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jwboner · 01-17-2008, 10:53 PM

I've got a 347 ci with Trick Flow stage 3 cam and TF Track Heat heads with 10:1 comp ratio. And Accel DFI on top.
I had a custom exhaust fab'd up by a shop out of 2.5" from the Hooker Super Comp back that incorporates an H-pipe. Over time the lowest part has been flattened out some by low ground clearance.
I'm now thinking of replacing it with Pypes universal X-pipe with cutouts kit. But I don't know if I will see much advantage of using 3" pipe.
Has anybody switched from 2.5 to 3" and have any stories that they would like to share?

John

01-17-2008, 10:53 PM	#1
jwboner Registered Member Join Date: Jun 2001 Location: Under the hood Posts: 164	Upgrade to 3" exhaust worth it? I've got a 347 ci with Trick Flow stage 3 cam and TF Track Heat heads with 10:1 comp ratio. And Accel DFI on top. I had a custom exhaust fab'd up by a shop out of 2.5" from the Hooker Super Comp back that incorporates an H-pipe. Over time the lowest part has been flattened out some by low ground clearance. I'm now thinking of replacing it with Pypes universal X-pipe with cutouts kit. But I don't know if I will see much advantage of using 3" pipe. Has anybody switched from 2.5 to 3" and have any stories that they would like to share? John __________________ 65 fastback 347 DFI injected w/vic jr, TFS heads, MSD, cable clutch TKO, 3.70 9", tc subframe conns, custom traction bars, griffen alum radiator, armored fuel cell, and torq thrust D's Retrofitted Prelude seats. Vintage Air underdash kit. Fiberglass here and there too More on the way all the time.