I was just wondering what size my stock exhaust pipes on my 93 z28 are going from the muffler to the rear. Are they 2.5" or 2.25"?

 

someone out there must know, anyone??

 

2.75

 

the pipe coming from the cat to the muffler i know is 2.75. I'm wondering about the dual pipes going from the muffler to the tips.

 

I never measured the back pipes to the tips at home, but measured the cat to muffler pipe. Maybe it is different towards the back of the car, but right under the passenger i got a 3" outside diameter, which would probably make the pipe a 2.75" diameter there.

 

The intermediate pipe is 2 3/4, and the part where it enters the muffler is 2 1/2, the tail pipes are 2 1/4.

 

I think that is correct $hawn, i just had my magnaflow installed and we measured it out to be able those figures.

 

Def 2.75

 

$hawn is correct. The tailpipes are 2 1/4