Hurricane 5455-660 Turbo Supercore Hurricane 5455-660 is a top-of-the-line ball-bearing turbo, perfect for 2.0-3,5 liter engines with up to 660 horsepower on gasoline. Suitable for all types of racing and custom builds. Hurricane 5455-660 Supercore suits 2,0 to 3,5-liter engines and produces 350-660hp on Gasoline, -720hp on Ethanol and -450hp on Diesel. Smaller engines (2,0-2,8L) will get fast spool times with the 55mm turbine, while bigger engines (2,8-3,5L) will get even faster spool times. Turbine housing. The above-spool times can be adjusted with the turbine housing size, where a smaller one (A/R 0,83) improves the spool further, and a bigger one (A/R 1,21) increases peak power. Compressor A/R 0.70 54.34/67.4mm Speed sensor outlet. Clamp type : 6-Bolt clamp kit (included) Anti-surge : Yes Speed sensor port : Yes Vacuum port : 1/8 -27 NPT Inlet hose diameter: 3" / 76mm Outlet hose diameter:  2" / 51mm CHRA Bearing: Dual ceramic ball bearings Oil inlet : Special thread for ball bear