Use shim kits to properly align pulleys. Crank pulley spacers are for small block Chevys. Kits include three shims.
Allstar Performance All48253 Pulley For All48252
Allstar Performance 31050 | Water Pump Pulley 6.625in Dia 3/4in Pilot
Allstar Performance 31066 Crankshaft Pulley Shim Kit IMCA Dirt Track
Allstar Performance ALL31030 Crankshaft Pulley - V-Belt - 2-Groove - 4.750in
Allstar Performance All31050 Water Pump Pulley 6 625In Dia 3 4In Fits For
Allstar Performance 28 TOOTH GILMER STYLE OIL PUMP PULLEY 26420