I have a 94 4.3 vortec 4x4. I need a new catback because my old one is rusted beyond recognition and the previous owner welded a flowmaster muffler in so that when I turn it hits the driveshaft.
I was looking into the dynomax catback system with the 2.5 in pipes.
I also want to get a magnaflow cat because my old one is the original and I'm pretty sure I ruined it when my spider decided that the fpr wanted to explode.
The direct fit cat says that it's a 2.5 inlet and 3 out.
Will this setup work? Or if not what can I do to make it work?

Thanks,
Melissa

 

What is the number on the direct fit cat? It should be 2.5 in/out.

 

The part number is 93485

I found the specs on it here:
http://www.summitracing.com/parts/MPE-93485/

 

Looks like a bad description.

From car-sound.com who makes the catalytic converters for Magnaflow, it shows as a 3" ball flange on the front and a 2-1/2" ID outlet.

 

I've looked at a few other sites that say the 2 1/2" is the inlet and the 3" is the outlet. I'm confused.

 

The image I posted came directly off of the car-sound website. Since they make the cat you are looking at, I would trust that information over anything else.

 

Well will this work with the dynomax system?

 

To update, I bought the magnaflow cat and the dynomax system and put it on last Saturday. Everything went pretty smoothly and it sounds great! It was time for a new system anyway because the tailpipe fell off on Friday. Once I got the original cat off you could hear all kinds of things rattling around in there. Thanks everyone.

 

I have the same magnaflow too and love it, you can usually get a used one on ebay or cragislist. I wanted a valid warranty so I got it here. Magnaflow 93485. Also some of the forum sponsors selling magnaflow usually have a sale going on. Either way its a great cat, sounds great, and very easy to install.

 

Its is against federal law to sell a used cat converter. Just so you know, Its against ebay rules also.