yet another exhaust question

[Chevyracincamaro]

would someone be so kind as to tell me the factory exhaust set up for the early 4th gen z28, more specifically one cat or two and pipe diameter. any other info would appreciated, naturally. thanx peeps

[89IROC&RS]

hmm, not sure on pipe diameter, but there are two cats, they bolt right onto the manifolds, up by the transmission, and then there is a Y pipe after the two cats to join the exhausts together. then back to a muffler and twin tips.

[BlkCamaroSS]

I believe the original pipe diameter is 2.5 inches, but I don't remember for sure cause it's been so long since I did anything with my exhaust...

[PowerCrazy]

im pretty sure that it's 2 1/2" pipe all the way, although im not sure that ALL 4th gens had dual cats, i think some of the earlier ones had only one cat, i might be thinking of the v6's though, im not sure. the stock exhuast systems on the z28's are nice but there's always room for improvment.

[Chevyracincamaro]

i thought that i heard the earlier 4th gen (93-94, maybe 95) and single cat but im definitely not sure, and 2.5" piping sounds about right. i just wanted to make sure i get the correct numbers numbers.

[PowerCrazy]

just thought of it, there are differences between the 93-95 within the 93-97 year bracket of the LT1, and then there are further differences between the 96 and 97, the 97 is a lot like the 98+ without the LS1 and some other little things. but the difference in this case i believe was that 93-95 was single cat and 96-97 had dual cats. im pretty sure that's what it is, someone correct me if im wrong

[89IROC&RS]

id love to, but i honestly cant say off the top of me head