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ECU PIRATE · 12-12-2010, 05:02 PM

Since I finally managed to get the headers I was looking for, now is the time to start planning my exhaust. I am going to do a custom one off and build it myself. Since the state of Va. is requiring me to run cats on my truck since it is post 73', I am going to be running dual 2.5" id/od spun cats and 2.5" id/od mufflers.

Still deciding on whether to use glass packs or pony up and get some Flowmasters. My question is this: What size pipe should I use? 2.25" , 2.5" or 3"? My headers (Hedman HTC # 68316) have 3" collectors with reducers. I am just looking for something that will slip fit so I can weld it up.

The Pirate

12-12-2010, 05:02 PM	#1
ECU PIRATE Registered User Join Date: Apr 2009 Location: Centreville, Virginia Posts: 846	Exhaust recommendations Since I finally managed to get the headers I was looking for, now is the time to start planning my exhaust. I am going to do a custom one off and build it myself. Since the state of Va. is requiring me to run cats on my truck since it is post 73', I am going to be running dual 2.5" id/od spun cats and 2.5" id/od mufflers. Still deciding on whether to use glass packs or pony up and get some Flowmasters. My question is this: What size pipe should I use? 2.25" , 2.5" or 3"? My headers (Hedman HTC # 68316) have 3" collectors with reducers. I am just looking for something that will slip fit so I can weld it up. The Pirate __________________ The Fleet........ 68' Camaro - 1st car (restored & still have it) 09' VW Tiguan (Wife's Daily Driver) 14' VW Passat SE TSI (my personal) 14' Ford Edge Sport (Daily Work Vehicle) 73' SWB Stepside - 77K org. miles 74' LWB 454/TH400 - drive train transplant for my (Sold) 98' SWB C1500 W/T - shop truck (Sold) 90' GMC Sierra SLE short step - aka " Jezabelle " (Sold)