LT4 Mufflers anyone?
Thread Starter
Melting Slicks
Joined: Oct 2001
Posts: 2,786
Likes: 22
From: Cary NC
LT4 Mufflers anyone?
Has anyone tried these??
LT4-Mufflers
http://www.madvet.com/shop?frame=1.119.4433
Just curious on the difference over stock LT1 mufflers.
I'm looking for a little bit better flow but I don't want the noise/resonance associated with many of the aftermarket ones.
Thanks, Graham
LT4-Mufflers
http://www.madvet.com/shop?frame=1.119.4433
Just curious on the difference over stock LT1 mufflers.
I'm looking for a little bit better flow but I don't want the noise/resonance associated with many of the aftermarket ones.
Thanks, Graham
Race Director
Joined: Aug 2003
Posts: 11,043
Likes: 3
From: San Jose Pat Tillman - American Hero
Hmm...those don't look anything like the tips that were on my factory LT4 system. I'm not sure if the flow is any better over what you've got on your LT1. To my knowledge, the only difference between the two systems was an H-pipe welded into the LT4. And FWIW, you can find LT4 catbacks anywhere from $25 to Free in the "For Sale" section all week long. Most people just want you to come pick it up or pay for shipping. Best of luck!
Race Director
Joined: Dec 2002
Posts: 13,348
Likes: 233
From: SCMR Rat Pack'r Charter Member..Great Bend KS
Thread Starter
Melting Slicks
Joined: Oct 2001
Posts: 2,786
Likes: 22
From: Cary NC
Ok thanks. I figured LT4 mufflers were the same as LT1. The ones they show look just like their other ones with ZR-1 tips. Was just curious. I'm trying to find a happy medium with a mid-tone and no resonance. I tried Magnaflows and those were too much. Can't really justify doing a Corsa setup due to cost.
Safety Car
Joined: Sep 2000
Posts: 3,524
Likes: 4
From: Hinckley Ohio
Interesting that pictorially it includes an H-pipe behind the resonator, just like the OEM LT4 exhaust. Non of the other after market systems I have seen include this H-pipe.
The tips are definately not OEM style for an LT4..
Good price for a complete system....wonder what material..
The tips are definately not OEM style for an LT4..
Good price for a complete system....wonder what material..
Race Director
Joined: Mar 1999
Posts: 16,950
Likes: 0
From: Stafford, Virginia Kittah, Kittah, Kittah...
I had an LT4 catback on my previous LT1 car... I ended up getting the catback to replace the POS Dynomax mufflers...
One thing I noticed about the LT4 system was that it was much quieter than the stock LT1 system for some reason... I'm guessing it was the crossover at the rear right before the mufflers...
It was kind of funny, my Vette was quieter than my Eldorado, and the Eldo was running the stock mufflers...
Those are definately not stock mufflers in the pictures though... It does appear to be LT4 piping though, you can see the crossover at the rear...
One thing I noticed about the LT4 system was that it was much quieter than the stock LT1 system for some reason... I'm guessing it was the crossover at the rear right before the mufflers...
It was kind of funny, my Vette was quieter than my Eldorado, and the Eldo was running the stock mufflers...
Those are definately not stock mufflers in the pictures though... It does appear to be LT4 piping though, you can see the crossover at the rear...
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Thread Starter
Melting Slicks
Joined: Oct 2001
Posts: 2,786
Likes: 22
From: Cary NC
Originally Posted by wake
I had an LT4 catback on my previous LT1 car... I ended up getting the catback to replace the POS Dynomax mufflers...
One thing I noticed about the LT4 system was that it was much quieter than the stock LT1 system for some reason... I'm guessing it was the crossover at the rear right before the mufflers...
It was kind of funny, my Vette was quieter than my Eldorado, and the Eldo was running the stock mufflers...
Those are definately not stock mufflers in the pictures though... It does appear to be LT4 piping though, you can see the crossover at the rear...
One thing I noticed about the LT4 system was that it was much quieter than the stock LT1 system for some reason... I'm guessing it was the crossover at the rear right before the mufflers...
It was kind of funny, my Vette was quieter than my Eldorado, and the Eldo was running the stock mufflers...
Those are definately not stock mufflers in the pictures though... It does appear to be LT4 piping though, you can see the crossover at the rear...
In your sig: Flowmaster Force II Cat-Back System (No resonance)
You have this package with no resonance? I ditched the idea of that package because I heard that it has enough resonance to be a nuisance. I can find that package for about $500. Is it still resonance free? Did you get anywhere near the HP/TQ gains they advertise?
I had thought about using some DeltaFlow 40s or 50s and custom tips instead of the LT1 cans as an option.
