LT1 exhaust
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
I doubt that you'll notice much if any difference. I'd recommended leaving the cats alone, they're not much of a restriction on an LT1 car. Instead remove the resonator and replace it with an X-pipe or cross-over. Any decent exhaust shop can do this. The stock LT1 mufflers sans resonator sound very good. Louder but not overwhelming and with a distinctive, muscular sound. Try it you'll like it..... 
Le Mans Master
Joined: Dec 2004
Posts: 5,488
Likes: 1,352
I doubt that you'll notice much if any difference. I'd recommended leaving the cats alone, they're not much of a restriction on an LT1 car. Instead remove the resonator and replace it with an X-pipe or cross-over. Any decent exhaust shop can do this. The stock LT1 mufflers sans resonator sound very good. Louder but not overwhelming and with a distinctive, muscular sound. Try it you'll like it.....
Thread Starter
Intermediate
Joined: Oct 2007
Posts: 42
Likes: 1
Ya I guess i will try that, I dont want a loud car but its just so quiet right now you cant even hear it. I would like just a little bit more rumble. As for the resale about the cats I am from Canada and we dont need them here. But maybe I will just take the cats off and the resonators.
Le Mans Master
Joined: Dec 2004
Posts: 5,488
Likes: 1,352
Ya I guess i will try that, I dont want a loud car but its just so quiet right now you cant even hear it. I would like just a little bit more rumble. As for the resale about the cats I am from Canada and we dont need them here. But maybe I will just take the cats off and the resonators.
Le Mans Master
Joined: Dec 2004
Posts: 5,488
Likes: 1,352
Here in the states you can remove the mufflers and SOME cars come from the factory without mufflers ! The Dodge Neon SRT4 has no mufflers for example. I can't imagine why you would have to keep them on the car. Good luck and f.w.i.w. removing the mufflers and replacing the LT1 tips can be had for about $100.00 or you can buy "muffler eliminators" for a couple of hundred from all the Corvette catalog houses. All those are is straight pipes with tips, bent to fit. Good Luck !!
Le Mans Master
Joined: Dec 2006
Posts: 5,139
Likes: 482
From: H-Town Texas
I took the mufflers off mine and replaced the resonator with a Magnaflow dual in dual out muffler. It has a built in crossover and flows really well. As far as the sound, for me it is perfect. Louder but anywhere near obnoxious. I get lots of compliments and no funny looks from the Police.
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