SBC header tube diameter
Im sure this question has been asked before, but ill ask anyhow!!
I have a 400 sbc punched out .040'' making it a 408, I am supercharging it to- estimated 6-8 psi.
After the header collector will be 3'' pipe leading to X pipe with 3'' cut outs. after the x it will drop to dual 2.25'' pipes out the rear.
I understand with cutouts closed im limited to the 2.25'' pipe, but will i benefit from larger headers when factoring 3'' cutouts?