Is this bullcrap or what?
Thread Starter
Drifting
Joined: Oct 2001
Posts: 1,648
Likes: 1
From: Denham Springs Louisiana
Is this bullcrap or what?
I was told that the stock exhaust pipes on our LT1/LT4s only look like 3" diameter pipes but actually have another smaller pipe inside of them. Since I have never taken my exhaust apart, I do not know if this is true or not. (I am waiting on my Magnaflows to arrive for installation) My common sense tells me that is CRAP! And how about the factory resonator, what does it look like inside? Does the "H" pipe or "X" pipe replace the resonator? What are the benefits? Thanks. :thumbs:
Team Owner
Joined: Sep 2003
Posts: 25,295
Likes: 4
From: I'm the walkin dude I can see all of the world...
St. Jude Donor '03
Re: Is this bullcrap or what? (TorchRedXCVI)
That is bull crap and a half. I have sawed through a couple of stockers. The are what the appear to be. :yesnod:
Race Director
Joined: Mar 1999
Posts: 16,950
Likes: 0
From: Stafford, Virginia Kittah, Kittah, Kittah...
Re: Is this bullcrap or what? (TorchRedXCVI)
Not sure about smaller pipe, but I thought they were 2 3/4" pipes and necked down to 2 1/2 at the muffler, and maybe at the resonator if I remember correctly...
Racer
Joined: Jun 2001
Posts: 435
Likes: 0
From: How did I get here? AZ
Re: Is this bullcrap or what? (comp94)
i dont know about the newer ones, but the older ones, like my 85 have what you describe as an inner pipe. the front 'y' does, i hacked into it last week.
Instructor
Joined: Apr 2004
Posts: 240
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From: St. Louis MO
Re: Is this bullcrap or what? (want2drivemy85)
It's called double-walled pipe, and it's very common on foreign cars, especially Honda.
I don't remember seeing that on any newer Vette that I've done.
Plus, once you get passed 2 1/2 pipe, there is very little if any difference between that and 2 3/4 and 3 inch.
I don't remember seeing that on any newer Vette that I've done.
Plus, once you get passed 2 1/2 pipe, there is very little if any difference between that and 2 3/4 and 3 inch.
Instructor
Joined: Feb 2004
Posts: 146
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From: louisville ky
Re: Is this bullcrap or what? (TorchRedXCVI)
Yes this is :bs And I can only tell you that at first I only replaced the mufflers on my 96 with Magnaflows. It kinda sounded annoying at cruising speeds. Then I had the resonator removed and replaced with straight pipe and a H or crossover up by the transmission. It now has a deep mellow tone and I love it. Hope this helps.
Thread Starter
Drifting
Joined: Oct 2001
Posts: 1,648
Likes: 1
From: Denham Springs Louisiana
Re: Is this bullcrap or what? (GR8FUL1)
Thanks for the info guys! My Magnaflows should be waiting for me when I get home. Too bad the engine doesn't arrive at the shop until tomorrow. :thumbs:
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Burning Brakes
Joined: Jun 2002
Posts: 1,159
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From: royal palm beach florida
Re: Is this bullcrap or what? (comp94)
torch i dont know where you are getting this info from but it is bull. as victor said above the pipes size are what they apear to be
Drifting
Joined: Jan 2002
Posts: 1,261
Likes: 4
From: Middle River MD
Re: Is this bullcrap or what? (89stock)
i have an '89 with the stock system, anybody know if i'm being robbed of power to?
If you plan to mod your vette its the best place to start.
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: Is this bullcrap or what? (HeeHaw89)
:iagree:
The L98 system has pre-cats which goes into a single pipe through a cat, back into dual mufflers.
The LT1 has dual cats, into a center resonator, which is two pipes, back to two mufflers. The LT1 is a much better flowing system from the factory.
The L98 system has pre-cats which goes into a single pipe through a cat, back into dual mufflers.
The LT1 has dual cats, into a center resonator, which is two pipes, back to two mufflers. The LT1 is a much better flowing system from the factory.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Re: Is this bullcrap or what? (HeeHaw89)
i have an '89 with the stock system, anybody know if i'm being robbed of power to?
YES - The stock L98 exhaust is more restrictive than LT1 exhaust.
If you plan to mod your vette its the best place to start.
YES - The stock L98 exhaust is more restrictive than LT1 exhaust.
If you plan to mod your vette its the best place to start.
the pup cats are not the real problem, it's the big one in the middle!
overall, the L98 exhaust is smaller and much more restrictive.