3" Duals

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Jan 2, 2009 | 09:02 PM

regency

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From: Alexandria, LA

3" Duals

I am making alot of changes to the truck right now and exhaust is one of them. I did some porting on a set of 243's i had laying around and milled them .010, also using some .040 cometics. I made the heads look as close as i could to a set of Patriot stg.2 LS6's i took some pics of.
I also have the 228R-112, Fast 90 mildly ported/LS2 TB, Underdrive Pulley, CAI, Pacesetter LT's

My exhaust at the moment consists of just comming off the headers (3" collector) with a 2.5" SBC collector reducer, back into a 2.5" dual in/dual out Magnaflow with built in X and regency tips welded to the muffler. Im thinking of going with 3" duals with x-pipe into the same muffler/tips combo!

Jan 3, 2009 | 08:18 AM

Pharcyde50

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From: St. Petersburg, FL

Running 3" duals here and love the sound. I'm getting ready to do a 3" true dual setup on my neighbors 2500 GMC.

Jan 4, 2009 | 10:15 AM

regency

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anyone with experience with both 2.5" and 3" on the same setup

Jan 4, 2009 | 11:15 AM

teke184

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with your mild setup, i can't imagine you'd gain much.

sound could change if you use different mufflers, but i can't see power changing significantly

Jan 4, 2009 | 01:11 PM

regency

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well im not too worried about the sound changing. I would just like to maximize my current setup

Jan 4, 2009 | 05:27 PM

teke184

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dual 2.5" pipes should handle the 450hp you're making at the crank....

i suppose its possible you would gain 2-3hp with 3" pipes....but is it really worth that much hassle?