Graham
Melting Slicks
Joined: Jun 2004
Posts: 3,032
Likes: 4
Originally Posted by vms4evr
Jim,
In your sig: Flowmaster Force II Cat-Back System (No resonance)
You have this package with no resonance? I ditched the idea of that package because I heard that it has enough resonance to be a nuisance. I can find that package for about $500. Is it still resonance free? Did you get anywhere near the HP/TQ gains they advertise?
I had thought about using some DeltaFlow 40s or 50s and custom tips instead of the LT1 cans as an option.
Graham
In your sig: Flowmaster Force II Cat-Back System (No resonance)
You have this package with no resonance? I ditched the idea of that package because I heard that it has enough resonance to be a nuisance. I can find that package for about $500. Is it still resonance free? Did you get anywhere near the HP/TQ gains they advertise?
I had thought about using some DeltaFlow 40s or 50s and custom tips instead of the LT1 cans as an option.
Graham
As far as the original post... You can order those pieces separate... I think that piping, with a pair of flowmasters (from summit), instead of the listed mufflers would be a good combo... The piping look fine (as long as it's 2 3/4"), I just dunno about those mufflers... I dont like that there isnt a name with em...
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by vms4evr
Has anyone tried these??
LT4-Mufflers
http://www.madvet.com/shop?frame=1.119.4433
Just curious on the difference over stock LT1 mufflers.
I'm looking for a little bit better flow but I don't want the noise/resonance associated with many of the aftermarket ones.
Thanks, Graham
LT4-Mufflers
http://www.madvet.com/shop?frame=1.119.4433
Just curious on the difference over stock LT1 mufflers.
I'm looking for a little bit better flow but I don't want the noise/resonance associated with many of the aftermarket ones.
Thanks, Graham
Thats a pretty good deal on a factory replacement system thats complete. For a decent "quiet" exhaust you could use their LT4 resonator assembly and add a set of Borlas for the mufflers. Its a full 2.75" system that would perform well and quietly on a engine with mild performance mods.
Race Director
Joined: Mar 1999
Posts: 16,950
Likes: 0
From: Stafford, Virginia Kittah, Kittah, Kittah...
Originally Posted by vms4evr
Jim,
In your sig: Flowmaster Force II Cat-Back System (No resonance)
You have this package with no resonance? I ditched the idea of that package because I heard that it has enough resonance to be a nuisance. I can find that package for about $500. Is it still resonance free? Did you get anywhere near the HP/TQ gains they advertise?
I had thought about using some DeltaFlow 40s or 50s and custom tips instead of the LT1 cans as an option.
Graham
In your sig: Flowmaster Force II Cat-Back System (No resonance)
You have this package with no resonance? I ditched the idea of that package because I heard that it has enough resonance to be a nuisance. I can find that package for about $500. Is it still resonance free? Did you get anywhere near the HP/TQ gains they advertise?
I had thought about using some DeltaFlow 40s or 50s and custom tips instead of the LT1 cans as an option.
Graham
The older package (American Thunder) had resonance issues from what I read when I was researching catback systems... The Force II was supposed to be more mellow system, so I took a chance and have been happy ever since...
The only problem which seems common is fitment... If you're installing it yourself, be prepared to do some pipe bending/modifications to the rear piece that goes under the rear diff... A few of us on the forum have had the same problem... If I would have known that ahead of time I would have had a shop install it where they have the right equipment and experience in making things fit right...
I don't know about HP gains as I haven't had this car on the dyno... I bought it for sound more than anything else...
Race Director
Joined: Mar 1999
Posts: 16,950
Likes: 0
From: Stafford, Virginia Kittah, Kittah, Kittah...
Originally Posted by mikey whipreck
Where can you find that system for $500? I was looking at one of those for my Vette...
Thread Starter
Melting Slicks
Joined: Oct 2001
Posts: 2,786
Likes: 22
From: Cary NC
Originally Posted by wake
Yes, this system has no resonance issues... It's not quite as loud as traditional Flowmaster systems but it does sound so much better than stock...
The older package (American Thunder) had resonance issues from what I read when I was researching catback systems... The Force II was supposed to be more mellow system, so I took a chance and have been happy ever since...
The only problem which seems common is fitment... If you're installing it yourself, be prepared to do some pipe bending/modifications to the rear piece that goes under the rear diff... A few of us on the forum have had the same problem... If I would have known that ahead of time I would have had a shop install it where they have the right equipment and experience in making things fit right...
I don't know about HP gains as I haven't had this car on the dyno... I bought it for sound more than anything else...
The older package (American Thunder) had resonance issues from what I read when I was researching catback systems... The Force II was supposed to be more mellow system, so I took a chance and have been happy ever since...
The only problem which seems common is fitment... If you're installing it yourself, be prepared to do some pipe bending/modifications to the rear piece that goes under the rear diff... A few of us on the forum have had the same problem... If I would have known that ahead of time I would have had a shop install it where they have the right equipment and experience in making things fit right...
I don't know about HP gains as I haven't had this car on the dyno... I bought it for sound more than anything else...
