What is the diameter of the stock exhaust downpipe and tube for a '96 7.3?

 

That would be hard to say, seeing that it isn't round... It is a flat pancake type pipe that doesn't flow worth a hoot, I'll see if I can dig up a picture.

 

Doh!

Much appreciated...

Reason being is I have a muffler that a guy with a 96 7.3 wants to buy and him and I were talking about just doing the whole exhaust system but he didnt know what was in there already (stock)

Come to think, he did say he put a 3" down pipe in. Does that sound right for the exhaust system he would have stock?

Also, he asked about something just before the muffler on the exhaust. I guessed it was a resonator. Is that correct?

 

Its a cat. Do the whole exhaust. Check the dpwnpipe that it is 3" all the way

 

Here:

You cansee it a little near the firewall.

The thing in front of the muffler is a catalytic converter, all OBS trucks had them, while most SD trucks don't. Most guys gut them or delete them, same difference A 3" DP is what most guys run. It is also all that you can fit without a body lift, or some other firewall modification.

 

Interesting. I didnt think the older trucks had a Cat. Hmm.. Good to know about the dp too. Thanks!

 

iirc i wanna say the stock system...after downpipe, was 3.5 inches....

 

My guess was 3.25" idk why but that sounded right to me

 

3.5" on the stock system from the cat back.

And yes, all 94-97 Stroker's had cats. Just a few of the SD's have them.

 

X2 on that. And the aftermarket DP could be 3" all the way, or 3 to 3 1/2" or 3 to 4".

I add a pic of a stock DP and one of 3 to 3.5" with one of 3 to 4"

 

And here is one of the stock and the 3 to 3"