convertable
Engine: 89 L98 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.23 dana 44
Re: Custom Ebay Exhaust
I have just purchased some from that guy on eBay. I read all of his feedback (100% pos+) and everyone that bought it said that the pipes sound GREAT. One guy did say that his young daughter could weld better but he said that he was satisified with them. I took a chance and in a few weeks I will install them and I will post how the sound and how they perform or hinder the car. I have stock 305 with a RPM intake and Edelbrock 600cfm carb. Hopefully soon upgrade the cam and get new heads. Need to sell some more stuff to get the heads hopefully soon.
Has anyone else bought these? And if so how do they sound?
This guy has sold a ton of these over the past year or however long he has sold them on eBay. I was going to post a very similar thread like this one before I bought these but we will see if taking the chance paid off.
Has anyone else bought these? And if so how do they sound?
This guy has sold a ton of these over the past year or however long he has sold them on eBay. I was going to post a very similar thread like this one before I bought these but we will see if taking the chance paid off.
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Joined: Apr 2007
Posts: 49
Likes: 0
From: Eastern PA
Car: 1983 Firebird Trans Am
Engine: 305, hopefully 350 or 400 soon
Re: Custom Ebay Exhaust
I guess I am trying to convience myself (becuase I bought them). Actually I am trying to understand why this will not work. So if this is not good for performance and maybe this thread will help the next person who is thinking about buying this thinking like me that it would be good for performance.
I dont understand why this is "so restrictive" Stephen said the exhaust was hitting a wall then turning a 90 degree turn then out. The internals of a muffler do just that and maybe more so. Unless I am missing something. I have attached pics of muffler internals and one of them is a Flowmaster. It seems as if these pipes are less restrictive than using a Flowmaster muffler. So how would this hinder the performance?
I dont mean to defend these pipes but all I am trying to do is understand.
Thanks.
I dont understand why this is "so restrictive" Stephen said the exhaust was hitting a wall then turning a 90 degree turn then out. The internals of a muffler do just that and maybe more so. Unless I am missing something. I have attached pics of muffler internals and one of them is a Flowmaster. It seems as if these pipes are less restrictive than using a Flowmaster muffler. So how would this hinder the performance?
I dont mean to defend these pipes but all I am trying to do is understand.
Thanks.
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: Custom Ebay Exhaust
If you look the Flowmaster pic, yes it is turning 90 degrees, but it is hitting the walls at 45 degree angles, and being deflected.
A simple Y connection would help a lot instead of the T intersection. That T intersection is also probably what helps acts as a "muffler". The sound is hitting a wall, then having to bounce it's way out, rather than being deflected by angles.
Replace the T with a Y, like this.
Do 2 smooth 90 degree bends after it, like these.
And end up with something like this.
It'll work as exhaust, it could just be better, and be used for performance, instead of simple function.
A simple Y connection would help a lot instead of the T intersection. That T intersection is also probably what helps acts as a "muffler". The sound is hitting a wall, then having to bounce it's way out, rather than being deflected by angles.
Replace the T with a Y, like this.
Do 2 smooth 90 degree bends after it, like these.
And end up with something like this.
It'll work as exhaust, it could just be better, and be used for performance, instead of simple function.
Joined: Apr 2003
Posts: 1,230
Likes: 2
From: Madison, WI
Car: 1986 Camaro Z28
Engine: 400
Transmission: T5
Axle/Gears: 10 bolt Posi 3.73
Re: Custom Ebay Exhaust
This is the same size as a factory exhaust and it's also not mandrel bent! How could you expect any gains? I would imagine you could just take your muffler off your car now and that would be about the change you'd see by buying this exhaust. Just go with a 3" catback system.
Junior Member
Joined: Apr 2007
Posts: 49
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From: Eastern PA
Car: 1983 Firebird Trans Am
Engine: 305, hopefully 350 or 400 soon
Re: Custom Ebay Exhaust
Stephen - Thanks for the expliantion, I understand what you are saying now.
Codename - I thought their would be gains due to not having the muffler would be less restriction and more flow. 3" catback system is expensive. Maybe in the future but I guess I went with something I thought would be a cheaper way to have better flow and sound.
Sounds as if I may have made a bad choice.
Thanks for your replies to me.
Codename - I thought their would be gains due to not having the muffler would be less restriction and more flow. 3" catback system is expensive. Maybe in the future but I guess I went with something I thought would be a cheaper way to have better flow and sound.
Sounds as if I may have made a bad choice.
Thanks for your replies to me.
Joined: Apr 2003
Posts: 1,230
Likes: 2
From: Madison, WI
Car: 1986 Camaro Z28
Engine: 400
Transmission: T5
Axle/Gears: 10 bolt Posi 3.73
Re: Custom Ebay Exhaust
Stephen - Thanks for the expliantion, I understand what you are saying now.
Codename - I thought their would be gains due to not having the muffler would be less restriction and more flow. 3" catback system is expensive. Maybe in the future but I guess I went with something I thought would be a cheaper way to have better flow and sound.
Sounds as if I may have made a bad choice.
Thanks for your replies to me.
Codename - I thought their would be gains due to not having the muffler would be less restriction and more flow. 3" catback system is expensive. Maybe in the future but I guess I went with something I thought would be a cheaper way to have better flow and sound.
Sounds as if I may have made a bad choice.
Thanks for your replies to me.
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Joined: Aug 2006
Posts: 2,491
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From: Cleveland, Ohio
Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Re: Custom Ebay Exhaust
Stephen - Thanks for the expliantion, I understand what you are saying now.
