I am building a 347 with AFR 185 heads and a Novi2000 pushing 15#'s of boost. I got a good deal on 1 3/4 long tubes and a 3" pro chamber. I will be running 3" exhaust all the way back. My question is will this be to much flow for my setup?
It will be perfect for your combo I have a custom 3" H from the headers back on my N/A 347 11:25:1 stroker and it's real mello at idle... but when you goose it man does it freakin' scream!!! I love it....very Stealth if you can tuck it underneath good....have fun
There is no such thing as too much exhaust (including open headers) there is a mismatch between cam and exhaust . When the car is built with free flowing exhaust, and a decent intake to exhaust bias to the heads, then the cam doesn't have to have the super huge "ford" crutch duration as standard on most ford box cams.
With those long duration exhaust cycles all you do is bleed cylinder pressure.
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