3" Collectors 2 1/2" cat back
Thread Starter
Racer
Joined: Dec 2004
Posts: 427
Likes: 0
From: Albuquerque New Mexico
3" Collectors 2 1/2" cat back
Also posted this in tech.
Hey guys can't deciede what to do. I have 3" collectors coming off my TPIS headers, and I'm trying to hook them up to my cat back exhaust which is only 2 1/2" diameter. I know I could have an exhaust shop make me some reducers to fit, but the car is a s/c 383 and I'm wondering how much hp I would leave on the table with that kind of restriction. Opinions? What did you do? Car is running no cats and I don't intend to run them in the future.
Hey guys can't deciede what to do. I have 3" collectors coming off my TPIS headers, and I'm trying to hook them up to my cat back exhaust which is only 2 1/2" diameter. I know I could have an exhaust shop make me some reducers to fit, but the car is a s/c 383 and I'm wondering how much hp I would leave on the table with that kind of restriction. Opinions? What did you do? Car is running no cats and I don't intend to run them in the future.
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Well, the way I see it is that you've got three options
1.) Have a shop make the reducers for you and hook it up and you're good to go. $200 maybe
2.) Buy a new 3" catback system and have the shop make connection pipes for you and hook it up. ~$1000-$1400
3.) Buy yourself a welder, chop saw, and some pipe and make your own. ~$1000
If you don't want to drop big money( I know thats a relative term after the SCed 383) then I would live with the lack of hp.
If some people can get 10-15hp out of a stockish car I'm going to guess you'll be gaining 30+hp on your car if you upgrade. Remember, you can always upgrade later.
1.) Have a shop make the reducers for you and hook it up and you're good to go. $200 maybe
2.) Buy a new 3" catback system and have the shop make connection pipes for you and hook it up. ~$1000-$1400
3.) Buy yourself a welder, chop saw, and some pipe and make your own. ~$1000
If you don't want to drop big money( I know thats a relative term after the SCed 383) then I would live with the lack of hp.
If some people can get 10-15hp out of a stockish car I'm going to guess you'll be gaining 30+hp on your car if you upgrade. Remember, you can always upgrade later.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by drochau
Also posted this in tech.
Hey guys can't deciede what to do. I have 3" collectors coming off my TPIS headers, and I'm trying to hook them up to my cat back exhaust which is only 2 1/2" diameter. I know I could have an exhaust shop make me some reducers to fit, but the car is a s/c 383 and I'm wondering how much hp I would leave on the table with that kind of restriction. Opinions? What did you do? Car is running no cats and I don't intend to run them in the future.
Hey guys can't deciede what to do. I have 3" collectors coming off my TPIS headers, and I'm trying to hook them up to my cat back exhaust which is only 2 1/2" diameter. I know I could have an exhaust shop make me some reducers to fit, but the car is a s/c 383 and I'm wondering how much hp I would leave on the table with that kind of restriction. Opinions? What did you do? Car is running no cats and I don't intend to run them in the future.
Drifting
Joined: Aug 2002
Posts: 1,475
Likes: 0
From: Speedo Indiana
Originally Posted by drochau
How about cutouts at the headers and then reducers to the cat-back system
