Originally Posted by jpshepley
bigger blower means cooler air at the top end but they can leak alot down low, loosing bottom end.
Theres no point having a 14-71 if its only good for a 2000 rpm rev range?
Please correct me if I am wrong I'm no expert on blowers (or anything really).
Josh
If they leak at the bottom, they'll leak at the top.
A street blower is going to leak like a hole in an aorta no matter what. They simply don't have tight tolerances...If they did, when they heated up the rotors would seize against the case.
If the motor is going to be dual carbed, get two big ass dominators, and a 14-71 with 15" top/bottom openings.
If it's going to be EFI, get a 9.5" opening top and whatever size bottom. The smaller the top opening the quicker it makes boost. Run dual fuel above and below the blower. Feed just enough through the top to keep the blower cool, and use the lower injectors to control EGT balance for each cylinder.