To Calculate the maximum speed of your Supercharger:
Maximum Impeller / Rotor Speeds
Vortech V-3 Sealed Unit (CAPA Oil System) - 50,000rpm
Vortech V-3 Oil Feed & Drain w/ Air Assist - 58,000rpm
Vortech V-7 JT Oil Feed & Drain w/ Air Assist - 60,000rpm
Vortech V-7 YSi Oil Feed & Drain w/ Air Assist - 65,000rpm
Powerdyne BD-11A - 38,000rpm
Eaton Supercharger - 18,000rpm
Ratios
Vortech w/ Helical Cut Gearbox (eg V-2, V-3) - 3.6:1
Vortech w/ Straight Cut Gearbox (eg V-1, V-7, V-13, V-15) - 3.45:1
Vortech w/ Heritage Gearbox (eg V-3 Heritage Series) – 3.5:1
Vortech V-20 and V-30 - 4.21:1
Paxton Novi w/ Helical Cut Gearbox (1220 / 1200 /1500 / 2200SL) – 3.6:1
Paxton Novi w/ Straight Cut Gearbox (eg 2200R / 2200X) – 3.45:1
Paxton Novi Legacy (eg 1000 / 2000) - 3.5:1
Powerdyne BD-11A - 3.05:1
Eaton Supercharger (No Overdrive) - 1:1
Magnuson TVS Gilmer Rear Overdrive (3.5"/3.0") - 1.167:1
Magnuson TVS Gilmer Rear Underdrive (3.5"/3.0") - 0.857:1
CAPA Magnuson TVS Gilmer Rear Overdrive (36T/30T) - 1.2:1
CAPA Magnuson TVS Gilmer Rear Underdrive (30T/36T) - 0.833:1
CAPA Crank Pulleys
CAPA Universal 8-Rib Crank Pulleys 205mm - 8.07"
CAPA Universal Gilmer Crank Pulleys - 78T
CAPA Holden 6cyl – 7.01”
CAPA VN-VS 5.0L 205mm - 8.07"
CAPA VT 5.0L 205mm (Sold 2020 On) - 8.07"
CAPA VT 5.0L 180mm (Sold Pre-2020) - 7.09"
CAPA Landcruiser 4.5L 6cyl – 7.01”
OEM Balancers
VT-VZ LS V8 Factory - 7.52"
VE-VF LS V8 Factory - 7.52"
LSA Factory S/C Drive - 7.87"
VZ V6 No Keyway – 6.77”
VZ V6 w/ Keyway – 6.34”
VE-VF V6 – 6.34”
VS-VY V6 – 7.07”
BA-FG 5.4L V8 – 7.05”
BA-FG 6cyl – 6.85”
Romac Balancers
VT-VZ LS V8 – 7.48”
VT-VZ LS V8 10% OD – 8.23”
VE-VF LS V8 – 7.48”
VE-VF LS V8 10% OD – 8.23”
LSA 7.5% OD – 8.58”
LSA 13.75% OD – 9.09”
LSA 19% OD – 9.57”
Dayco Balancers
VT-VZ LS V8 OEM / Street / Race – 7.52”
VT-VZ LS V8 Race 10% OD – 8.23”
VE-VF LS V8 OEM – 7.52”
VE-VF LS V8 Race – 7.5”
VE-VF LS V8 Race 10% OD – 8.23”
LSA Std Diameter – 7.99”
LSA 5% OD – 8.39”
LSA 10% OD – 8.78”
LSA 18% OD – 9.37”
LSA 22% OD – 9.72”
LSA 28% OD – 10.12”
BA-FG 5.4L V8 OEM – 7.05”
BA-FG 5.4L V8 Race – 7.01”
BA-FG 6cyl OEM & Race – 6.85”
Notes:
For LS-1 8-Rib Power Steer Drive Kits, enter the Crank Pulley Diameter, NOT the Power Steer Pulley Diameter.
For LS-1 Gilmer Power Steer Drive Kits, please use the Gilmer Power Steer Calculator (Link).