i want to put on edelbrock headers with a 3" y pipe, then put it to my 2.5" cat back, my question is do they make a cat that is 3" in, 2.5" out, or do i need a converter of some sort

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Trent
---Car---
89 Firebird
305 L03 TBI A4
t-tops
Open Element Edelbrock Aircleaner w/ K&N air filter
Summit Chrome Valve Covers

---Stero---
Pioneer DEH-P730 Premium
Infinity 2way 4652 4x6's
Pioneer 4way ts-a6985 6x9's
profile cl640 110x4

Future:im profile 1200sx 900watt x 1, and a pioneer cdx-p1270 12 disk cd changer

 

You get a 3" in/out converter, then get a 3" > 2.5" reducer to connect to your exhaust. Or upgrade your exhaust to 3".

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-

 

I have 2.25" I pipe right now. When I got my headers and saw how big 3" really is I was thinking "I'm an idiot, I should have finished the catback first" I promply started looking for a 3" I pipe and found it at dynomax for $120.

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-Tas
'89 Formula WS.6

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