Flowmaster exhaust?

67mustangconvert · August 24th, 2008, 01:16 PM

What size pipes are most of you running with your dual flowmaster 40's with headers? I have a 67 that I'm trying to find out do I need a 2", 2.25", 2.5", or 3"?

MustangOne · August 24th, 2008, 04:10 PM

on my 427 im running 2.5 40's out the back.

on any my little motors 289/302 im running 2"

If you use 3" you need to have a damn good exhuast guy if you are going out the back

69fastback · August 24th, 2008, 07:39 PM

Also, using larger exhaust can cause you to loose a lot of low end torque on a low compression egine, which takes away from the driveability on the street. I never use larger than 2.5".

460brevill · August 24th, 2008, 09:52 PM

2 1\2 all the way out,with 3 1\2 tips.

August 24th, 2008, 01:16 PM	#1
67mustangconvert Newbie Join Date: Jul 2007 Posts: 17 iTrader: 0 reviews	Flowmaster exhaust? What size pipes are most of you running with your dual flowmaster 40's with headers? I have a 67 that I'm trying to find out do I need a 2", 2.25", 2.5", or 3"?

August 24th, 2008, 04:10 PM	#2
MustangOne Lost in the 60's 1968 GT 500 Super Snake 12.6 @ 114.3 Join Date: Mar 2008 Location: Sapulpa Oklahoma Posts: 2,052 iTrader: 0 reviews	on my 427 im running 2.5 40's out the back. on any my little motors 289/302 im running 2" If you use 3" you need to have a damn good exhuast guy if you are going out the back __________________ MustangOne's Car's How to post Photos in Your Thread. Vote for your Favorite Ride of the month, Every Month Modded Mustangs Facebook

August 24th, 2008, 07:39 PM	#3
69fastback Premium Member 1969 Mustang Mach 1 6.824@101.61 Join Date: Aug 2006 Location: Oklahoma jackass, get to driving Posts: 5,570 iTrader: 0 reviews	Also, using larger exhaust can cause you to loose a lot of low end torque on a low compression egine, which takes away from the driveability on the street. I never use larger than 2.5". __________________ ./___ _ ____ ___ \. ( ]]] _ _ O _ _ [[[ ) \_ o _ _____ _ o _/ \|___\| ......... \|___\| http://www.youtube.com/watch?v=HyYU3...e_gdata_player

August 24th, 2008, 09:52 PM	#4
460brevill Hardcore Enthusiast Join Date: Apr 2007 Location: Farmville VA Posts: 1,327 iTrader: 0 reviews	2 1\2 all the way out,with 3 1\2 tips. __________________ i sixing 200 six with 300 hp.

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