NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post - Stock y-pipe???

JL8Jeff · 12-20-2011, 05:46 PM

The stock I-pipe that connects to the y-pipe is 2-3/4". Most catbacks actually have a stepdown from 3" to the 2-3/4 to connect to the stock y-pipe. I think each side of the y-pipe is 2-1/4" but the driver's side is flattened as you can probably tell. I think Borla makes a 2-1/2" round stock y-pipe replacement. I had one on my 2000 SS until I upgraded to headers.

12-20-2011, 05:46 PM	#2
JL8Jeff Hippy Mod, Bergermeister Meisterberger, Moderator Join Date: Aug 2004 Location: Ewing Posts: 6,216 iTrader: (3)	The stock I-pipe that connects to the y-pipe is 2-3/4". Most catbacks actually have a stepdown from 3" to the 2-3/4 to connect to the stock y-pipe. I think each side of the y-pipe is 2-1/4" but the driver's side is flattened as you can probably tell. I think Borla makes a 2-1/2" round stock y-pipe replacement. I had one on my 2000 SS until I upgraded to headers. __________________ 69 Z28 JL8 4 wheel disc brakes - being restored 09 Silverado Z71