cat gutting question
Thread Starter
Member
Joined: May 2003
Posts: 190
Likes: 0
From: Charleston, SC
Car: 87' Red TA w/ 92k miles
Engine: 305 TPI
Transmission: 700R4
cat gutting question
Gutting the cat...is it really worth it...I live in northwest Florida and have no emissions checks....what are the pros and cons...i have a flowmaster 80s and i don't think they are loud enough...will a gutted cat be too loud...my pop told me not to **** with the cat but will he notice if my neigbor and I gut it one day...whats your opinions...can I play it off and say the the muffler just got broken in
...whats your opinions...and whats the easiest way to gut it...Thanks ahead...
...whats your opinions...and whats the easiest way to gut it...Thanks ahead... Senior Member
iTrader: (2)
Joined: Sep 2002
Posts: 766
Likes: 0
From: Central Va.
Car: 82' Z28 IROC Clone (SOLD)
Engine: 355
Transmission: Built TH-350
Axle/Gears: 3.73 Moser 12 bolt
If you just gut it you will be left with a "Hollow" kinda sound. It will be a little louder, But not too bad, A big problem will be, Alot of exhaust shop wont touch a vehicle with a gutted cat, Around here the best shop around wouldn't do my catback, So I went out and bought a high-flow, I am very happy, Cant wait to get al my new stuff on.
Thread Starter
Member
Joined: May 2003
Posts: 190
Likes: 0
From: Charleston, SC
Car: 87' Red TA w/ 92k miles
Engine: 305 TPI
Transmission: 700R4
What do you recommend as a good replacement Cat for an 87' TA??? In other words whats the cheapest but best bang for the buck cat...Thanks
Senior Member
iTrader: (2)
Joined: Sep 2002
Posts: 766
Likes: 0
From: Central Va.
Car: 82' Z28 IROC Clone (SOLD)
Engine: 355
Transmission: Built TH-350
Axle/Gears: 3.73 Moser 12 bolt
I got my Catco for $37 off ebay...Its the same price for all sizes...I got mine in 3 inch so the exhaust shop can fab the rest 3 inch
Trending Topics
Joined: Nov 2002
Posts: 491
Likes: 1
From: Wichita, KS
Car: 88 Trans Am GTA
Engine: 5.1L Gen III
Transmission: T56
Axle/Gears: 3.70
shouldn't cause any codes, and a 93 is NOT OBD II, I think the first OBD II cars were out in 95 with all of them being OBD II in 96 or 97
Personally I wouldn't gut the cat, first of all, it won't flow very well, better than an ungutted cat but not nearly as well as a pipe. Same with sound, it'll be louder but not as loud as a pipe. Thirdly you'll be killing a perfectly good cat, which could be expensive to replace if your state ever decides to do smog testing. Also if you sell your car out of state you may create some problems for the new owner. If you only have to pass a visual test you could gut your cat and shove a 3" pipe through it, making a straight pipe out of it.
Personally I wouldn't gut the cat, first of all, it won't flow very well, better than an ungutted cat but not nearly as well as a pipe. Same with sound, it'll be louder but not as loud as a pipe. Thirdly you'll be killing a perfectly good cat, which could be expensive to replace if your state ever decides to do smog testing. Also if you sell your car out of state you may create some problems for the new owner. If you only have to pass a visual test you could gut your cat and shove a 3" pipe through it, making a straight pipe out of it.
if you are going to go threw all that effort just get a pipe made with a rounded flare that goes to the cat back and cut it the right lenght and take the original cat and just take off the shell by prying open the bends on the side and just weld it on the pipe and it will look just like a cat when looking under ur car.
Supreme Member
iTrader: (1)
Joined: May 2001
Posts: 1,638
Likes: 0
From: Greenwood, Indiana
Car: 1984 Trans Am
Engine: Vortec 355
Transmission: TH-700R4
Axle/Gears: GM Axles and GM 3.73
i gutted my cat and gained 1.2 seconds in the 1/4 mile...i was told that this was a fluke and not to endorse it but i was happy with my results...and yes my exhaust got louder.......only problem is that since my engine is old and worn out....a lot more of the smoke makes its way through the exhaust than b4 i gutted it....
btw just incase u were wondering... i went from a 15.9 to a 14.7...
btw just incase u were wondering... i went from a 15.9 to a 14.7...
Thread
Thread Starter
Forum
Replies
Last Post
ambainb
Camaros for Sale
11
Apr 25, 2016 09:21 PM






