gasassorcash

I want to run a 3 inch cat back in my 84 Z 28 but I can't find one in any catalogs. do all 3rd gen F-bodies have the same exhaust tunnels and if so will all popular cat back systems install without interference?

ChaosRanger

Welcome to the boards ...
Try doing a search .... this topic is talked about all the time.

Try going to http://www.jegs.com or http://www.summitracing.com and get there catalog for starters.

taken from Jegs:
part #157-14888
http://www.jegs.com/cgi-bin/ncommerc...64&prmenbr=361

jd13

All thirdgen exhaust is pretty much the same. If you buy any 3" catback made for a thirdgen, it'll go in without any major headaches. It's possible a bracket may need to be moved here or there, but it's no big deal.

Momar

Get one that is listed for a tpi car. The only difference is that they have a different cat flange. You will have to have it welded or get a newer style cat. If you do headers at the same time, just get everything for a newer tpi car and it will all bolt right in instead of having to do the extra welding.

Ben

gasassorcash

I relly appreciate all the input on this . I've been looking thru Summit and all I could find was a 2 1/2 inch system for my year and I assume It's for a stock engine. Iwant to put the 3 inch in w/ my sbc 400 that allready has edelbrock headers that go to a dual input cat w/ a single 2 1/2 inch output. I just needed to make sure that any 3 inch cat back I ordered was going to fit in my 84.