Codename - I thought their would be gains due to not having the muffler would be less restriction and more flow. 3" catback system is expensive. Maybe in the future but I guess I went with something I thought would be a cheaper way to have better flow and sound.
Sounds as if I may have made a bad choice.
Thanks for your replies to me.
Codename - I thought their would be gains due to not having the muffler would be less restriction and more flow. 3" catback system is expensive. Maybe in the future but I guess I went with something I thought would be a cheaper way to have better flow and sound.
Sounds as if I may have made a bad choice.
Thanks for your replies to me.
P.S. That means at least 3" and mandrel bent.
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Joined: May 2005
Posts: 1,701
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From: San Diego, CA
Car: 1991 Camaro RS
Engine: LO3
Transmission: 700R4
Axle/Gears: 3.42 LS1
Re: Custom Ebay Exhaust
I honestly can't say how that setup would be any better than simply removing one's stock muffler and running a Thrush Magnum after your cat converter, and over the axle.
Seems all that comes with that "kit" is a bit of extra STOCK SIZED tubing, and removal of the stock muffler ??
Seems all that comes with that "kit" is a bit of extra STOCK SIZED tubing, and removal of the stock muffler ??
Junior Member
Joined: Apr 2007
Posts: 49
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From: Eastern PA
Car: 1983 Firebird Trans Am
Engine: 305, hopefully 350 or 400 soon
Re: Custom Ebay Exhaust
When I install this exhaust, I am afraid that it is going to be way too loud. (Due to not having a catalyic conv. and now with this ebay exhaust with no muffler) Dont get me wrong, I do want it loud, but too loud, I guess there is a fine line. Would it be possible to put a glasspack or bullet muffler where the catalylic conv. was? I just want to know if it would work there, usually the muffler is near the exhaust outlet.
My bro-in-law has a 79 Camaro and he is running the exhaust out of the headers through 2-1/2" pipe to bullet mufflers and out the side about the middle of the door. He has a bored out 350 that is pretty built up. And his is loud, I would like it to be about as loud as his. My other question is being that mine is running through original size pipe for a 1983 TA (and the TA is right now 305 with RPM intake and Edelbrock 600 cfm carb.) to the ebay exhaust splitter that separates the exhaust out the outlet pipes that are 3", would that be not as loud going through the longer pipes that are not quite as large as the 79 Camaros? Or would it be too loud without any kind of muffler or catalytic conv.? Any thoughts on this?
Any info would be helpful. Thanks!
My bro-in-law has a 79 Camaro and he is running the exhaust out of the headers through 2-1/2" pipe to bullet mufflers and out the side about the middle of the door. He has a bored out 350 that is pretty built up. And his is loud, I would like it to be about as loud as his. My other question is being that mine is running through original size pipe for a 1983 TA (and the TA is right now 305 with RPM intake and Edelbrock 600 cfm carb.) to the ebay exhaust splitter that separates the exhaust out the outlet pipes that are 3", would that be not as loud going through the longer pipes that are not quite as large as the 79 Camaros? Or would it be too loud without any kind of muffler or catalytic conv.? Any thoughts on this?
Any info would be helpful. Thanks!
Senior Member
Joined: May 2005
Posts: 777
Likes: 1
From: Windsor Ontario Canada
Car: 89 jaguar xjs convertable
Engine: 89 L98 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.23 dana 44
Re: Custom Ebay Exhaust
It will be loud....but not as loud as the 79. The length of your exhaust will help to reduce sound decibles but that 90* wall will kill any performance. Lesson learned? You got what you paid for. Stock replacement exhaust with someones uneducated idea of hi flo. You can use most of what you got there and just add a performance muffler at the rear. You'll get decent sound (with no cat in your car) and probably better flo than that piece he sold you.
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From: California
Car: 1982 Trans Am & 1982 Corvette
Engine: L-98 with LO-3 induction. 350 CFI
Transmission: 5 speed and vette has 700r4
Axle/Gears: 373's in T/A .. vette unknown
Re: Custom Ebay Exhaust
I once had a setup like this on my car (no muffler) and yes my car had a CAT with edelbrock headers.
It sounded obnoxious. worse then a ricecar ...... now my friends 1990 vette has whats called muffler eliminators probably just a baffle and it sounds real nice.
get ready to get alot of cops attention with that system. Especially if your running without a CAT
It sounded obnoxious. worse then a ricecar ...... now my friends 1990 vette has whats called muffler eliminators probably just a baffle and it sounds real nice.
get ready to get alot of cops attention with that system. Especially if your running without a CAT
Junior Member
Joined: Apr 2007
Posts: 49
Likes: 0
From: Eastern PA
Car: 1983 Firebird Trans Am
Engine: 305, hopefully 350 or 400 soon
Re: Custom Ebay Exhaust
I do now understand, and Rob Wade mentioned getting a performance muffler and I think that is what I am going to do. But the choices...
I looked at other threads to see what people say about these
1. Flowmaster 80 series
2. Dynomax ultraflow
3. Hooker maximum flow
Does anyone have a suggestion which one would be the best sound or any others that are not on the list? For example loud, aggressive and deep sounding.
I looked at other threads to see what people say about these
1. Flowmaster 80 series
2. Dynomax ultraflow
3. Hooker maximum flow
Does anyone have a suggestion which one would be the best sound or any others that are not on the list? For example loud, aggressive and deep sounding.
Senior Member
Joined: May 2005
Posts: 777
Likes: 1
From: Windsor Ontario Canada
Car: 89 jaguar xjs convertable
Engine: 89 L98 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.23 dana 44
Re: Custom Ebay Exhaust
Try doing a search for audio clips. "Good sounding" is very subjective. It will also depend on what others have done to their motors/you have done to your motor.
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