well... I've decided to ditch the sweptside setup and go for flowmaster40 duals (s/i d/o) and I was wondering what size is best for the piping?
I was reading somewhere the 2 1/2 in and 2 1/4 out is the best to keep torque #'s and still have good flow..

what was the concensus? any opinions?


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97 F150 XLT: Two-Tone Green and Tan, V6 4.2L Auto Trans 4X4, 3.55 gears, 265/75/16 Dueler AT's, Edelbrock Performer IAS Shocks
MODS:Airaid FIPK, Superchip, Ravin Z55 Exhaust SI/SO
GOODIES:Kameleon Head Unit w/12 disk cd changer, JVC 4ch 560watt poweramp, Bazooka Tube, Boston Acoustic 5x9's, Tinted Back, Westin Nerf Bars..

 

patrickjp,
What made you decide to switch from the Gibson sweptside to the Flowmaster set-up? Just curious.

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* 2000 F150XLT SC/SB 4X4 Sport Black on Black
* 5.4L,3.55LS,4R70,17in wheels
* Air Force1 FIPK
* Alarm w/remote starter

 

sweptside is stock with the 4.2 1997 models..

and I have replaced it with ravin Z55

 

A lot of people mistakingly call a single exhaust exiting out the side like the stock exhaust, a "sweptside". Gibson has a system called Sweptside. I've also heard people refer to it as "side swept".

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2000 EDDIE BAUER EXPEDITION 4x2

• Estate Green
• 5.4 ltr
• 3:55 LS rear
• Superchip!
• Airaid FIPK
• Gibson S/S Swept Side Cat Back Exhaust
• Hellwig Rear Anti-Sway Bar
• Energy Suspension Polyurethane Front Anti-Sway Bar Bushings
• Edelbrock Performer IAS Shocks
• Mobil 1
• Xenon Super White Head and Driving Lights
• Tow Package
• Rear Load Leveling
• Moonroof
• Century Child Seat!

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