HicksZ Posted February 19, 2004 Report Share Posted February 19, 2004 I don't post here often but Ive been a member for a little while. I was searching through Summit for a replacement cat(high-flow preferred) for my 92 Z-34. I wasnt positive on the fit(2 1/2"?), and I checked applications for any that listed Chevy and found no Luminas. I was checking for Cat-co direct fit. Do I need to get a universal cat and get it welded on? Or is there anyone that makes a Z34 specific cat? Quote Link to comment Share on other sites More sharing options...
Crimson Fury Z Posted February 19, 2004 Report Share Posted February 19, 2004 measure the pipe's diameter, and look for a match or the size closest to your measurement Quote Link to comment Share on other sites More sharing options...
SmoothSteve3 Posted February 20, 2004 Report Share Posted February 20, 2004 Dont quote me on this, but i think that my 90' lumina 3.1 has 2.5 inch tubing before the cat, and 2.25 inch tubing after it. Not 100% sure though.... Quote Link to comment Share on other sites More sharing options...
RedZMonte Posted February 21, 2004 Report Share Posted February 21, 2004 Dont quote me on this, but i think that my 90' lumina 3.1 has 2.5 inch tubing before the cat, and 2.25 inch tubing after it. Not 100% sure though.... correct. you will need a 2.5" universal cat an have it welded in. don't get a catco. get a carsound #9006. it is a much better cat and flows much better. i sell them if you interested redzmonte@hotmail.com Quote Link to comment Share on other sites More sharing options...
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