Difference in single cat and dual cat header/y pipe

i have a 97 ss with shorties on it now with the stock y pipe and gutted cats. I bought a set of longtubes for it but they are for a 95 single cat.... what am i gonna have to do about the y pipe? whats the difference?

i have a 97 ss with shorties on it now with the stock y pipe and gutted cats. I bought a set of longtubes for it but they are for a 95 single cat.... what am i gonna have to do about the y pipe? whats the difference?

It doesn't matter if you have a stock single cat y-pipe or a stock dual-cat y-pipe, neither of them will work with long tube headers due to the dimensions. What brand long tubes did you buy?

It doesn't matter if you have a stock single cat y-pipe or a stock dual-cat y-pipe, neither of them will work with long tube headers due to the dimensions. What brand long tubes did you buy?

they are jet hot... i have a y pipe in 5 pieces ... i just wanna know the difference in the two ...

they are jet hot... i have a y pipe in pieces ... is it gonna bolt up or what ...

If it is the jet-hot long tube header y-pipe then it will bolt up. If it is a stock y-pipe, it will not.

i did a search the AIR fitting is different and the 97 has rear o2 sensors...which isn't a problem because the rear o2s are turned off on my car

If they are the "race" headers, it won't be an issue considering they won't have the AIR and EGR fittings.

I just got an ORY pipe for my 97.

BTW, how did you turn off your rear o2 sensers ?

The rear sensors have to be eliminated in the PCM programming. Or replace them with "sims", if anyone is still making them.

If they are the "race" headers, it won't be an issue considering they won't have the AIR and EGR fittings.
they aren't race headers they are emmisions legal

I just got an ORY pipe for my 97.

BTW, how did you turn off your rear o2 sensers ?

we turned them off when i got it dyno-tuned...

96-97 cars have different AIR fittings than previous years. And if you're going with an ORY and already had the rear O2s deleted, then y-pipe doesn't matter, as long as it bolts up to your catback.

The rear sensors have to be eliminated in the PCM programming. Or replace them with "sims", if anyone is still making them.

They are alot harder to find, although I know of a couple of vendors in which I purchased a couple sets from to keep on hand. If you are interested in the links for your own personal reference, I can PM you them.