exhaust pipe sizes

Kamaro Killer · 04-20-2002, 02:11 AM

I have a set of Flowmaster mufflers (I'm not sure which style) and I'm pretty sure they are 2 1/2" mufflers. The H-pipe I have is 2 1/4" and I have the stock headers on it. When I purchased the car, it didn't have tailpipes, so now I have to buy some to pass smog. Should I go with the 2 1/2" tailpipes or the 2 1/4" tailpipes? Thanks, Keith

egiap's 5.0 · 04-20-2002, 07:43 AM

Measure the outlet side of muffler. If its 2 1/4'' or 2 1/2 '' then get that same size tale pipe. This measerment will be the inside diam. of the outlet side of muffler. Hope this helps.

ultraflo · 04-20-2002, 10:45 PM

I would run the 2.5" tailpipes, if you're doing the install yourself you can take the mufflers and tailpipes to a muffler shop and have the outlet of the muffler expanded to fit the tailpipe; otherwise, you can just have them do the install for you.

Keep that in mind...

Later

04-20-2002, 02:11 AM	#1
Kamaro Killer Mustang Enthusiast Join Date: Mar 2002 Posts: 528	exhaust pipe sizes I have a set of Flowmaster mufflers (I'm not sure which style) and I'm pretty sure they are 2 1/2" mufflers. The H-pipe I have is 2 1/4" and I have the stock headers on it. When I purchased the car, it didn't have tailpipes, so now I have to buy some to pass smog. Should I go with the 2 1/2" tailpipes or the 2 1/4" tailpipes? Thanks, Keith __________________ 1993 GT 5.0-My Stang Rice Hater's Club Member 22

04-20-2002, 07:43 AM	#2
egiap's 5.0 Registered Member Join Date: Apr 2001 Location: Mansfield, OH. Posts: 113	Measure the outlet side of muffler. If its 2 1/4'' or 2 1/2 '' then get that same size tale pipe. This measerment will be the inside diam. of the outlet side of muffler. Hope this helps. __________________ Amsoil, The finest in synthetics T-1 certified Amsoil dealer Oils,Lubes,Filters www.lubedealer.com/midohio

04-20-2002, 10:45 PM	#3
ultraflo NX dealer-man Join Date: Sep 1998 Location: Peoria, Illinois Posts: 977	I would run the 2.5" tailpipes, if you're doing the install yourself you can take the mufflers and tailpipes to a muffler shop and have the outlet of the muffler expanded to fit the tailpipe; otherwise, you can just have them do the install for you. Keep that in mind... Later __________________ RLS Racing! 93 LX 9.20 @ 147mph 03 Mach 1 12.39 @ 116mph

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