Simple question, please answer...

[SlimJim1284]

On a STOCK 99 firebird what is the pipe diameter size of the INLET of the catalitic converter?

[Bluebird]

Inlet Is 3".

[JVT007]

yeah i need to know this too

so is it 3 in 2.5 out?

or 3 both.

[SlimJim1284]

<blockquote>quote:</font><hr>Originally posted by Bluebird:
Inlet Is 3".<hr></blockquote>

F***! I just got a 2.5" Why do they make it smaller than stock, damn bastards, should i try to return it and get the 3 inch?

[pigglyroot]

any exhaust shop has pipe reducers for like 5$

[SlimJim1284]

<blockquote>quote:</font><hr>Originally posted by pigglyroot:
any exhaust shop has pipe reducers for like 5$<hr></blockquote>

Reducer!? I thought I wanted to go BIGger! is that easy to do or should i just get the 3" catco. Right now i got the 2.5"ID in and 2.5"OD out.

[SlimJim1284]

Is it easy to change the 2.5"inlet to a 3"inlet?

(there is a minor dent in the one i got so if i have to i have the perfect excuse to return it and get the 3 inch)

Is it worth trying to enlarge the opening or should i just buy the 3"??

[99Camaro99]

<blockquote>quote:</font><hr>Originally posted by JVT007:
so is it 3 in 2.5 out?<hr></blockquote>

try 3" in, 2.25" out [img]tongue.gif[/img]

[Bluebird]

<blockquote>quote:</font><hr>SlimJim1284 Is it easy to change the 2.5"inlet to a 3"inlet?

Is it worth trying to enlarge the opening or should i just buy the 3"??
<hr></blockquote>

I was wondering the same thing! Yes the Stock Cat on the 3.8 is 3"In/2.25"out. I now have a 2.5"In/Out Magnaflow Cat on my car, but I now want to go 3"! [img]graemlins/dunce.gif[/img]

Any one know?

[Ttop34]

I'm pretty sure that the stock cat is 3" in and 2 1/4" out, atleast mine was. All of the pipe after the cat is 2 1/4" inside diameter, about 2 1/2" outside diameter with about 1/8" thick pipe.

[SlimJim1284]

<blockquote>quote:</font><hr>Originally posted by Ttop34:
I'm pretty sure that the stock cat is 3" in and 2 1/4" out, atleast mine was. All of the pipe after the cat is 2 1/4" inside diameter, about 2 1/2" outside diameter with about 1/8" thick pipe.<hr></blockquote>

wtf, thats what the dimentions of my american thunder are!! what a ripoff, man i suck at life. I want an Ls1. Really bad.

[ May 02, 2003: Message edited by: SlimJim1284 ]</p>