Upgrade to 3" exhaust worth it?

[Dark_5.0]

Originally Posted by jwboner

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

Nice set-up. I have ran 3 inch exhaust and it didnt run any better or worse than the 2 1/2 exhaust I had. My motor was a punk compared to yours, I would say your motor may benifit from 3 inch exhaust. i would also run 1 3/4 long tubes with it.