Professionally detailed Berkley SS impeller. BC cut based on my measurements (8 5/8 large dia., 6 5/8 small dia.). Detailing brings its performance closer to straight up B (chart says B@4800 RPM takes 350 HP). My stock, low HP 454 turned it 4800 RPM at 60 MPH. My built 481 turns it 6000 RPM at over 70 MPH (18 ft Southwind). I ordered an A cut to drop my RPMs. A medium built 454 should spin it about 5200 RPM. Comes with matching bronze wear ring. New SS impeller costs about $1500, detailing is probably about $300, bronze wear ring is $350. The price for this is less than half. This is ready for installation for worry free performance in your boat.
