what exhaust is 3" and dual?
#5
You're going to have to build that one or find someone that can for you.
Just for info sake, a "perfect" flowing 3" pipe will flow right around 865 cfm at 28" H2O pressure. In naturally aspirated form that is good for around 570 hp or so on a piston engine but due to the rotaries efficiency differences still good to around 460 hp or so. Remember this isn't with a turbo. It is naturally aspirated. Having one pipe of 3" splitting into 2 isn't a flow advantage after the split. Even dual 2.25" pipes after the Y will still outflow the single 3" before it.
Are you trying to do a true dual 3" for a V8 conversion? Why do you need a dual 3"?
Just for info sake, a "perfect" flowing 3" pipe will flow right around 865 cfm at 28" H2O pressure. In naturally aspirated form that is good for around 570 hp or so on a piston engine but due to the rotaries efficiency differences still good to around 460 hp or so. Remember this isn't with a turbo. It is naturally aspirated. Having one pipe of 3" splitting into 2 isn't a flow advantage after the split. Even dual 2.25" pipes after the Y will still outflow the single 3" before it.
Are you trying to do a true dual 3" for a V8 conversion? Why do you need a dual 3"?